The document provides an overview of the technical features of Oracle8i Recovery Manager. Key features discussed include proxy copy which allows backups to be offloaded from the Oracle host to a media manager, disk affinity which improves backup performance, enhanced LIST and multiplexed backup set commands, automatic catalog maintenance, and point-in-time recovery of individual tablespaces to improve data availability. The Recovery Manager aims to provide improved ease of backup/recovery administration while maintaining high performance and database availability.
This document provides instructions for installing and configuring Oracle BI Applications 11.1.1.7.1 using data from an Oracle E-Business Suite 12.1.3 database. It outlines prerequisites for the Linux OS, installing the Oracle database, downloading installation files, installing RCU for OBIEE, OBIEE, ODI, RCU for BI Apps, BI Apps, patches, configuring BI Apps, patching WebLogic, installing client tools, configuring ODI security and plan generator files, applying ATG patch, configuring tools, configuring a data load, configuring a new instance, configuring the source system, selecting an offering, managing load plans, configuring a specific offering and running a
This document provides an overview of managing the Oracle database instance. It covers starting and stopping the Oracle database and components using Oracle Enterprise Manager and SQL*Plus. It describes accessing databases with SQL*Plus and modifying initialization parameters. It also discusses the stages of database startup, shutdown options, viewing the alert log, and accessing dynamic performance views.
The document discusses managing an Oracle database instance. It covers:
1. Starting and stopping the Oracle database and components like Database Control using commands like emctl and sqlplus.
2. Using tools like SQL*Plus, Enterprise Manager, and dynamic performance views to access and modify initialization parameters, view alert logs, and manage the database.
3. The stages of database startup including nomount, mount, and open and database shutdown options like normal, transactional, and immediate.
This document provides interview questions for an experienced 3+ year Oracle DBA divided into 5 sections with increasing difficulty. The sections cover basic Oracle knowledge, moderate daily tasks, advanced topics, RAC-specific questions, and very specialized questions. Example questions address topics like Oracle documentation resources, database startup/shutdown modes, data dictionary views, and RAC components. Separate documents further describe common DBA tasks and default Oracle passwords.
- Oracle Flex ASM is a new feature in Oracle Database 12c that changes the architecture of the ASM cluster. Previously, an ASM instance ran on every server in the cluster, but with Flex ASM only a smaller number (the ASM cardinality) need run on a subset of servers. If an ASM instance fails, a replacement will start on a different server to maintain the cardinality. Database instances can also reconnect to surviving ASM instances. Flex ASM provides capabilities needed for cloud computing and allows database clusters to rapidly adapt to changing workloads with minimal management.
What is new on 12c for Backup and Recovery? PresentationFrancisco Alvarez
Francisco Munoz Alvarez is an Oracle ACE Director and president of several Oracle user groups. He has many Oracle certifications and experience beta testing various Oracle products.
The presentation covers new features in Oracle Database 12c for backup and recovery including the multitenant container database, enhancements to RMAN and Data Pump, and changes to privileges for backups. It also discusses pluggable databases, container and PDB backup/restore, multisection backups, active duplicate, and SQL usage in RMAN.
The document discusses several key data warehousing features in Oracle, including:
1) The SQL Access Adviser which recommends indexes and materialized views for workloads.
2) Improvements to the multidimensional OLAP engine including advanced partitioning options.
3) Data Pump which replaces Import and Export utilities and is faster for exporting and importing data.
4) Automatic storage management which automates storage management tasks.
This document provides instructions for installing and configuring Oracle BI Applications 11.1.1.7.1 using data from an Oracle E-Business Suite 12.1.3 database. It outlines prerequisites for the Linux OS, installing the Oracle database, downloading installation files, installing RCU for OBIEE, OBIEE, ODI, RCU for BI Apps, BI Apps, patches, configuring BI Apps, patching WebLogic, installing client tools, configuring ODI security and plan generator files, applying ATG patch, configuring tools, configuring a data load, configuring a new instance, configuring the source system, selecting an offering, managing load plans, configuring a specific offering and running a
This document provides an overview of managing the Oracle database instance. It covers starting and stopping the Oracle database and components using Oracle Enterprise Manager and SQL*Plus. It describes accessing databases with SQL*Plus and modifying initialization parameters. It also discusses the stages of database startup, shutdown options, viewing the alert log, and accessing dynamic performance views.
The document discusses managing an Oracle database instance. It covers:
1. Starting and stopping the Oracle database and components like Database Control using commands like emctl and sqlplus.
2. Using tools like SQL*Plus, Enterprise Manager, and dynamic performance views to access and modify initialization parameters, view alert logs, and manage the database.
3. The stages of database startup including nomount, mount, and open and database shutdown options like normal, transactional, and immediate.
This document provides interview questions for an experienced 3+ year Oracle DBA divided into 5 sections with increasing difficulty. The sections cover basic Oracle knowledge, moderate daily tasks, advanced topics, RAC-specific questions, and very specialized questions. Example questions address topics like Oracle documentation resources, database startup/shutdown modes, data dictionary views, and RAC components. Separate documents further describe common DBA tasks and default Oracle passwords.
- Oracle Flex ASM is a new feature in Oracle Database 12c that changes the architecture of the ASM cluster. Previously, an ASM instance ran on every server in the cluster, but with Flex ASM only a smaller number (the ASM cardinality) need run on a subset of servers. If an ASM instance fails, a replacement will start on a different server to maintain the cardinality. Database instances can also reconnect to surviving ASM instances. Flex ASM provides capabilities needed for cloud computing and allows database clusters to rapidly adapt to changing workloads with minimal management.
What is new on 12c for Backup and Recovery? PresentationFrancisco Alvarez
Francisco Munoz Alvarez is an Oracle ACE Director and president of several Oracle user groups. He has many Oracle certifications and experience beta testing various Oracle products.
The presentation covers new features in Oracle Database 12c for backup and recovery including the multitenant container database, enhancements to RMAN and Data Pump, and changes to privileges for backups. It also discusses pluggable databases, container and PDB backup/restore, multisection backups, active duplicate, and SQL usage in RMAN.
The document discusses several key data warehousing features in Oracle, including:
1) The SQL Access Adviser which recommends indexes and materialized views for workloads.
2) Improvements to the multidimensional OLAP engine including advanced partitioning options.
3) Data Pump which replaces Import and Export utilities and is faster for exporting and importing data.
4) Automatic storage management which automates storage management tasks.
This document discusses Oracle database backup and recovery. It covers the need for backups, different types of backups including full, incremental, physical and logical. It describes user-managed backups and RMAN-managed backups. For recovery, it discusses restoring from backups and applying redo logs to recover the database to a point in time. Flashback recovery is also mentioned.
The document provides a set of interview questions for an Oracle DBA role. It includes questions about database backups, restoring from backup, database initialization parameters, database object storage structures like data blocks and extents, table structures, database performance monitoring and tuning, database security, database utilities, and basic UNIX commands. The questions cover a wide range of topics that a junior or mid-level Oracle DBA should be familiar with.
This document provides an overview of Oracle database concepts and tools. It describes the core components of an Oracle database including the database, server processes, memory structures, and client/server architecture. It also outlines the tools used to configure an Oracle database such as the Oracle Universal Installer, Database Configuration Assistant, and command line utilities. Automatic Storage Management (ASM) is discussed as the preferred storage management solution.
This document discusses database backup strategies and solutions. It covers creating consistent backups, backing up without shutting down the database, incremental backups, automating backups, managing backups and reports, and monitoring the fast recovery area using Recovery Manager (RMAN) and Oracle Secure Backup. Key terms like backup types and modes are also defined.
The document provides an overview of the Oracle DBA course, including its objectives to identify the various components of the Oracle architecture and learn how to perform tasks like starting and shutting down a database. It then describes the key components of the Oracle architecture, including the Oracle database (physical files), Oracle instance (memory structures and processes), System Global Area (SGA) used to store shared database information, and database buffer cache which stores recently used data blocks retrieved from data files.
This document provides definitions and explanations of various Oracle database concepts and components. It defines terms like log switch, online redo log, archived redo log, database startup process, instance recovery, full backup restrictions, mounting modes, ARCHIVELOG mode advantages, database shutdown process, restricted instance startup, partial backup, mirrored redo log, and control file usage. It also answers questions on topics like views, tablespaces, schemas, segments, clusters, integrity constraints, indexes, extents, synonyms, and transactions.
DAC Notes. We provide best training and placement in Data warehousing and big data analytics . Mainily we offer training on
1) OBIEE
2)ODI
3)OBIA
4)INFORMATICA
5)HADOOP
The document provides an overview of data collection in the Courion Identity Mapping Solution. It discusses installing the required components, including Active Directory collector, configuring data collection rules and data feeds, and checking the SQL Server job agent. The data collection process extracts, transforms and loads account, identity and entitlement data from target systems into Courion using built-in collectors. It also outlines the data flow and job flow, and provides instructions on installing requirements such as certificates and connectors. Screenshots demonstrate how to install collectors, create data collection rules, view results and schedule jobs.
Oracle dba interview questions with answerupenpriti
This document contains 10 questions about Oracle DBA interview questions and their answers. It covers topics like components of the SGA, the order in which Oracle processes SQL statements, mandatory datafiles for an Oracle 11g database, and how sessions communicate with the database. The questions test knowledge of Oracle architecture, processes, memory structures, and common administrative tasks.
The document discusses several new features in Oracle Database 11g for management enhancements including:
1) Change capture and replay capabilities to setup test environments and perform online application upgrades.
2) Snapshot standbys for test environments that allow testing and discarding of writes without impacting the primary database.
3) Database replay to capture and replay workloads in pre-and post-change systems to analyze for errors or performance issues.
4) Several new capabilities for online patching, upgrades, and automatic diagnostic workflows.
This document provides a list of interview questions for an Oracle DBA with 3+ years of experience. It covers basic, moderate, advanced, and master level questions. The basic section includes questions about default passwords, connecting to Oracle, and using clients like SQL*Plus. The moderate section covers topics like PFILE vs SPFILE and Data Pump. The advanced section includes questions about background processes, views, and shutdown modes. The master section contains very specific questions even an experienced DBA may struggle with.
This document contains interview questions about Oracle database concepts and architecture. It covers physical and logical database structures, tablespaces, schemas, schema objects like tables, views, indexes, and sequences. It also discusses database administration topics like instances, parallel servers, memory structures like the system global area and program global area, and space allocation and management using rollback segments and tablespaces.
This document discusses configuring the Oracle Network environment. It covers using Enterprise Manager to create listeners and aliases, configure failover, and control the listener. It also discusses using tnsping to test connectivity and when to use shared vs dedicated servers. Tools covered include Enterprise Manager, Oracle Net Manager, lsnrctl, and SQL commands for configuring database links.
Oracle Recovery Manager (Oracle RMAN) has evolved since being released in version 8i. With the newest version of Oracle 12c , RMAN has great new features that will allow you to reduce your down time in case of a disaster. In this session you will learn about the new features that were introduced in Oracle 12c and how can you take advantage of them from the first day you upgrade to this version.
The document summarizes features and capabilities of Oracle Database including:
- Support for structured and unstructured data types including images, XML, and multimedia.
- Tools for managing growth of data and enabling innovation with different data types.
- Self-managing capabilities that help liberate DBAs from resource management tasks.
- Features for high performance, availability, security and compliance at lower costs.
Oracle Database 12c introduces a new multitenant architecture that allows multiple pluggable databases to run within a single consolidated container database. This simplifies database consolidation, lowering costs by reducing the hardware, software, and staffing required for management and administration. Resources like CPU, memory and processes are managed at the container level, improving utilization rates. Databases can also be provisioned, backed up, patched, and upgraded more efficiently within this shared architecture.
The document discusses database backup and recovery strategies in Oracle. It covers the different types of backups including logical, physical offline ("cold") backups, and physical online ("hot") backups. It also discusses archiving redo logs, testing backup strategies, and implications of backup methods like downtime required and recovery time. Failure scenarios like statement failure, user process failure, user error, instance failure, and media failure are also summarized. Finally, it discusses logical backups using the Oracle Export utility and parameters that can be passed to it.
The document provides information about mass times and intentions for churches in Carraroe, Ireland. It announces upcoming events like a community text alert launch, confirmation, and a parish history book related to the 50th anniversary of the local school. It shares notices about pre-marriage courses, a charity concert, pop-up shop, and vocations to the priesthood. The document acts as a community newsletter to share parish updates and events.
Las aplicaciones de gestión de páginas web permiten a los usuarios conservar de forma sencilla la información de páginas web que podría ser de su interés para leerlas en otro momento.
This document discusses Oracle database backup and recovery. It covers the need for backups, different types of backups including full, incremental, physical and logical. It describes user-managed backups and RMAN-managed backups. For recovery, it discusses restoring from backups and applying redo logs to recover the database to a point in time. Flashback recovery is also mentioned.
The document provides a set of interview questions for an Oracle DBA role. It includes questions about database backups, restoring from backup, database initialization parameters, database object storage structures like data blocks and extents, table structures, database performance monitoring and tuning, database security, database utilities, and basic UNIX commands. The questions cover a wide range of topics that a junior or mid-level Oracle DBA should be familiar with.
This document provides an overview of Oracle database concepts and tools. It describes the core components of an Oracle database including the database, server processes, memory structures, and client/server architecture. It also outlines the tools used to configure an Oracle database such as the Oracle Universal Installer, Database Configuration Assistant, and command line utilities. Automatic Storage Management (ASM) is discussed as the preferred storage management solution.
This document discusses database backup strategies and solutions. It covers creating consistent backups, backing up without shutting down the database, incremental backups, automating backups, managing backups and reports, and monitoring the fast recovery area using Recovery Manager (RMAN) and Oracle Secure Backup. Key terms like backup types and modes are also defined.
The document provides an overview of the Oracle DBA course, including its objectives to identify the various components of the Oracle architecture and learn how to perform tasks like starting and shutting down a database. It then describes the key components of the Oracle architecture, including the Oracle database (physical files), Oracle instance (memory structures and processes), System Global Area (SGA) used to store shared database information, and database buffer cache which stores recently used data blocks retrieved from data files.
This document provides definitions and explanations of various Oracle database concepts and components. It defines terms like log switch, online redo log, archived redo log, database startup process, instance recovery, full backup restrictions, mounting modes, ARCHIVELOG mode advantages, database shutdown process, restricted instance startup, partial backup, mirrored redo log, and control file usage. It also answers questions on topics like views, tablespaces, schemas, segments, clusters, integrity constraints, indexes, extents, synonyms, and transactions.
DAC Notes. We provide best training and placement in Data warehousing and big data analytics . Mainily we offer training on
1) OBIEE
2)ODI
3)OBIA
4)INFORMATICA
5)HADOOP
The document provides an overview of data collection in the Courion Identity Mapping Solution. It discusses installing the required components, including Active Directory collector, configuring data collection rules and data feeds, and checking the SQL Server job agent. The data collection process extracts, transforms and loads account, identity and entitlement data from target systems into Courion using built-in collectors. It also outlines the data flow and job flow, and provides instructions on installing requirements such as certificates and connectors. Screenshots demonstrate how to install collectors, create data collection rules, view results and schedule jobs.
Oracle dba interview questions with answerupenpriti
This document contains 10 questions about Oracle DBA interview questions and their answers. It covers topics like components of the SGA, the order in which Oracle processes SQL statements, mandatory datafiles for an Oracle 11g database, and how sessions communicate with the database. The questions test knowledge of Oracle architecture, processes, memory structures, and common administrative tasks.
The document discusses several new features in Oracle Database 11g for management enhancements including:
1) Change capture and replay capabilities to setup test environments and perform online application upgrades.
2) Snapshot standbys for test environments that allow testing and discarding of writes without impacting the primary database.
3) Database replay to capture and replay workloads in pre-and post-change systems to analyze for errors or performance issues.
4) Several new capabilities for online patching, upgrades, and automatic diagnostic workflows.
This document provides a list of interview questions for an Oracle DBA with 3+ years of experience. It covers basic, moderate, advanced, and master level questions. The basic section includes questions about default passwords, connecting to Oracle, and using clients like SQL*Plus. The moderate section covers topics like PFILE vs SPFILE and Data Pump. The advanced section includes questions about background processes, views, and shutdown modes. The master section contains very specific questions even an experienced DBA may struggle with.
This document contains interview questions about Oracle database concepts and architecture. It covers physical and logical database structures, tablespaces, schemas, schema objects like tables, views, indexes, and sequences. It also discusses database administration topics like instances, parallel servers, memory structures like the system global area and program global area, and space allocation and management using rollback segments and tablespaces.
This document discusses configuring the Oracle Network environment. It covers using Enterprise Manager to create listeners and aliases, configure failover, and control the listener. It also discusses using tnsping to test connectivity and when to use shared vs dedicated servers. Tools covered include Enterprise Manager, Oracle Net Manager, lsnrctl, and SQL commands for configuring database links.
Oracle Recovery Manager (Oracle RMAN) has evolved since being released in version 8i. With the newest version of Oracle 12c , RMAN has great new features that will allow you to reduce your down time in case of a disaster. In this session you will learn about the new features that were introduced in Oracle 12c and how can you take advantage of them from the first day you upgrade to this version.
The document summarizes features and capabilities of Oracle Database including:
- Support for structured and unstructured data types including images, XML, and multimedia.
- Tools for managing growth of data and enabling innovation with different data types.
- Self-managing capabilities that help liberate DBAs from resource management tasks.
- Features for high performance, availability, security and compliance at lower costs.
Oracle Database 12c introduces a new multitenant architecture that allows multiple pluggable databases to run within a single consolidated container database. This simplifies database consolidation, lowering costs by reducing the hardware, software, and staffing required for management and administration. Resources like CPU, memory and processes are managed at the container level, improving utilization rates. Databases can also be provisioned, backed up, patched, and upgraded more efficiently within this shared architecture.
The document discusses database backup and recovery strategies in Oracle. It covers the different types of backups including logical, physical offline ("cold") backups, and physical online ("hot") backups. It also discusses archiving redo logs, testing backup strategies, and implications of backup methods like downtime required and recovery time. Failure scenarios like statement failure, user process failure, user error, instance failure, and media failure are also summarized. Finally, it discusses logical backups using the Oracle Export utility and parameters that can be passed to it.
The document provides information about mass times and intentions for churches in Carraroe, Ireland. It announces upcoming events like a community text alert launch, confirmation, and a parish history book related to the 50th anniversary of the local school. It shares notices about pre-marriage courses, a charity concert, pop-up shop, and vocations to the priesthood. The document acts as a community newsletter to share parish updates and events.
Las aplicaciones de gestión de páginas web permiten a los usuarios conservar de forma sencilla la información de páginas web que podría ser de su interés para leerlas en otro momento.
The document discusses 8 raptures that are mentioned in the Bible. It provides biblical references for the raptures of Enoch, Moses, Elijah, Jesus, the church, two witnesses, tribulation saints, and the final rapture when all people will be given to God. It then examines what is known and unknown about the rapture of the church from passages in 1 Thessalonians and 1 Corinthians. It proposes that the dead will rise first to reunite with glorified bodies, then the living will be instantly changed at the last trumpet blast during the rapture event.
El documento define el marketing como el conjunto de actividades empresariales para planificar, fijar, promover y distribuir productos que satisfacen las necesidades de los consumidores. Explica el proceso de marketing en tres fases: estratégica, de marketing mix y ejecución. También describe los conceptos de mercado, segmentación de mercados, mercado objetivo y posicionamiento, e incluye los elementos de un plan de marketing como la investigación de mercados.
This document provides answers to common small business HR questions. It addresses how to interview candidates, manage remote workers, help underperforming employees, and fire someone. The biggest HR challenges for businesses are finding and keeping talent, employee personal issues, and limited resources. Creative and unique employees should be given respect, clear objectives, flexibility, and independence in their work.
#8N y el Partido de la Red en I Congresso Internacional de NetativismoValentín Muro
La Unión Europea ha anunciado nuevas sanciones contra Rusia por su invasión de Ucrania. Las sanciones incluyen prohibiciones de viaje y congelamiento de activos para más funcionarios rusos, así como restricciones a las importaciones de productos rusos de acero y tecnología. Los líderes de la UE esperan que estas medidas adicionales aumenten la presión económica sobre Rusia y la disuadan de continuar su guerra contra Ucrania.
The document outlines tasks for a test day in Algebra class, including turning in a review handout, taking the Chapter 9 test, and possibly silent reading.
O documento descreve a história do cálculo do número pi. Explica que desde a Antiguidade os matemáticos tentavam calcular o valor exato da relação entre a circunferência e o diâmetro de um círculo, representada pelo número pi. Apresenta algumas das primeiras aproximações feitas, como 22/7 por Arquimedes, e como só no século XVII se descobriu que pi é um número irracional.
Este capítulo describe la pena de muerte en la época precolombina en el Perú. En la era pre-inca, la sociedad estaba organizada en unidades llamadas "ayllus", que eran comunidades de parientes que vivían juntas y compartían la tierra y otros recursos de forma colectiva. Dentro de cada ayllu, el curaca ejercía funciones judiciales y podía aplicar castigos, incluida posiblemente la pena de muerte. Luego, durante el imperio inca, se introdujeron nuevas normas y leyes que regularon
The teacher has several tasks for the day including returning graded work, doing a mental math timing activity, and providing work time for students. There are also three assignments listed - completing a million dollar activity due Monday, signing a chapter 11 test for extra credit, and noting that the final exam will be on Thursday.
The 8 steps to create a mobile app are: 1) identify a problem and decide app features, 2) decide on a platform such as Apple or Android, 3) design the app functionality, 4) develop a prototype, 5) integrate analytics tools like Google Analytics to track usage, 6) identify beta-testers to provide feedback and eliminate bugs, 7) release the app, and 8) support and upgrade the app based on user needs.
The document is a to-do list for a student that includes no class today due to testing with one teacher, SAT math testing tomorrow, and checking if a test was signed.
Wat zijn de mogelijkheden van gemeenten om met behulp van de Wet Milieubeheer bedrijven te verplichten om te verduurzamen? Vergroening lokale economie: prestatieafspraken, toezicht Wm energiebesparing uit SER Energieakkoord. Door Ministerie Infrastructuur en Milieu
The Gujarat Institute of Housing & Estate Developers (GIHED) is a registered organization located in Ahmedabad, Gujarat, India. GIHED can be contacted via their registered office address, telephone numbers, emails, and website for any inquiries.
The document is notes from a math lesson that include:
1) An assignment that is due the next day and a test later that week.
2) Warm up problems simplifying expressions.
3) Information on multiplying and dividing integers.
4) Examples simplifying expressions with integers.
5) Problems solving for variables and finding square roots.
6) Problems expanding expressions.
The document outlines a teacher's to-do list for their work day, including returning graded assignments, having students check their lessons and checkpoints for Chapter 6 in preparation for an upcoming test on Tuesday December 3rd, and allowing for free time.
This certificate recognizes Ré-Dean Grobler for completing a course in Writing Reports & Proposals. It provides Ré-Dean Grobler's name, learner number, identity number, date of completion (September 15, 2015), and certificate number (C3184). The certificate was issued by Rachel Johnson.
Oracle 11G introduces several new features including Flashback Data Archive for extended data recovery, Database Replay for testing system changes, SQL Performance Analyzer for comparing SQL statement performance before and after changes, and Automatic Diagnostic Repository for proactive health checking and problem resolution. Other new features include online patching, simplified memory management with a single MEMORY_TARGET parameter, enhanced SQL Access Advisor, virtual columns, invisible indexes, and transparent tablespace encryption.
This document discusses database backup and recovery strategies in Oracle. It covers different types of backups including logical, physical, online and offline backups. It emphasizes the importance of backups for recovery purposes. Different failure scenarios are described such as statement failure, user process failure, user error, instance failure and media failure. The roles of logical backups using Export and archiving redo logs are explained. Considerations for backup strategies include business needs, availability requirements, transaction volumes and read-only tablespaces. Testing backups is recommended to ensure recovery success.
1 ISACA JOURNAL VOLUME 1, 2012FeatureThe ability to r.docxhoney725342
1 ISACA JOURNAL VOLUME 1, 2012
Feature
The ability to restore databases from valid
backups is a vital part of ensuring business
continuity. Backup integrity and restorations
are an important piece of the IT Governance
Institute’s IT Control Objectives for Sarbanes-
Oxley, 2nd Edition. In many instances, IT auditors
merely confirm whether backups are being
performed either to disk or to tape, without
considering the integrity or viability of the
backup media.
This article covers the topics related to
data loss and the types of database backup
and recovery available. Best practices that can
assist an auditor in assessing the effectiveness
of database backup and recovery are also
provided. This article focuses on the technologies
and capabilities of the Oracle relational
database management system (RDBMS) and
Microsoft (MS) SQL Server because, together,
they cover approximately 40 percent of all
database installations. Figure 1 provides a short
comparison of Oracle and MS SQL Server.
One of the key responsibilities of a database
administrator (DBA) is to prepare for the
possibility of media, hardware and software
failure as well as to recover databases during a
disaster. Should any of these failures occur, the
major objective is to ensure that the database
is available to users within an acceptable time
period, while ensuring that there is no loss of
data. DBAs should evaluate their preparedness
to respond effectively to such situations by
answering the following questions:
• How confident is the DBA that the data on which
the company business depends are backed up
successfully and that the data can be recovered
from these backups within the permissible time
limits, per a service level agreement (SLA)
or recovery time objective, as specified in the
organization’s disaster recovery plan?
• Has the DBA taken measures to draft and test
the procedures to protect as well as recover the
databases from numerous types of failures?
The following is a checklist for database
backup and recovery procedures that are
explained throughout this article:
1. Develop a comprehensive backup plan.
2. Perform effective backup management.
3. Perform periodic databases restore testing.
4. Have backup and recovery SLAs drafted and
communicated to all stakeholders.
5. Have the disaster recovery plan (DRP)
database portion drafted and documented.
6. Keep your knowledge and know-how on
database and OS backup and recovery tools up
to date.
Comprehensive BaCkup plan
DBAs are responsible for making a
comprehensive backup plan for databases for
which they are accountable. The backup plan
should include all types of RDBMSs within the
enterprise and should cover the following areas:
• Decide what needs to be backed up. It is
imperative that the DBA be aware of database
and related OS and application components
that need to be backed up, whether via an
online backup or an offline cold backup.
The following are d ...
Catalogic ECX: Snapshot and Replication Automation for Pure StorageCatalogic Software
Catalogic ECX in-place copy data management for Pure Storage simplifies and automates operation of your Pure Storage FlashArray infrastructure through comprehensive management of Pure Storage FlashRecover snapshots and replication. By providing an application- and VM-aware copy management software layer, ECX reduces copy sprawl, simplifies data protection and disaster recovery, and delivers value-adding use cases such as automated infrastructure deployment for Dev-Test or DevOps.
RMAN has evolved since Oracle 8i and includes new features in Oracle 12c that help reduce downtime. In 12c, a container database can include pluggable databases. RMAN supports backup and recovery of container databases and individual pluggable databases. New features in 12c include the SYSBACKUP privilege which allows backups without granting full SYSDBA privileges, and support for multitenant container databases and pluggable databases.
This document discusses features of various Oracle database releases including 8i, 9i, 10g, and 11g. It provides overviews of new capabilities in areas like interMedia, spatial, partitioning, availability, data warehousing, and performance. Graphs show Oracle's market share dominance over IBM and Microsoft. The document also outlines Oracle's strategies for .NET integration on Windows and grid computing.
This document discusses database backup strategies and procedures in SQL Server. Some key points:
- SQL Server uses a backup engine optimized for speed to quickly grab database pages during a backup without regard to page order. Multiple threads can write pages simultaneously to backup devices.
- A full backup captures all used data pages in the database. Transaction log and differential backups capture only changed pages since the previous backups.
- Partial backups can reduce size by backing up only specific filegroups. File/filegroup backups allow restoring portions of a database.
- Maintenance plans provide a graphical tool for automating common backup and maintenance tasks like reindexing.
Oracle Corporation develops database software and cloud systems. An Oracle database administrator's responsibilities include installing and upgrading the Oracle database, allocating storage, creating database objects, maintaining security, backing up the database, and recovering from failures. Key tools for administration include Oracle Universal Installer, Database Configuration Assistant, SQL*Plus, and Recovery Manager.
Quontra Solutions provides Oracle-12c DBA Online Training by excellent experienced IT professionals who has more than 7 Years of real time experience. We offer the best quality and affordable training, so you get trained from where you are, from our experienced instructors, remotely using Webex / Gotomeeting.
This document summarizes new high availability features in Oracle8i. It discusses enhancements that provide highly available database solutions including fast-start fault recovery that minimizes downtime from system failures, online maintenance capabilities to perform tasks without impacting users, and clustering and application failover options to improve availability. The features are aimed at supporting 24/7 access to data and meeting service level objectives for both small businesses and large enterprises.
This document discusses various methods for performing database backups, including Recovery Manager (RMAN), Oracle Secure Backup, and user-managed backups. It covers key backup concepts like full versus incremental backups, online versus offline backups, and image copies versus backup sets. The document also provides instructions on configuring backup settings and scheduling automated database backups using RMAN and Enterprise Manager.
This document discusses backup and recovery strategies for databases using Oracle Recovery Manager (RMAN). It recommends maintaining redundancy through techniques like RAID and mirroring to prevent the need for recovery. It emphasizes the importance of keeping the redundancy set that is needed for recovery on separate disks from the primary database files. It also stresses the need for frequent, redundant backups of archived redo logs to enable recovery to any point in time.
1) The document discusses how RMAN reporting provides an effective way to determine the best database backup strategy and ensure a successful recovery by understanding what has been backed up and what backups are needed.
2) It recommends running regular RMAN reports to identify files needing backup, which backups would be required for recovery, and historical information about past RMAN jobs.
3) The document provides examples of RMAN commands like LIST, REPORT, and RESTORE PREVIEW that can be used to generate useful information about current and past backups from the RMAN repository.
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8 i recovery_manager
1. Oracle8iTM Recovery Manager
Technical Features Overview
February 1999
INTRODUCTION
Database backup, restore and recovery are critical processes underlying any mission-critical system. Imagine the
potential for lost revenue, customer dissatisfaction or unrecoverable information caused by a media failure or
similar disaster. Long term projects, key customer information or new orders could be lost. A well-implemented
data backup and recovery strategy is a cornerstone for every deployment, making it possible to restore and recover
all or part of a database without data loss.
With the release of Oracle8™ extensive backup and recovery functionality was added in a new utility. The
Recovery Manager provided an integrated method for creating, managing and restoring backups of a database.
Recovery Manager addresses the following requirements of a comprehensive database backup and recovery
system:
· Backing up a database must be performed without interrupting current business functions.
· Recovery operations must be performed with minimal impact on the business processing.
· Due to the large sizes of databases, backup sizes need to be proportional to the size of transactional changes
on the system, not proportional to the size of the database itself.
· Recovery time must be proportional to the amount of data being recovered.
The objective in creating the Recovery Manager was to provide greater ease of management and administration of
the backup and recovery operations while maintaining superior performance and increased availability of the
database.
2. Oracle8i Recovery Manager
February 1999
2
PRODUCT SUMMARY
NEW RECOVERY MANAGER FUNCTIONALITY IN ORACLE8i
Oracle8i, the database for Internet computing, builds on and adds to the Recovery Manager capabilities
introduced with Oracle8. New Oracle8i Recovery Manager functionality includes:
· Proxy Copy
· Disk Affinity
· LIST Command Enhancements
· Recovery Catalog Cross Check
· Multiplexed Backup Sets
· Controlfile Character Set Specification
· STARTUP and SHUTDOWN Commands
· Clone Command
· Automatic Catalog Maintenance
PROXY COPY
Recovery Manager controls the integration of the database server directly, using a tape media management
system which is compliant with Oracle’s “System Backup to Tape (SBT)” tape media management application
programming interface (API). This allows customers to choose from a variety of tape media management
subsystems and enables Oracle to read or write tape volumes — perhaps in a tape library — directly.
The Oracle8i server can integrate with any media management software that is compliant with Oracle's Media
Management API. This allows customers to choose from a variety of tape media management subsystems, and
enables Oracle to read or write backups on non-disk media such as tapes and to use automated tape libraries.
In Oracle8i, the Media Management API has been enhanced to allow the bulk I/O of creating and restoring
database backups to be off-loaded from the Oracle host to the media manager. This makes it possible, during full
online or offline backups, for the Oracle database server to not be directly involved in the reading or writing
process. Thus, media managers that directly integrate disk and tape storage subsystems can perform data
movement between disk and tape at the speed of the underlying devices, freeing host CPU resources, and
reducing the impact on application response time of backup or restore workloads.
3. This capability is known as "proxy copy" because Oracle selects the media manager as a proxy to actually copy
data to or from tape and will be supported by a number of media management vendor partners in Oracle's Backup
Solutions Program (BSP).
Oracle8i Recovery Manager
February 1999
3
DISK AFFINITY
In Oracle® Parallel Server configurations, the speed of access to disks may not be uniform across the nodes of the
cluster. One or more nodes may have "affinity" for a particular set of disks, which means that access to these disks
from these nodes is more efficient than from other nodes. Recovery Manager in Oracle8i is aware of this affinity
when scheduling backups and restores and attempts to schedule datafile backups on channels allocated at nodes
that have affinity to those files.
LIST COMMAND ENHANCEMENTS
The LIST command in Oracle8i now supports multiple ListObjects, rather than just one. LIST BACKUPSET
output has been enhanced to show backup pieces and files included in the set.
The ALL keyword is added to list all backup sets in the catalog, whether usable by the current database
incarnation or not.
RECOVERY CATALOG CROSS CHECK
A third-party media management subsystem often has its own catalog of backup files that maps a file to tape
volumes and contains metadata about the backup files. Many media managers support automatic tape expiration.
This can cause earlier versions of Recovery Manager’s recovery catalog to become out of sync with the backup
file catalog. In Oracle8i, Recovery Manager provides a means to re-synchronize the recovery catalog with the
media management catalog.
MULTIPLEXED BACKUP SETS
Archive logs are critical to data recovery and there should be redundant tape copies of each archive log. In
Oracle8i, Recovery Manager provides an efficient way to create redundant archive log backup sets and datafile
backup sets.
A new command, “SET DUPLEX,” is used to specify how many copies of output files to create. Each channel
will then create N copies of each backup piece, where N is the value specified in the SET DUPLEX command. If
a tag is specified, then all backup pieces share the same tag.
4. Oracle8i Recovery Manager
February 1999
4
CONTROLFILE CHARACTER SET SPECIFICATION
Starting with Oracle Version 8.0.5, the database character set ID is stored in the controlfile. This allows access
to the database character set before a database open — which is necessary for Recovery Manager to correctly
interpret tablespace names prior to the database open when the character set happens to be something other than
the default (US7ASCII). The CREATE CONTROLFILE syntax has been expanded to optionally accept the
database character set name, so that character set information is available at mount time.
STARTUP AND SHUTDOWN COMMANDS
STARTUP and SHUTDOWN commands have been added to Recovery Manager for starting up and shutting
down the target database.
CLONE COMMAND
The clone command enables the creation of a replicated database (clone) using the backups stored in the media
manager from another database. This replicated database can be given a different DBNAME or have the same
DBNAME as the one just cloned. One possible use of a clone
database is to create a safe environment for testing backup and recovery procedures from a real, production
database.
AUTOMATIC CATALOG MAINTENANCE
This feature allows recovery catalog creation and maintenance to be done via Recovery Manager commands
rather than by running separate SQL scripts. The new commands are: CREATE CATALOG, UPGRADE
CATALOG, and DROP CATALOG.
5. Oracle8i Recovery Manager
February 1999
5
EXISTING RECOVERY MANAGER FUNCTIONALITY
In addition to the new features listed above, Recovery Manager carries forward all the features and functionality
introduced with Oracle8. One of the most important features is a backup and recovery process that is fully
managed by the server. This not only greatly minimizes the likelihood of database administrator (DBA) error in
the backup or recovery steps, it also frees the DBA from substantial administrative tasks. In other database
management systems, the backup and restore operations are manual tasks with limited functionality, done at the
operating system level, and the DBA has to spend considerable time managing this process. Restoring all or part
of the database is very straightforward in Oracle8, because Recovery Manager finds the appropriate backups and
restores them as needed. Recovery Manager automatically restores any archive logs needed for recovery as well.
EASES MANAGEMENT OF THE BACKUP PROCESS
Recovery Manager is the component of the backup and recovery system that manages backup creation,
restoration and recovery operations. With Recovery Manager, database administrator productivity goes up and
the frequency and severity of human errors goes down, because the database system is controlling and managing
the backup and recovery operations. The work of actually creating backups and recovering with them is done
inside the Oracle8i server itself. Recovery Manager maintains a recovery catalog that holds information about the
backup files and archived redo log files, thereby freeing the DBA from having to track all the backup copies and
archive logs. It then uses the recovery catalog to automate both restore and recovery operations, so there is no
chance of accidentally restoring from the wrong backup.
Recovery Manager provides a way to:
· Automate Both the Restore and Recovery Operations.
· Perform Automatic Parallelization of Backups and Restores.
· Generate a Printable Report of All Backup and Recovery Activity.
NO SINGLE POINT OF FAILURE
Recovery Manager can maintain a recovery catalog containing information about the backup files and archived
redo log files. This greatly simplifies backup management for the DBA, since the database system is now
keeping track of all the backups. The recovery catalog minimizes the likelihood of administrator error, since the
system determines which backups to restore from and which archive logs are needed to recover with that backup.
The recovery catalog is used as a repository of information to automate both backup and restore operations, as
well as recovery operations. Oracle8i can use one recovery catalog to manage multiple (local or remote) Oracle8i
databases, thereby eliminating any possible single point of failure in the backup strategy.
6. The recovery catalog is stored in an Oracle8i database. The recommended approach is to use an alternate
database to contain the recovery catalog for the target database being backed up. That way, a media loss on one
database does not affect the recovery catalog, since it resides on a different database. For example, a production
database can be backed up and managed with a recovery catalog that resides on a work station database, and that
database can be backed up and managed with a recovery catalog that resides on the production database. This
way, the workstation and production databases can provide comprehensive backup facilities for each other. It is
critical that the recovery catalog be backed up also, to avoid any possibility of it being a single point of failure. It
can then be backed up and recovered using the Oracle8i Recovery Manager facility, since it resides within an
Oracle8i database.
Larger sites with multiple Oracle8i systems installed may create a single recovery catalog to maintain backup and
recovery information for all their Oracle8i databases. This greatly simplifies maintenance and administration of
multiple databases. The recovery catalog can also be located at a remote site, separate from the target database or
databases. This helps minimize the impact of any failure, since it is very unlikely that a recovery operation will
be needed on the target database while there is a simultaneous failure of the remote recovery catalog database.
The database server performs various integrity checks on the backup files used for a restore operation.
Oracle8i Recovery Manager
February 1999
6
COMPREHENSIVE REPORTS DESCRIBE BACKUP STATUS
Reports can be run against the recovery catalog to see, for example, which files need backing up and which
backups are no longer required.
The recovery catalog contains:
· Information About Datafile and Archivelog Backup Sets.
· Information About Datafile Copies.
· Information About Archived Redo Logs and Their Backup Copies.
· Information About the Tablespaces and Datafiles of the Target Database.
· Named User-Created Sequences of Commands Called Stored Scripts.
7. Oracle8i Recovery Manager
February 1999
7
SIMPLIFIED FOR SMALL DATABASES
The recovery catalog is optional in the backup and recovery strategy. Recovery Manager supports an operational
mode where it obtains the recovery information needed from the control file. This mode is appropriate for small
databases, where installation and administration of another database to serve as the recovery catalog would be
burdensome, or in a case where the additional capabilities provided by the recovery catalog are not desired.
Some features are not available when operating without a recovery catalog:
· Point-In-Time Recovery
· Stored Scripts
· Automatic Recovery When the Control File Is Not Current
BACKUP TYPES
Oracle8i supports four basic methods of backups:
· Backup Sets
· Incremental Backups (Must Be Part of a Backup Set)
· Datafile Copies
· Operating System Generated Backups
A backup set contains one or more input files of the same type, either datafiles or archive logs. This greatly
simplifies backup file management, since multiple files may be backed up into one output file, so there are fewer
files to store and manage. A particular backup file from the backup set must then be extracted with a restore
operation by the Recovery Manager. Backup sets can be full or incremental backups of the files, taken while the
database was open or closed. A backup is made up of one or more datafiles that contains all blocks of the
datafile that have ever been used. Oracle8i allows you to create and restore full backups of datafiles, tablespaces,
archive logs, control files — and the database in its entirety — for maximum manageability and flexibility.
An incremental backup is a backup of one or more datafiles that contains only those blocks (at the same or a
lower level), that have been modified since a previous backup. File size of backups is greatly reduced, since only
modified blocks need to be backed up, instead of all blocks of the datafiles. Oracle8i allows you to create and
restore incremental backups of datafiles, tablespaces, and the database.
A datafile copy contains a single input datafile that can be used “as is” to perform recovery. No restore operation
is needed to use it, thereby saving the time normally needed to restore the file. Sites that require true high
availability benefit from this feature, because it allows the system to become available for work as quickly as
possible. This type of file is created by Recovery Manager as a "fuzzy" copy of a single file, taken (if desired)
8. while the database is online and being updated. Simply point the control file directly at the backup copy and
media recovery is performed to make the copy current. This type of backup is only allowed to disk, so the copy
can be used "as is," without a restore operation. The recovery catalog is then updated to indicate that the copy has
been "consumed;" in other words, the file copy is no longer available for any future use as a backup. Not having
to restore the backup file saves a great deal of time, thereby making the recovered data available faster. The only
additional downtime needed is the time required to do the actual recovery operation on that backup file.
Operating system-generated backups created externally to Oracle are fully supported and usable under Oracle8i
and may be tracked by the recovery catalog as a full, level 0 backup that can be used as a basis for subsequent
incremental backups.
Oracle8i Recovery Manager
February 1999
8
AVAILABILITY INCREASES WITH INCREMENTAL BACKUP AND RESTORE
The time it takes for backup and restore operations is relative to the amount of transactional data changed, and
not to the size of the datafiles themselves. This substantially reduces the time needed to take backups of very
large datafiles, since there is no need to copy the entire file. Once a baseline level 0 backup has been taken,
subsequent backups need only copy the changed portions of the datafiles, rather than copying the whole file
whether or not any data has been modified. These types of backups are called incremental backups.
Incremental backups are taken as part of a backup set. It contains a backup of one or more datafiles that contains
only those blocks that have been modified since a previous backup at the same or lower level. The multi-level
incremental backup feature allows you to create different levels of incremental backups. Each level is indicated
by an integer, with level 0 being used to backup all used datafile blocks. An incremental backup at any particular
level consists of those blocks that have been modified since the last backup at that level or lower.
Creating cumulative incremental backups reduces the work needed for a recovery operation. These backups
ensure that you need only one incremental backup from any particular level at recovery time. However,
cumulative backups require more space and time to create because they duplicate the work done by previous
backups at the same level.
REDUCES BACKUP AND RECOVERY TIME WITH PARALLEL OPERATIONS
When backing up multiple datafiles, Recovery Manager automatically reads them in parallel. It is important to
keep an output device streaming continuously, helping minimize the time needed for the backup operation.
Recovery Manager uses asynchronous I/O to read the files and write to the output devices, if the platform
supports it. You can use I/O slaves to take advantage of this performance improvement even in platforms that
don't support asynchronous I/O.
9. Multiple backup or recovery sessions can be executed concurrently. Recovery Manager may parallelize its
operation, establishing multiple logon sessions and conducting multiple conversations in parallel. Concurrent
sessions must operate on disjoint sets of database files.
Parallelization of backup, copy, and restore commands is handled automatically by the Recovery Manager.
Recovery Manager establishes one database connection to the target database for each sequential I/O device. The
administrator only needs to specify a list of one or more sequential I/O devices, and the objects to be backed up,
copied, or restored. Parallelism is exploited within the context of a single command. So, if copies of 10 datafiles
are needed, it is better to issue a single COPY command that specifies all ten copies, instead of issuing ten
separate copy commands.
Oracle8i Recovery Manager
February 1999
9
INCREASES AVAILABILITY WITH POINT-IN-TIME TABLESPACE RECOVERY
With Oracle8i, you can perform a point-in-time recovery on a single tablespace, instead of taking the whole
database back in time logically. This allows some applications to continue to operate while some other part of
the database is being recovered, thereby allowing greater availability of the data. It is strongly recommended that
this feature be used with the guidance of Worldwide Support, since it is possible that human error will cause
database inconsistency when a tablespace point-in-time recovery is performed.
EASES THE USE OF ADMINISTRATION TOOLS
Oracle® Enterprise Manager supports all the Recovery Manager facilities and provides a graphical user interface
(GUI) to make it easier to use the Recovery Manager commands. This helps save database administrator time. It
also allows scheduling of backups during off-periods of the system. Backups can then be scheduled at night,
when there may be less activity on the system.
A number of third-party vendors are integrating their products to support the Recovery Manager capabilities of
Oracle8i using GUI interfaces; these will make working with Recovery Manager's recovery processes easier and
make handling backups to disk and tape easier at the operating system (O/S) level.
10. Oracle8i Recovery Manager
February 1999
10
MEDIA MANAGEMENT SYSTEM INTERFACE
Backing up files to tape is required in most backup scenarios. This minimizes expensive disk consumption and
facilitates sending backups elsewhere for disaster recovery. Copying a sizable database to disk is prohibitively
expensive in many cases. Backing up to tape is the reasonable alternative. Also, backup tapes of the database
can then be sent to a secondary location for long term storage, so they are available in the event of a major failure
at the primary site. Recovery Manager supports an application programming interface (API) for data movement
between Oracle and other vendors' products. This provides the integration with tape management systems that is
necessary for backup and recovery.
In most cases, there is no need to invest in new media management software packages. Oracle8i's backup and
recovery facilities interface with most existing media management packages.