Automatic Storage Management allows Oracle databases to use disk storage that is managed as an integrated cluster file system. It provides functions like striping, mirroring, and rebalancing of data across storage disks. The document outlines new features in Oracle Exadata and Automatic Storage Management including Flex ASM, which eliminates the requirement for an ASM instance on every server, and Flex Disk Groups, which provide file groups and enable quota management and redundancy changes for databases. It also discusses enhancements to disk offline and online operations and rebalancing.
This version of "Oracle Real Application Clusters (RAC) 19c & Later – Best Practices" was first presented in Oracle Open World (OOW) London 2020 and includes content from the OOW 2019 version of the deck. The deck has been updated with the latest information regarding ORAchk as well as upgrade tips & tricks.
Oracle Real Application Clusters 19c- Best Practices and Internals- EMEA Tour...Sandesh Rao
In this session, I will cover under-the-hood features that power Oracle Real Application Clusters (Oracle RAC) 19c specifically around Cache Fusion and Service management. Improvements in Oracle RAC helps in integration with features such as Multitenant and Data Guard. In fact, these features benefit immensely when used with Oracle RAC. Finally we will talk about changes to the broader Oracle RAC Family of Products stack and the algorithmic changes that helps quickly detect sick/dead nodes/instances and the reconfiguration improvements to ensure that the Oracle RAC Databases continue to function without any disruption
Oracle Active Data Guard: Best Practices and New Features Deep Dive Glen Hawkins
Oracle Data Guard and Oracle Active Data Guard have long been the answer for the real-time protection, availability, and usability of Oracle data. This presentation provides an in-depth look at several key new features that will make your life easier and protect your data in new and more flexible ways. Learn how Oracle Active Data Guard 19c has been integrated with Oracle Database In-Memory and offers a faster application response after a role transition. See how DML can now be redirected from an Oracle Active Data Guard standby to its primary for more flexible data protection in today’s data centers or your data clouds. This technical deep dive on Active Data Guard is designed to give you a glimpse into upcoming new features brought to you by Oracle Development.
Oracle Open World (OOW) 2014 presentation on Oracle Cache Fusion; how it works and how to use it in an optimized fashion to scale an Oracle RAC system.
This version of "Oracle Real Application Clusters (RAC) 19c & Later – Best Practices" was first presented in Oracle Open World (OOW) London 2020 and includes content from the OOW 2019 version of the deck. The deck has been updated with the latest information regarding ORAchk as well as upgrade tips & tricks.
Oracle Real Application Clusters 19c- Best Practices and Internals- EMEA Tour...Sandesh Rao
In this session, I will cover under-the-hood features that power Oracle Real Application Clusters (Oracle RAC) 19c specifically around Cache Fusion and Service management. Improvements in Oracle RAC helps in integration with features such as Multitenant and Data Guard. In fact, these features benefit immensely when used with Oracle RAC. Finally we will talk about changes to the broader Oracle RAC Family of Products stack and the algorithmic changes that helps quickly detect sick/dead nodes/instances and the reconfiguration improvements to ensure that the Oracle RAC Databases continue to function without any disruption
Oracle Active Data Guard: Best Practices and New Features Deep Dive Glen Hawkins
Oracle Data Guard and Oracle Active Data Guard have long been the answer for the real-time protection, availability, and usability of Oracle data. This presentation provides an in-depth look at several key new features that will make your life easier and protect your data in new and more flexible ways. Learn how Oracle Active Data Guard 19c has been integrated with Oracle Database In-Memory and offers a faster application response after a role transition. See how DML can now be redirected from an Oracle Active Data Guard standby to its primary for more flexible data protection in today’s data centers or your data clouds. This technical deep dive on Active Data Guard is designed to give you a glimpse into upcoming new features brought to you by Oracle Development.
Oracle Open World (OOW) 2014 presentation on Oracle Cache Fusion; how it works and how to use it in an optimized fashion to scale an Oracle RAC system.
Oracle RAC 12c Practical Performance Management and Tuning as presented during Oracle Open World 2013 with Michael Zoll.
This is part three of the Oracle RAC 12c "reindeer series" used for OOW13 Oracle RAC-related presentations.
This part concludes the main part of the "reindeer series" except for one bonus track "Oracle Multitenant meets Oracle RAC 12c" (available via SlidesShare, too).
Make Your Application “Oracle RAC Ready” & Test For ItMarkus Michalewicz
This presentation talks about the secrets behind Oracle RAC’s horizontal scaling algorithm, Cache Fusion, and how you can ensure that your application is “Oracle RAC ready.”. It discusses do's and don'ts and how to test your application for "Oracle RAC readiness". This version was first presented in Sangam19.
This presentation is based on Lawrence To's Maximum Availability Architecture (MAA) Oracle Open World Presentation talking about the latest updates on high availability (HA) best practices across multiple architectures, features and products in Oracle Database 19c. It considers all workloads, OLTP, DWH and analytics, mixed workload as well as on-premises and cloud-based deployments.
Oracle RAC 19c - the Basis for the Autonomous DatabaseMarkus Michalewicz
Oracle Real Application Clusters (RAC) has been Oracle's premier database availability and scalability solution for more than two decades as it provides near linear horizontal scalability without the need to change the application code. This session explains why Oracle RAC 19c is the basis for Oracle's Autonomous Database by introducing some of its latest features, some of which were specifically designed for ATP-D, as well as by taking a peek under the hood of the dedicated Autonomous Database Service (ATP-D).
Oracle RAC on Extended Distance Clusters - PresentationMarkus Michalewicz
NOTE that a newer version of this presentation (covering Oracle RAC 12c Release) has been uploaded to my SlideShare: https://www.slideshare.net/MarkusMichalewicz/oracle-extended-clusters-for-oracle-rac
This presentation can be used as an illustration for some of the ideas and best practices discussed in the paper "Oracle RAC and Oracle RAC One Node on Extended Distance (Stretched) Clusters"
Oracle RAC is an option to the Oracle Database Enterprise Edition. At least, this is what it is known for. This presentation shows the many ways in which the stack, which is known as Oracle RAC can be used in the most efficient way for various use cases.
Oracle Database 19c, builds upon key architectural, distributed data and performance innovations established in earlier versions Oracle Database 12c and 18c releases. Oracle 19c has many new features, in this presentation we have covered below areas
Automated Installation, Configuration and Patching
AutoUpgrade and Database Utilities
What to Expect From Oracle database 19cMaria Colgan
The Oracle Database has recently switched to an annual release model. Oracle Database 19c is only the second release in this new model. So what can you expect from the latest version of the Oracle Database? This presentation explains how Oracle Database 19c is really 12.2.0.3 the terminal release of the 12.2 family and the new features you can find in this release.
Zero Data Loss Recovery Applianceによるデータベース保護のアーキテクチャオラクルエンジニア通信
データ量の増大、業務の24時間化に伴い、従来のバックアップ・ソリューションではデータ保護のニーズをすべて満たせなくなってきています。これを解消すべくOracle Databaseの保護に特化して設計されたエンジニアド・システム、Zero Data Loss Recovery Applianceが登場しました。これからの時代のデータ保護テクノロジーに関して、アーキテクチャを中心に紹介します。
Oracle Flex ASM - What’s New and Best Practices by Jim WilliamsMarkus Michalewicz
Oracle Open World (OOW) 2014 Presentation by Jim Williams (Oracle ASM Product Manager) on Oracle Flex ASM - What's New and Best Practices. The presentation provides an overview of enhancements (What's New) in Oracle ASM 12c, especially with respect to Oracle Flex ASM, and provides best practices which can be applied in any environment (Flex or Standard ASM). This presentation has also more background information for some of the configuration recommendations that I made in my "Oracle RAC (12.1.0.2) Operational Best Practices" presentation.
Oracle RAC 12c Practical Performance Management and Tuning as presented during Oracle Open World 2013 with Michael Zoll.
This is part three of the Oracle RAC 12c "reindeer series" used for OOW13 Oracle RAC-related presentations.
This part concludes the main part of the "reindeer series" except for one bonus track "Oracle Multitenant meets Oracle RAC 12c" (available via SlidesShare, too).
Make Your Application “Oracle RAC Ready” & Test For ItMarkus Michalewicz
This presentation talks about the secrets behind Oracle RAC’s horizontal scaling algorithm, Cache Fusion, and how you can ensure that your application is “Oracle RAC ready.”. It discusses do's and don'ts and how to test your application for "Oracle RAC readiness". This version was first presented in Sangam19.
This presentation is based on Lawrence To's Maximum Availability Architecture (MAA) Oracle Open World Presentation talking about the latest updates on high availability (HA) best practices across multiple architectures, features and products in Oracle Database 19c. It considers all workloads, OLTP, DWH and analytics, mixed workload as well as on-premises and cloud-based deployments.
Oracle RAC 19c - the Basis for the Autonomous DatabaseMarkus Michalewicz
Oracle Real Application Clusters (RAC) has been Oracle's premier database availability and scalability solution for more than two decades as it provides near linear horizontal scalability without the need to change the application code. This session explains why Oracle RAC 19c is the basis for Oracle's Autonomous Database by introducing some of its latest features, some of which were specifically designed for ATP-D, as well as by taking a peek under the hood of the dedicated Autonomous Database Service (ATP-D).
Oracle RAC on Extended Distance Clusters - PresentationMarkus Michalewicz
NOTE that a newer version of this presentation (covering Oracle RAC 12c Release) has been uploaded to my SlideShare: https://www.slideshare.net/MarkusMichalewicz/oracle-extended-clusters-for-oracle-rac
This presentation can be used as an illustration for some of the ideas and best practices discussed in the paper "Oracle RAC and Oracle RAC One Node on Extended Distance (Stretched) Clusters"
Oracle RAC is an option to the Oracle Database Enterprise Edition. At least, this is what it is known for. This presentation shows the many ways in which the stack, which is known as Oracle RAC can be used in the most efficient way for various use cases.
Oracle Database 19c, builds upon key architectural, distributed data and performance innovations established in earlier versions Oracle Database 12c and 18c releases. Oracle 19c has many new features, in this presentation we have covered below areas
Automated Installation, Configuration and Patching
AutoUpgrade and Database Utilities
What to Expect From Oracle database 19cMaria Colgan
The Oracle Database has recently switched to an annual release model. Oracle Database 19c is only the second release in this new model. So what can you expect from the latest version of the Oracle Database? This presentation explains how Oracle Database 19c is really 12.2.0.3 the terminal release of the 12.2 family and the new features you can find in this release.
Zero Data Loss Recovery Applianceによるデータベース保護のアーキテクチャオラクルエンジニア通信
データ量の増大、業務の24時間化に伴い、従来のバックアップ・ソリューションではデータ保護のニーズをすべて満たせなくなってきています。これを解消すべくOracle Databaseの保護に特化して設計されたエンジニアド・システム、Zero Data Loss Recovery Applianceが登場しました。これからの時代のデータ保護テクノロジーに関して、アーキテクチャを中心に紹介します。
Oracle Flex ASM - What’s New and Best Practices by Jim WilliamsMarkus Michalewicz
Oracle Open World (OOW) 2014 Presentation by Jim Williams (Oracle ASM Product Manager) on Oracle Flex ASM - What's New and Best Practices. The presentation provides an overview of enhancements (What's New) in Oracle ASM 12c, especially with respect to Oracle Flex ASM, and provides best practices which can be applied in any environment (Flex or Standard ASM). This presentation has also more background information for some of the configuration recommendations that I made in my "Oracle RAC (12.1.0.2) Operational Best Practices" presentation.
Updated study material available for 1Z0-027 Exam-Oracle Exadata Database Machine Administration, Software Release visit@ https://www.troytec.com/1Z0-027-exams.html
Oracle RAC 12c Best Practices with Customer Example (Sanger) as presented during Oracle Open World 2013 (OOW13).
This is part one of the Oracle RAC 12c "reindeer series" used for OOW13 Oracle RAC-related presentations.
Smart monitoring how does oracle rac manage resource, state ukoug19Anil Nair
An important requirement for HA and to provide scalability is to detect problems and resolve them quickly before the user sessions get affected. Oracle RAC along with its Family of Solutions work together cohesively to detect conditions such as "Un-responsive Instances", Network issues quickly and resolve them by either redirecting the work to other instances or redundant network paths
Using Machine Learning to Debug Oracle RAC IssuesAnil Nair
This deck was used at UKOUG 2018 to explain how Oracle Real Application Clusters (RAC) uses Machine Learning to make the job of Database Administrators easier.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
17. 17
Number of Disk Groups - Continued
• Separate disk groups for different storage tiers, e.g. hard disk or flash
• A system has disks of varying capacity and performance. Because
different drive types cannot be mixed in the same disk group and
separate disk groups are required
• To isolate specific databases due to operational considerations such
as E-Business Suite data and Siebel data
Reasons for More Than the Recommended Minimum Number of Disk
Groups
1
20. 20
How to Create New Disk Groups with no
Unallocated Space
• Option 1: Free up space from an existing disk group
• Delete or move some files from disk group, if necessary and possible
• Resize all ASM disks to a smaller size
• Resize the respective grid disks to a smaller size
• Use the newly available space to create new grid disks
• Create a new disk group using new grid disks
• Option 2: Obtain additional storage cells
20
27. 28
ASM Disk Group Attributes
• appliance.mode set to TRUE
• Fixed partnering: When disks are dropped due to failure, no
partnership change; reduces data movement when restoring
redundancy and improves availability
• All disks must be the same type (SSD or HDD)
• Disks must be in consecutive slot numbers to avoid missing hardware
• compatible.asm set to current Grid Infrastructure (GI) version
• Provides access to latest features on availability and performance
• All disks have the same size (12.1.0.2+)
• All failure groups have the same number of disks (12.2)
• Improved availability when encountering disk failures (12.2, 18)
• Faster disk online and resync (18)
• compatible.rdbms >= 12.1.0.2
• Resync checkpoint: retain resync progress after interruption (12.1.0.2+)
• Reduction of the use of large extents and its fragmentation (11.2.0.4+)
2
31. 32
Program Agenda
Past and Present: a History of ASM
ASM Best Practices
Disk Offline and Online Enhancements
Rebalance Enhancements
1
2
3
4
32
32. 33
Faster Online
• Virtually Address Metadata (VAM)
• Formerly, ASM disk metadata was physically addressed on a disk and was not
mirrored on any other disk
• Now, ASM disk metadata is virtually addressed and is mirrored
• Compatible.asm >= 18.1
• Online improvements because of VAM:
• No longer need to reconstruct physically addressed metadata as part of
online. This operation was costly because it involved scanning all the file
metadata
• Reduce metadata full scan to an amount proportional to stale data
• Checkpointing: allow resync to resume progress if interrupted
3
33. 34
I/O Latency Capping
• Cell-side Hair-Trigger I/O Latency Capping
• When a disk fails to return any I/O after a timeout, pending I/Os will be
cancelled
• Reads will be returned back to ASM, which will read from a mirror
• Writes will be cached in the flash cache and acknowledged
• Compute-node I/O Latency Capping
• When a storage cell stops responding, I/Os to that cell will be cancelled
• Disconnect from the problem cell
• Reads will be redirected to the a mirror on another storage cell
• Writes will be written to remaining mirrors and will be acknowledged
once ASM offlines all disks in the storage cell that failed to respond
3
34. 35
Program Agenda
Past and Present: a History of ASM
ASM Best Practices
Disk Offline and Online Enhancements
Rebalance Enhancements
1
2
3
4
35
35. 36
Rebalance Phases
1. RESYNC
2. RESILVER
3. REBUILD – new in 12.2
4. BALANCE
5. PREPARE – new in 12.2
6. COMPACT
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REDUNDANCY
RESTORE
36. 37
WITH / WITHOUT Rebalance SQL
• Specify the list of phases to run
• SQL> ALTER DISKGROUP data REBALANCE WITH RESTORE POWER 10
• SQL> ALTER DISKGROUP data REBALANCE WITH RESTORE COMPACT
• RESTORE = RESYNC + RESILVER + REBUILD
• Specify the list of phases to defer
• SQL> ALTER DISKGROUP data REBALANCE WITHOUT COMPACT
• No phase specified = Run all phases
• SQL> ALTER DISKGROUP <dg> REBALANCE
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37. 39
Online Change in Rebalance Power
• MODIFY rebalance power (only change is power)
• Must specify same phases as the on-going rebalance
• On-going rebalance
• SQL> alter diskgroup data rebalance modify power 10
• New rebalance
• SQL> alter diskgroup data rebalance modify power 20
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38. 40
Pause/Resume/Restart Rebalance
• Greater control on rebalance
• Use MODIFY keyword with power 0 to pause rebalance
• SQL> ALTER DISKGROUP data REBALANCE modify power 0
• Use MODIFY keyword non-zero power to resume rebalance
• SQL> ALTER DISKGROUP data REBALANCE modify power 4
• Skip the MODIFY keyword to restart rebalance
• SQL> ALTER DISKGROUP data REBALANCE power 2
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39. 41
Rebalance Estimates
• Estimates for each phase computed in parallel
• Faster rebalance
• ARB-0 Process – rebalance work
• ARB-A Process (estimate slave) – rebalance estimates
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40. 42
HARD Check During Rebalance
• Prevents physical corruptions from spreading from disk to disk
• What happens if HARD check fails?
• ORA-00600 [kfk_iodone_invalid_buffer] (12.1.0.2DBBP, 12.2RU)
• Results in ORA-59035: HARDCHECK error during I/O (18.3 or later)
• Rebalance tries to continue until a number of failures occur, then ORA-
59035 (18.3 or later)
• Checks limited to major file types like datafile, online redo log,
archive log, backup files, etc. File types like temp files are
excluded from these checks.
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41. 43
Content.check – 19.2 ASM Feature
• Scrubs relocating extents during rebalance for physical
corruptions just like HARD check
• If a corruption is found and there is a good mirror side,
automatically repair from mirror side
• Throws ORA-00700:
[KFFSCRUBDUMPEXTENTSET_ONSUSPICIOUSBLKS] for root
cause analysis
• Rebalance will continue after the repair
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