This document provides an introduction to using Job Control Language (JCL) and the System Display and Search Facility (SDSF) on IBM mainframe systems. It explains the basic components of JCL, including the JOB, EXEC, and DD statements. It also describes how to create JCL procedures, override procedure statements, and use utilities and system libraries. The document concludes by explaining how SDSF allows users to monitor jobs, view outputs, and issue commands to the operating system.
The document provides an overview of Job Control Language (JCL) used to communicate with the IBM mainframe operating system. It describes the key components of JCL including JOB, EXEC and DD statements. JOB statements name a job and supply accounting/scheduling information. EXEC statements call programs for execution and can invoke cataloged procedures. DD statements define resources like input/output files used by the job. The document outlines the format, fields and common parameters used in each JCL statement type.
The document provides an overview of Job Control Language (JCL) which describes the work and resources required by jobs submitted to an operating system. It discusses the key JCL statements including JOB, EXEC and DD statements and covers their syntax and usage. The sessions outline the introduction to JCL and focus on specific statements like JOB, EXEC and DD as well as the job processing and execution overview.
JCL (Job Control Language) is used on IBM mainframes to instruct the operating system how to run batch jobs and start subsystems. It acts as an interface between application programming and the MVS Operating System. JCL is used for compiling and executing batch programs, controlling jobs, allocating files, sorting files, and more. JCL uses statements like JOB, EXEC, and DD to identify the job, specify execution parameters, and define file allocations respectively.
Here are the key steps to reorganize an HDAM IMS database:
1. Back up the database before starting the reorganization process. This provides a recovery point in case of errors.
2. Run the DBDGEN utility to generate a new DBD for the database. This will incorporate any schema changes.
3. Run the HD Reorganization Unload (DFSURGU0) utility to unload all segments from the database to a sequential file.
4. Run the HD Reorganization Reload (DFSURGL0) utility to reload the segments from the sequential file into a new database with the new DBD. This rebuilds the database in a more efficient structure.
5. Run
1) To access the TSO service at the University of Georgia, users must identify themselves by entering their USERID and password during the LOGON process.
2) The Interactive System Productivity Facility/Program Development Facility (ISPF/PDF) is a component of TSO that facilitates interaction with the TSO service. This guide describes how to use ISPF/PDF.
3) Key conventions used in this guide include showing commands in UPPERCASE and information the user provides in lowercase. "Next to" indicates the character position immediately to the right of the indicating arrow.
This document is a 2004 IBM presentation on the basic concepts of JCL (Job Control Language) for IBM mainframes. It was presented by Anil Kumar Bharti and consists of over 100 slides copyrighted by IBM covering introductory information about JCL, its purpose in scheduling and running jobs on IBM mainframe computers, basic JCL statement types like JOB, EXEC, DD, and common control statements. The presentation provides a high-level overview of JCL without going into detailed examples or code.
The document provides an example JCL used to run a COBOL program. It includes:
1) A JOB statement that identifies the job name, programmer, class, and priority.
2) A STEP statement specifying the COBOL program "COBPROG" to execute.
3) DD statements defining the input and output files for the COBOL program.
The document then explains each part of the JCL and how it will execute the COBOL program on the MVS operating system.
This document provides an overview of the COBOL programming language. It discusses the history and structure of COBOL, including its divisions, sections, paragraphs, and statements. Key concepts covered include data types, literals, variables, declarations, and the PROCEDURE division. The document also reviews data movement and manipulation statements like MOVE, arithmetic statements, conditional statements, and more.
The document provides an overview of Job Control Language (JCL) used to communicate with the IBM mainframe operating system. It describes the key components of JCL including JOB, EXEC and DD statements. JOB statements name a job and supply accounting/scheduling information. EXEC statements call programs for execution and can invoke cataloged procedures. DD statements define resources like input/output files used by the job. The document outlines the format, fields and common parameters used in each JCL statement type.
The document provides an overview of Job Control Language (JCL) which describes the work and resources required by jobs submitted to an operating system. It discusses the key JCL statements including JOB, EXEC and DD statements and covers their syntax and usage. The sessions outline the introduction to JCL and focus on specific statements like JOB, EXEC and DD as well as the job processing and execution overview.
JCL (Job Control Language) is used on IBM mainframes to instruct the operating system how to run batch jobs and start subsystems. It acts as an interface between application programming and the MVS Operating System. JCL is used for compiling and executing batch programs, controlling jobs, allocating files, sorting files, and more. JCL uses statements like JOB, EXEC, and DD to identify the job, specify execution parameters, and define file allocations respectively.
Here are the key steps to reorganize an HDAM IMS database:
1. Back up the database before starting the reorganization process. This provides a recovery point in case of errors.
2. Run the DBDGEN utility to generate a new DBD for the database. This will incorporate any schema changes.
3. Run the HD Reorganization Unload (DFSURGU0) utility to unload all segments from the database to a sequential file.
4. Run the HD Reorganization Reload (DFSURGL0) utility to reload the segments from the sequential file into a new database with the new DBD. This rebuilds the database in a more efficient structure.
5. Run
1) To access the TSO service at the University of Georgia, users must identify themselves by entering their USERID and password during the LOGON process.
2) The Interactive System Productivity Facility/Program Development Facility (ISPF/PDF) is a component of TSO that facilitates interaction with the TSO service. This guide describes how to use ISPF/PDF.
3) Key conventions used in this guide include showing commands in UPPERCASE and information the user provides in lowercase. "Next to" indicates the character position immediately to the right of the indicating arrow.
This document is a 2004 IBM presentation on the basic concepts of JCL (Job Control Language) for IBM mainframes. It was presented by Anil Kumar Bharti and consists of over 100 slides copyrighted by IBM covering introductory information about JCL, its purpose in scheduling and running jobs on IBM mainframe computers, basic JCL statement types like JOB, EXEC, DD, and common control statements. The presentation provides a high-level overview of JCL without going into detailed examples or code.
The document provides an example JCL used to run a COBOL program. It includes:
1) A JOB statement that identifies the job name, programmer, class, and priority.
2) A STEP statement specifying the COBOL program "COBPROG" to execute.
3) DD statements defining the input and output files for the COBOL program.
The document then explains each part of the JCL and how it will execute the COBOL program on the MVS operating system.
This document provides an overview of the COBOL programming language. It discusses the history and structure of COBOL, including its divisions, sections, paragraphs, and statements. Key concepts covered include data types, literals, variables, declarations, and the PROCEDURE division. The document also reviews data movement and manipulation statements like MOVE, arithmetic statements, conditional statements, and more.
This document provides an introduction to JCL (Job Control Language) including:
1. What JCL is and its basic syntax with JOB, EXEC, and DD statements.
2. The JOB statement identifies the start of a job. The EXEC statement identifies the program or procedure to run. The DD statement defines input/output resources.
3. Examples are provided for DD statements to define disk and tape datasets as well as instream data. Formats, dispositions, and other attributes can be specified.
This slide contains all the basic concepts of ISPF. It's giving the simple and easy step to get the knowledge of Interactive system productivity facility. If u like it then give me feedback on email anilbharti85@gmail.com Thanks v much.
A K Bharti
The document provides an overview of utilities used in the IBM Z/OS mainframe operating system. It discusses the objectives and agenda of a training course on IBM utilities. The first session covers the introduction and types of utilities, including dataset utilities, system utilities, and access method services. Common dataset utilities like IEFBR14, IEBGENER, IEBCOPY, and SORT are introduced. The document provides examples of using IEFBR14 to create and delete datasets, and examples of using IEBCOPY and IEBGENER to copy datasets and work with partitioned dataset members.
The document provides an overview of the initial program load (IPL) process in z/OS. It describes how the bootstrap loads the operating system from disk into memory and passes control to the IPL control program IEAIPL00. This program initializes the system environment and loads initialization programs that initialize system areas, address spaces, and subsystems to start the operating system. The document also discusses system parameters and parmlib members that control the initialization process.
This chapter discusses Job Control Language (JCL) and the Display and Search Facility (SDSF) in 3 sentences: It introduces JCL, which uses statements like JOB, EXEC, and DD to describe programs, inputs, and outputs for execution on the mainframe. It also explains how to check job outputs using SDSF, which allows viewing and searching system logs, monitoring jobs, and controlling job execution order and output printing. Key topics covered include basic JCL coding, procedures, concatenation, continuation, and using SDSF to view job status and outputs.
Maintec Technologies provides affordable access to latest Mainframe infrastructure for development, training, additional short term capacity increases and outsourcing needs. Leverage our Mainframe infrastructure, without investing the time, expense and manpower it would take to build your own!.
IEBCOPY is a utility that can copy members between PDS datasets. It allows copying all members, selected members, or excluding specific members. It can also replace or rename members during the copy process. The utility can also compress a PDS dataset to free unused space. Example JCL is provided showing how to copy all members, select specific members, exclude members, replace and rename members, and compress a dataset.
Mainframe jcl exec and dd statements part - 3janaki ram
EXEC STATEMENT(EXEC)
EXEC Statement is used to identify program name or procedure name.
Maximum we can code 255 EXEC statements in a JOB.
In EXEC statement has two kinds of parameters
Position parameter Keyword parameter
PGM TIME , COND
PROC REGION , PARM
If you not mention any thing default it takes PROC
PGM
This is a positional parameter which must be coded after EXEC with one blank. This parameter indicates the name of program (or) procedure name
Syntax
//STEPNAME EXEC PGM=REPORT (OR)
PROC = PROCEDURE NAME
PARM
It is keyword parameter and it is mainly used for passing the data to another program.
To pass input to Application program
To invoke complier option.
This is a keyword parameter at activity / step level must be coded with exec operand after PGM parameter.
This parameter allows MAX(100) characters.
To receive PARM parameter data, Cobol program must be coded with “Procedure Division Using Parameter ” option.
These parameters must be declared in the linkage section.
DATA DESCRIPTOR STATEMENT ( DD STMT)
It is used to identify files( input and output ) used in JCL
DD name act as a bridge b/w Cobol program and execution JCL
In DD statement has two kinds of parameters.
Position Parameter Keyword Parameter
* DSN,DISP
DATA SPACE,UNIT
DUMMY DCB,VOLUME
*
Position parameter at DD level used with SYSIN to pass data to Cobol programs this is known as In stream data any number of records can be passed to the program.
In stream data is used to pass values from JCL to Cobol dynamically.
To accept the values in Cobol program, we should have equivalent accept verbs.
Syntax
//SYSIN DD * ------- Entry of in stream data
100
200
/* ---------------------- End of in stream data
DATA
We can pass any thing to another program including special character
Syntax
//SYSIN DD DATA
100
/*
200
/*
DUMMY
All files are treated as End of the file
Syntax
//SYSIN DD DUMMY
NOTE
There is no input to the application all input files treated as End of the file.
DSN
Through DSN we can refer temporary / permanent file
Is a physical space or file where the records will be stored.
DISP
DISP parameter is used to identify the mode of the file.
DISP= ( STATUS, NORMAL , ABNORMAL )
TERMINATION TERMINATION
NEW DELETE DELETE
OLD KEEP KEEP
SHR CATLG CATLG
MOD UNCATLG UNCATLG
NEW Creating the data set first time
OLD Already created accessing the data set all resources are allocated exclusively . No other user can until is released by the current user. If dataset is not existing this creates.
SHR The data set can be accessed by multiple users at a time.
MOD Appending the records to the existing record
NOTE If the dataset is not existing , then MOD is assumed as NEW and writes records to the dataset.
1. The document discusses various IBM mainframe utility programs that are used to perform tasks related to scheduling, datasets, and systems. Some examples provided include IEFBR14, IEBCOMPR, IEBCOPY, IEBGENER, and IDCAMS.
2. Many IBM utilities were originally developed by users and then modified by IBM. They typically use common JCL statements like SYSIN, SYSUT1, SYSUT2, and SYSPRINT.
3. The utilities covered in the document include scheduler utilities, dataset utilities, and system utilities that can be used for tasks like copying, compressing, comparing, updating, and managing datasets and catalogs.
OPC and TWS are IBM mainframe job scheduling and workload management tools. OPC consists of a controller and trackers that schedule jobs across OS/390, AS/400, UNIX, Windows NT and other systems. TWS includes a master domain manager and agents that create production plans and schedule jobs even if communication is lost. Both tools can be managed through a single Java GUI called the Job Scheduling Console, providing centralized scheduling across mainframe and distributed environments.
Resource Access Control Facility (RACF) in MainframesAayush Singh
This document provides an overview of RACF (Resource Access Control Facility), an IBM product that controls access to system resources on z/OS. It describes the different types of profiles (user, group, dataset, generic) stored in the RACF database and the commands used to manage them. Authorities like SPECIAL, OPERATIONS, and AUDITOR are assigned to users and groups. RACF enforces access based on these profiles and can revoke or protect access.
20 DFSORT Tricks For Zos Users - Interview QuestionsSrinimf-Slides
This document provides examples of JCL code using DFSORT to perform various data manipulation tasks like date conversions, splitting files, joining files, and generating reports. Code examples show how to use DFSORT options like INREC, OUTREC, SUM, JOINKEYS, and OUTFIL to transform and extract data in various ways.
SMP/E is a tool used to install and maintain software on z/OS systems. It controls changes at the element level, selecting proper levels of elements to install from potential changes and calling system utilities to install the changes. SMP/E manages this process through zones like the Global, Target, and Distribution zones. It uses terminology like SYSMODs, elements, and FMIDs to track changes and prerequisites for installation. The basic process flow involves receiving updates, applying them to the Target zone, testing, then accepting them to the Distribution zone.
Here are a few ways to specify a dummy VSAM dataset in JCL:
1. Specify DISP=(NEW,PASS) to allocate a new dummy VSAM dataset that will be deleted at the end of the job.
2. Specify DISP=(MOD,PASS) to use an existing dummy VSAM dataset if it already exists, or create a new one.
3. Specify AMP='AMORG' to indicate to the system that this is a VSAM file even though it may not physically exist. The system will treat it like a VSAM file for authorization checking.
4. Omit the DD statement entirely for files that are only used for authorization checking and not actually accessed by the program.
IMS DC is a hierarchical database management system supplied by IBM that runs on mainframe computers. It has two main components: Data Base (DB) processing and Data Communication (DC) processing. DC handles information in the form of messages that flow between remote terminals and application programs. Major kinds of online programs that can be written for IMS DC include inquiry programs, data entry programs, maintenance programs, and menu programs.
The document describes various DB2 online utilities including UNLOAD, LOAD, REBUILD INDEX, COPY, RECOVER, RUNSTATS, MODIFY RECOVERY, QUIESCE, and REORG. These utilities perform functions like unloading and loading data, rebuilding indexes, taking image copies of data, recovering data to a prior point in time, updating catalog statistics, and reorganizing tablespaces.
Z4R: Intro to Storage and DFSMS for z/OSTony Pearson
This session covers basic storage concepts for z/OS operating system with examples for Flash, Disk and Tape devices and how to use DFSMS policy-based management. Presented at IBM TechU in Johannesburg, South Africa September 2019
Top jcl interview questions and answers job interview tipsjcltutorial
You'll likely be asked difficult questions during the interview. Preparing the list of likely questions in advance will help you easily transition from question to question.
The document provides an overview of VSAM (Virtual Storage Access Method) concepts including:
- VSAM supports three types of data access and provides data protection and cross-system compatibility.
- VSAM datasets can be organized as entry-sequenced, key-sequenced, relative record, variable relative record, or linear.
- VSAM uses catalogs to store metadata and manages data storage using control intervals, control areas, and record clustering.
- Alternate indexes and spanned records allow flexible data access and storage of long records.
The document discusses the responsibilities of a z/OS system programmer including:
- Installing, customizing, and maintaining the operating system software
- Configuring system libraries and parameters
- Managing I/O devices, security, performance, and system availability
It describes key tasks like IPLing the system, defining the LNKLST, and modifying system parameters in PARMLIB.
IBM Introduction to New Mainframe_ z-OS Basics - Chap. 16 - Topics in z-OS Sy...NicholasVanHaiVu
The document discusses the responsibilities of a z/OS system programmer including:
- Installing, customizing, and maintaining the operating system software
- Configuring system libraries and parameters
- Managing I/O devices, security, performance, and system availability
It describes key tasks like IPLing the system, defining the LNKLST, and modifying system parameters in PARMLIB.
This document provides an introduction to JCL (Job Control Language) including:
1. What JCL is and its basic syntax with JOB, EXEC, and DD statements.
2. The JOB statement identifies the start of a job. The EXEC statement identifies the program or procedure to run. The DD statement defines input/output resources.
3. Examples are provided for DD statements to define disk and tape datasets as well as instream data. Formats, dispositions, and other attributes can be specified.
This slide contains all the basic concepts of ISPF. It's giving the simple and easy step to get the knowledge of Interactive system productivity facility. If u like it then give me feedback on email anilbharti85@gmail.com Thanks v much.
A K Bharti
The document provides an overview of utilities used in the IBM Z/OS mainframe operating system. It discusses the objectives and agenda of a training course on IBM utilities. The first session covers the introduction and types of utilities, including dataset utilities, system utilities, and access method services. Common dataset utilities like IEFBR14, IEBGENER, IEBCOPY, and SORT are introduced. The document provides examples of using IEFBR14 to create and delete datasets, and examples of using IEBCOPY and IEBGENER to copy datasets and work with partitioned dataset members.
The document provides an overview of the initial program load (IPL) process in z/OS. It describes how the bootstrap loads the operating system from disk into memory and passes control to the IPL control program IEAIPL00. This program initializes the system environment and loads initialization programs that initialize system areas, address spaces, and subsystems to start the operating system. The document also discusses system parameters and parmlib members that control the initialization process.
This chapter discusses Job Control Language (JCL) and the Display and Search Facility (SDSF) in 3 sentences: It introduces JCL, which uses statements like JOB, EXEC, and DD to describe programs, inputs, and outputs for execution on the mainframe. It also explains how to check job outputs using SDSF, which allows viewing and searching system logs, monitoring jobs, and controlling job execution order and output printing. Key topics covered include basic JCL coding, procedures, concatenation, continuation, and using SDSF to view job status and outputs.
Maintec Technologies provides affordable access to latest Mainframe infrastructure for development, training, additional short term capacity increases and outsourcing needs. Leverage our Mainframe infrastructure, without investing the time, expense and manpower it would take to build your own!.
IEBCOPY is a utility that can copy members between PDS datasets. It allows copying all members, selected members, or excluding specific members. It can also replace or rename members during the copy process. The utility can also compress a PDS dataset to free unused space. Example JCL is provided showing how to copy all members, select specific members, exclude members, replace and rename members, and compress a dataset.
Mainframe jcl exec and dd statements part - 3janaki ram
EXEC STATEMENT(EXEC)
EXEC Statement is used to identify program name or procedure name.
Maximum we can code 255 EXEC statements in a JOB.
In EXEC statement has two kinds of parameters
Position parameter Keyword parameter
PGM TIME , COND
PROC REGION , PARM
If you not mention any thing default it takes PROC
PGM
This is a positional parameter which must be coded after EXEC with one blank. This parameter indicates the name of program (or) procedure name
Syntax
//STEPNAME EXEC PGM=REPORT (OR)
PROC = PROCEDURE NAME
PARM
It is keyword parameter and it is mainly used for passing the data to another program.
To pass input to Application program
To invoke complier option.
This is a keyword parameter at activity / step level must be coded with exec operand after PGM parameter.
This parameter allows MAX(100) characters.
To receive PARM parameter data, Cobol program must be coded with “Procedure Division Using Parameter ” option.
These parameters must be declared in the linkage section.
DATA DESCRIPTOR STATEMENT ( DD STMT)
It is used to identify files( input and output ) used in JCL
DD name act as a bridge b/w Cobol program and execution JCL
In DD statement has two kinds of parameters.
Position Parameter Keyword Parameter
* DSN,DISP
DATA SPACE,UNIT
DUMMY DCB,VOLUME
*
Position parameter at DD level used with SYSIN to pass data to Cobol programs this is known as In stream data any number of records can be passed to the program.
In stream data is used to pass values from JCL to Cobol dynamically.
To accept the values in Cobol program, we should have equivalent accept verbs.
Syntax
//SYSIN DD * ------- Entry of in stream data
100
200
/* ---------------------- End of in stream data
DATA
We can pass any thing to another program including special character
Syntax
//SYSIN DD DATA
100
/*
200
/*
DUMMY
All files are treated as End of the file
Syntax
//SYSIN DD DUMMY
NOTE
There is no input to the application all input files treated as End of the file.
DSN
Through DSN we can refer temporary / permanent file
Is a physical space or file where the records will be stored.
DISP
DISP parameter is used to identify the mode of the file.
DISP= ( STATUS, NORMAL , ABNORMAL )
TERMINATION TERMINATION
NEW DELETE DELETE
OLD KEEP KEEP
SHR CATLG CATLG
MOD UNCATLG UNCATLG
NEW Creating the data set first time
OLD Already created accessing the data set all resources are allocated exclusively . No other user can until is released by the current user. If dataset is not existing this creates.
SHR The data set can be accessed by multiple users at a time.
MOD Appending the records to the existing record
NOTE If the dataset is not existing , then MOD is assumed as NEW and writes records to the dataset.
1. The document discusses various IBM mainframe utility programs that are used to perform tasks related to scheduling, datasets, and systems. Some examples provided include IEFBR14, IEBCOMPR, IEBCOPY, IEBGENER, and IDCAMS.
2. Many IBM utilities were originally developed by users and then modified by IBM. They typically use common JCL statements like SYSIN, SYSUT1, SYSUT2, and SYSPRINT.
3. The utilities covered in the document include scheduler utilities, dataset utilities, and system utilities that can be used for tasks like copying, compressing, comparing, updating, and managing datasets and catalogs.
OPC and TWS are IBM mainframe job scheduling and workload management tools. OPC consists of a controller and trackers that schedule jobs across OS/390, AS/400, UNIX, Windows NT and other systems. TWS includes a master domain manager and agents that create production plans and schedule jobs even if communication is lost. Both tools can be managed through a single Java GUI called the Job Scheduling Console, providing centralized scheduling across mainframe and distributed environments.
Resource Access Control Facility (RACF) in MainframesAayush Singh
This document provides an overview of RACF (Resource Access Control Facility), an IBM product that controls access to system resources on z/OS. It describes the different types of profiles (user, group, dataset, generic) stored in the RACF database and the commands used to manage them. Authorities like SPECIAL, OPERATIONS, and AUDITOR are assigned to users and groups. RACF enforces access based on these profiles and can revoke or protect access.
20 DFSORT Tricks For Zos Users - Interview QuestionsSrinimf-Slides
This document provides examples of JCL code using DFSORT to perform various data manipulation tasks like date conversions, splitting files, joining files, and generating reports. Code examples show how to use DFSORT options like INREC, OUTREC, SUM, JOINKEYS, and OUTFIL to transform and extract data in various ways.
SMP/E is a tool used to install and maintain software on z/OS systems. It controls changes at the element level, selecting proper levels of elements to install from potential changes and calling system utilities to install the changes. SMP/E manages this process through zones like the Global, Target, and Distribution zones. It uses terminology like SYSMODs, elements, and FMIDs to track changes and prerequisites for installation. The basic process flow involves receiving updates, applying them to the Target zone, testing, then accepting them to the Distribution zone.
Here are a few ways to specify a dummy VSAM dataset in JCL:
1. Specify DISP=(NEW,PASS) to allocate a new dummy VSAM dataset that will be deleted at the end of the job.
2. Specify DISP=(MOD,PASS) to use an existing dummy VSAM dataset if it already exists, or create a new one.
3. Specify AMP='AMORG' to indicate to the system that this is a VSAM file even though it may not physically exist. The system will treat it like a VSAM file for authorization checking.
4. Omit the DD statement entirely for files that are only used for authorization checking and not actually accessed by the program.
IMS DC is a hierarchical database management system supplied by IBM that runs on mainframe computers. It has two main components: Data Base (DB) processing and Data Communication (DC) processing. DC handles information in the form of messages that flow between remote terminals and application programs. Major kinds of online programs that can be written for IMS DC include inquiry programs, data entry programs, maintenance programs, and menu programs.
The document describes various DB2 online utilities including UNLOAD, LOAD, REBUILD INDEX, COPY, RECOVER, RUNSTATS, MODIFY RECOVERY, QUIESCE, and REORG. These utilities perform functions like unloading and loading data, rebuilding indexes, taking image copies of data, recovering data to a prior point in time, updating catalog statistics, and reorganizing tablespaces.
Z4R: Intro to Storage and DFSMS for z/OSTony Pearson
This session covers basic storage concepts for z/OS operating system with examples for Flash, Disk and Tape devices and how to use DFSMS policy-based management. Presented at IBM TechU in Johannesburg, South Africa September 2019
Top jcl interview questions and answers job interview tipsjcltutorial
You'll likely be asked difficult questions during the interview. Preparing the list of likely questions in advance will help you easily transition from question to question.
The document provides an overview of VSAM (Virtual Storage Access Method) concepts including:
- VSAM supports three types of data access and provides data protection and cross-system compatibility.
- VSAM datasets can be organized as entry-sequenced, key-sequenced, relative record, variable relative record, or linear.
- VSAM uses catalogs to store metadata and manages data storage using control intervals, control areas, and record clustering.
- Alternate indexes and spanned records allow flexible data access and storage of long records.
The document discusses the responsibilities of a z/OS system programmer including:
- Installing, customizing, and maintaining the operating system software
- Configuring system libraries and parameters
- Managing I/O devices, security, performance, and system availability
It describes key tasks like IPLing the system, defining the LNKLST, and modifying system parameters in PARMLIB.
IBM Introduction to New Mainframe_ z-OS Basics - Chap. 16 - Topics in z-OS Sy...NicholasVanHaiVu
The document discusses the responsibilities of a z/OS system programmer including:
- Installing, customizing, and maintaining the operating system software
- Configuring system libraries and parameters
- Managing I/O devices, security, performance, and system availability
It describes key tasks like IPLing the system, defining the LNKLST, and modifying system parameters in PARMLIB.
Learn about the latest generation of IBM System z servers, the IBM System z9 Enterprise Class (z9 EC, formerly the IBM System z9 109 (z9-109)) and the IBM System z9 Business Class (z9 BC), are designed to provide an advanced combination of reliability, availability, security, scalability, and virtualization features. The good news is all supported z/OS releases can run on a z9 EC or z9 BC server (all supported z/OS.e releases can run on a z9 BC server). Similarly, all supported z/OS and z/OS.e releases can participate in a sysplex that has a CF or operating system image on a z9 server. The even better news is that most customers are well positioned to use the new server. For more information on IBM System z, visit http://ibm.co/PNo9Cb.
Visit the official Scribd Channel of IBM India Smarter Computing at http://bit.ly/VwO86R to get access to more documents.
The document announces the launch of the new IBM zEnterprise BC12 (zBC12) server. Some key highlights include a 36% increase in processing capacity through 6 central processors running at 4.2GHz each, 512GB of memory, and system I/O bandwidth of 128GB/sec. The zBC12 continues IBM's heritage of CMOS mainframe technology and supports new capabilities like zEDC Express for data compression, 10GbE RoCE Express for high-speed networking, and OSA Express 5S for upgraded I/O adapters.
This document discusses database transaction logging and concurrency control in DB2. It covers topics such as locks, isolation levels, deadlocks, snapshots, and transaction logging. It provides information on DB2's use of row-level and table-level locks, lock modes, lock escalation, lock monitoring using snapshots, and the two logging methods of circular logging and archival logging.
The document provides an overview of DB2 and discusses key concepts such as instances, databases, tablespaces, and recovery. It describes how to install and configure DB2, create instances and databases, load and move data between databases, and perform backups and recovery. Examples are given of commands used to create tablespaces and load data. The document also mentions tools for visualizing queries and monitoring performance.
Cell Technology for Graphics and VisualizationSlide_N
The document discusses Cell technology for graphics and visualization. It provides an overview of the Cell architecture including its Power Processor Element (PPE) and Synergistic Processor Elements (SPEs). The PPE handles operating system tasks while the SPEs provide computational performance. The document outlines programming models for the Cell including function offload, application specific accelerators, computational acceleration, streaming, and a shared memory multiprocessor model. It also discusses heterogeneous threading and a single source compiler approach.
IBM Systems Technical Symposium Melbourne, 2015Filipe Miranda
IBM Systems Technical Symposium Melbourne, 2015 - this slide deck will cover z IBM Systems and IBM Power Systems news from Red Hat. This is a technical deck that shows examples of how to exploit LUN auto scanning when using FCP with NPIV and CPACF cryptography. As for Power Systems it covers RHEV for Power and RHEL LE for Power Systems.
Strategy and best practice for modern RPGAlemanalfredo
This document provides strategies and best practices for modernizing RPG code, including using data structures for I/O, passing parameters with options like *TRIM and *STRING, avoiding the RPG cycle by using linear main procedures, working with partial arrays, and using naming conventions to improve readability. It recommends qualifying names, using alias names for files, and bulletproofing copy files to avoid mismatches between modules.
IMS Application Development and Simplification - Phoenix UG - June 19th, 2014Jeff Pearce
IMS Application Development and Simplification
Imagine being brand new to the mainframe and sitting down to write and test your first IMS application - ISPF, TSO, COBOL, ASCII/EBCDIC, dependent regions, deployment, message queues, etc. And somewhere in there you need to actually write a program. Learn how IBM's newest suite of Eclipse-based tools eliminates these environment barriers and give you the tools you need to be comfortable and productive on Day 1. We will present an integrated set of tools, with a common look and feel, that simplify the development life cycle of your IMS Application Program. We will demonstrate how the IMS Enterprise Suite Explorer, Rational Developer for z, IBM Debug Tool and the IMS Batch Terminal Simulator (BTS) are modernizing application development.
This document discusses managing Oracle database instances. It covers starting and stopping the Oracle database and components using Oracle Enterprise Manager. It also covers accessing a database using SQL*Plus, modifying initialization parameters, the stages of database startup and shutdown options, and viewing the alert log and dynamic performance views.
Cell Broadband EngineTM: and Cell/B.E. based blade technologySlide_N
The document discusses the Cell Broadband Engine (CBE), a multi-core microprocessor created by Sony, Toshiba, and IBM. It provides an overview of CBE technology and applications, including that it was originally created for the PlayStation 3 but has potential in other areas like servers. The document also discusses IBM's continued development of CBE-based systems and software tools to support programming for heterogeneous multi-core architectures.
This document provides source code for a simulation block called Reactor that models a reactor process for a training course on PCS 7. The block contains input and output variables to control filling valves, a mixer motor, and monitor temperature and level values. The code defines the block attributes, declares the input, in-out, and output variables, and contains the algorithm to simulate the reactor process over time based on the input conditions and parameter values provided.
This document summarizes a presentation about trends and directions for Db2 for z/OS. It discusses Db2 for z/OS's strategy of investing in AI, cloud, and analytics while simplifying and modernizing. It provides an overview of recent releases of Db2 12 including new features and function levels delivered through continuous delivery. It also discusses future potential features such as Db2 AI for z/OS and integration with IBM Cloud Pak for Data.
DB2 commands are used to execute database administration functions and control the DB2 operational environment. The document discusses different types of DB2 commands, including DSN commands, DB2 commands, IMS commands, and CICS attachment facility commands. It also describes the structure of DB2 commands and the scopes of different commands, such as member, group, or both depending on options.
Visão geral do hardware do servidor System z e Linux on z - Concurso MainframeAnderson Bassani
Apresentação realizada no evento de premiação do Concurso Mainframe 2014 que foi realizado em São Paulo, IBM Tutóia. Tópicos apresentados incluíram: hardware System zEC12 e zBC12, Linux on z, O que o System z faz que outras plataformas não fazem e um caso real de uma empresa desenvolvedora de Software.
I Didn't Know You Could Do That with zOS.pdfMarna Walle
1. The document discusses several new and updated features in recent z/OS releases: controlling GDGE maximum limits, using z/OS UNIX commands on MVS data sets, sending redacted dumps from z/OSMF Incident Log using Data Privacy for Diagnostics, installing individual products using z/OSMF portable software instances, viewing SNA application activity via the Function Registry, managing resource shortages with JES2's Emergency Subsystem, and a planned z/OS UUID capability.
2. The topics provide insights into system usage and improvements for problem diagnosis, software management, and urgent system tasks.
3. Users can benefit from these features to better understand their systems, install software easily, and respond to
The document discusses High Availability Disaster Recovery (HADR) in DB2. It describes how HADR uses log shipping to replicate transactions from a primary database to a standby database. HADR supports three synchronization modes - SYNC, NearSync and Async - which determine how transaction logs are replicated. The document provides steps for setting up and configuring HADR, including required database parameters. It also discusses using reorgchk and runstats utilities to check for table/index reorganization needs and update database statistics.
The document discusses two DB2 utilities: db2top and db2pd. Db2top allows users to take periodic snapshots of the system and identify any problems during a period of time. Db2pd provides options to display information about transactions, table spaces, statistics, and configurations for monitoring and troubleshooting databases. It can be used to show operating system information, instance details, and details of a specific database.
Three Key Concepts for Understanding JSR-352: Batch Programming for the Java ...timfanelli
In this presentation, Tim Fanelli provides an introduction to JSR352 programming, and builds a simple application utilizing the JSR 352 chunk processing model.
The sample program presented may be downloaded here:
https://www.dropbox.com/s/55fsjt4ylny95hc/MySampleBatch.jar
Or, email Tim Fanelli - the contact information is on slide 3!