z/OS DFSMSdfp Checkpoint/Restart
Previous topic |
Next topic
|
Contents
|
Contact z/OS
|
Library
|
PDF
Contents (exploded view)
z/OS DFSMSdfp Checkpoint/Restart
SC23-6862-00
Abstract for DFSMSdfp Checkpoint/Restart
z/OS Version 2 Release 1 summary of changes
Introduction
Components
CHKPT Macro Instruction
End-of-Volume Exit Routine
Checkpoint at End-of-Volume Facility
Restart Definition (RD) Parameter
RESTART Parameter
SYSCHK DD Statement
SYSCKEOV DD Statement
Dependencies
Controlled Use of Checkpoints
Specification of Codes Eligible for Restart
Job Journal Requirements
User Data Set Security
Checkpoint Data Set Security
Coding a Checkpoint
When to Code a Checkpoint
Checkpoint at End-of-Volume
CHKPT at EOV JCL Parameter
SYSCKEOV DD Statement
Checkpoint in Exit Routines
Coding the DCB for a Checkpoint Data Set
Required DCB Parameters
DCB Options
Notes on the DCB for a Checkpoint Data Set
Coding the DD Statement for a Checkpoint Data Set
Notes on the DD Statement
Using Checkpoint Data Sets
Storage Estimates for Checkpoint Data Sets
Fragmented Storage
How Checkpoint Entries Are Written
Unopened DCB Passed to Checkpoint
Opened DCB Passed to Checkpoint
DDNAME Passed to Checkpoint
General Considerations
How to Ensure Restart with Sequential Checkpoint Data Sets
How Checkpoint Entries Are Identified
Coding the CHKPT Macro Instruction
CHKPT Return Codes
Use of CHKPT with Other Macro Instructions
ATTACH
EXTRACT
FEOV
IMGLIB
PCLINK
SETDEV
SETPRT
STIMER
WTOR
Canceling a Checkpoint
Serially Reusable Resources
Requesting Serially Reusable Resources
Tape Volume DEQ at Demount
Special Operating System Features
VIO Data Sets
Dynamic Allocation and Dynamically Concatenated Data Sets
Shared Resources
Cross-Memory Support Restrictions
Data Spaces
Name/Token Services
Requesting Restart
Types of Restart
Automatic Restart
Operator Message Sequence
Operator Considerations
How to Request Automatic Checkpoint/Restart
Automatic Step Restart
How a Step Restart Is Initiated
How Data Sets Being Extended Are Handled during Automatic Step Restart
DISP=MOD
OPEN EXTEND or OUTINX
JCL Requirements and Restrictions on Automatic Restart
Resource Variations Allowed in Automatic Restart
How the System Works at Automatic Restart
How Data Set Disposition Is Determined
How the Job Is Reinterpreted
Deferred Restart
Message Sequence
Operator Considerations
Deferred Step Restart
JCL Requirements and Restrictions on Deferred Step Restart
Resource Variations Allowed in Deferred Step Restart
Deferred Checkpoint/Restart
JCL Requirements and Restrictions on Deferred Checkpoint/Restart
Resource Variations Allowed in a Deferred Checkpoint/Restart
System Restrictions for Deferred Checkpoint/Restart
How the System Works during a Deferred Checkpoint/Restart
Coding the RD and RESTART Parameters
RD Parameter
RESTART Parameter
SYSCHK DD Statement
Checkpoint/Restart Processing
Notes for User Data Sets
BDAM Data Sets
Extended Format Data Sets
Large Format Data Sets
Generation Data Sets
Graphics Data Sets
Multivolume Data Sets
Partitioned Data Sets (PDSs)
Adding Members
Updating Members
Deleting Members
Partitioned Data Sets Extended (PDSEs)
SMS-Managed Sequential Data Sets
Card Readers
SYSABEND or SYSUDUMP Data Sets
SYSIN Data Sets
SYSOUT Data Sets
Automatic Restart
Deferred Checkpoint/Restart
TCAM Data Sets
Temporary Data Sets
VSAM Data Sets
Catalog Updates
Use of Hiperbatch
The AMP Parameter
VSAM Data Set Types
Key-Sequenced Data Sets
Entry-Sequenced Data Sets
Relative Record Data Sets
Work Data Sets
Notes for Tape Labels and Files
VSE Tape Files
ISO/ANSI Tape Labels
Nonstandard Labels
Bypass Label Processing (BLP)
Automated Tape Library
File Protection
Tape Label Verification
Repositioning and Preserving the Contents of Data Sets
Recording Data Set Positioning
Buffering of Data Set Records
Preserving Data Set Contents
Allocating Devices during Deferred Checkpoint/Restart
Handling Checkpoint/Restart Errors
I/O errors
Internal Errors
User Errors
Using Checkpoint/Restart with Other Programs
Job and Job Step Accounting
Job Step Time Limit
Completion of Step or Job Termination at System Restart
JES3
COBOL
DFSORT™
PL/I
Virtual Fetch
Checkpoint/Restart Codes
Return Codes
Reason Codes
Modules and Return Codes for IHJ Messages
End-of-Volume Checkpoint Routine
Trademarks
Copyright IBM Corporation 1990, 2014
z/OS DFSMSdfp Checkpoint/Restart
z/OS DFSMSdfp Checkpoint/Restart
Copyright IBM Corporation 1990, 2014
