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Roger Strycova
Roger Strycova

Reputation: 109

READ for UPDATE in CICS

If I use READ for UPDATE in reading a record from a file without a subsequent DELETE, REWRITE, UNLOCK, or SYNCPOINT command. Will something happen to the record being read?

Upvotes: 0

Views: 783

Answers (1)

Leigh Compton
Leigh Compton

Reputation: 455

Nothing happens to the record itself. A lock will be held on the record (and maybe on the control interval) until the DELETE, REWRITE, UNLOCK, or SYNCPOINT is issued. See https://www.ibm.com/docs/en/cics-ts/5.6?topic=summary-read for the various locks that will be held based on the type of file and the access mode. NOTE that a SYNCPOINT will be issued automatically at end of task. While it's a poor programming practice to fail to issue a command that will release the lock, CICS will take care of things at end of task.

Upvotes: 3

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