IBM SC34-7012-01 manual Fc/Rls, Recovery, Dbctl, v Receipt of a syncpoint request, Managers TD

vManaging the state, and controlling the execution, of each UOW

vCoordinating UOW-related changes during syncpoint processing for recoverable resources

vCoordinating UOW-related changes during restart processing for recoverable resources

vCoordinating recoverable conversations to remote nodes

vTemporarily suspending completion (shunting), and later resuming completion (unshunting), of UOWs that cannot immediately complete commit or backout processing because the required resources are unavailable, because of system, communication, or media failure

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Figure 3. CICS recovery manager and resources it works withManaging the state of each unit of work

The CICS recovery manager maintains, for each UOW in a CICS region, a record of the changes of state that occur during its lifetime.

Typical events that cause state changes include:vCreation of the UOW, with a unique identifiervPremature termination of the UOW because of transaction failure

vReceipt of a syncpoint request

vEntry into the indoubt period during two-phase commit processing (see the CICS Transaction Server for z/OS Glossary for a definition of two-phase commit)

18CICS TS for z/OS 4.1: Recovery and Restart Guide