Transaction management and recoverable resource manager services

 

Transaction management and recoverable resource manager services (RRS) is a z/OS facility to provide two-phase syncpoint support across participating resource managers. An application can update recoverable resources managed by various z/OS resource managers such as WebSphere MQ and DB2, and then commit or back out these updates as a single unit of work. RRS provides the necessary unit-of-work status logging during normal execution, coordinates the syncpoint processing, and provides appropriate unit-of-work status information during subsystem restart.

WebSphere MQ for z/OS RRS participant support enables WebSphere MQ applications in the batch, TSO, and DB2 stored procedure environments to update both WebSphere MQ and non-WebSphere MQ resources (for example, DB2) within a single logical unit of work. For information about RRS participant support, see MVS™ Programming: Resource Recovery.

Your WebSphere MQ application can use either MQCMIT and MQBACK or the equivalent RRS calls, SRRCMIT and SRRBACK. See RRS batch adapter for more information.

• RRS availability
  

• DB2 stored procedures
  

 

Parent topic:

Syncpoints in z/OS batch applications

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