Abend Handling

CA Datacom CICS Services handles all abend recovery for application tasks.

Standard Method

When a task that issued a CA Datacom/DB request terminates abnormally, standard CA Datacom CICS Services abend processing issues a CA Datacom/DB ROLBK (Rollback Transaction) command, in which case you are not required to code any special abend handling function for your applications.

Alternative Methods

If the standard method does not meet your needs or a software application package uses an abend handler, observe the following guidelines:

Any CA Datacom/DB request issued by the abend handling routine should use a different Request Area for debugging purposes.
Warning A DC16 abend results if a CA Datacom/DB request is issued in an abend handling condition from a force-purge of an active CA Datacom/DB request. We therefore do not recommend that abend handlers be allowed to issue CA Datacom/DB requests.
If the abend handler routine can correct the cause of the abend, the application can resume processing as if the abend never occurred.
Use the DBUTLTY COMM REQABORT option to cancel a task that is waiting for a response from CA Datacom/DB. This utility function causes CA Datacom/DB to respond to the CICS task and place a return code of 45 in the Request Area. (For details on this DBUTLTY function, see the CA Datacom/DB DBUTLTY Reference Guide.)

This section contains the following topics:

Using an Abend Handler

Using a CEMT Force-Purge Transaction

Using CEMT to Cancel an Active Task