DBCTL interface control program exit XXDFA

When invoked
By an active CICS® when its connection to DBCTL fails. Your exit program is invoked after the active CICS has informed the alternate CICS of the failure.
Exit-specific parameters
UEPDBXR
Address of CICS XRF information for use with DBCTL. The CICS XRF information can be mapped using the DSECT DFHDXUEP.
Return codes
UERCNOAC
Take no action.
UERCSWCH
Switch to the alternate DBCTL.
UERCABNO
Abend CICS without a dump.
UERCABDU
Abend CICS with a dump.
XPI calls
TRANSACTION_DUMP must not be used.

Related concepts
Overview -- what is a global user exit?
Overview of the XPI
Global user exit XPI examples, showing the use of storage
Related tasks
Writing global user exit programs
Making an XPI call
Related reference
List of global user exit points
The XPI functions
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