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DFH$PCTA can be extended for transaction isolation.
Related concepts
“The transaction-abend sample exit program” on page 24
Exit XPCABND
XPCABND is invoked after a transaction abend and before a transaction dump call:
you can use it to suppress the dump.
When invoked
After a transaction abend and before a transaction dump call is made.
Exit-specific parameters
UEPPCDS
Address of a storage area that contains program-related and
terminal-related information. The storage area is mapped by the
DSECT DFHPCUE.
When XPCABND is invoked, the following DFHPCUE fields are
significant:
PCUE_CONTROL_BITS
A 1-byte flag field. A setting of PCUECBTE indicates that
the transaction is linked to a terminal.
PCUE_TASK_NUMBER
A 3-character packed decimal field containing the task
number.
PCUE_TRANSACTION_ID
A 4-character field containing the transaction ID.
PCUE_TERMINAL_ID
A 4-character field containing the terminal ID (if any).
PCUE_PROGRAM_NAME
An 8-character field containing the name of the program
that is abending.
PCUE_LOGICAL_LEVEL
A fullword containing the number of chained DFHRSADS
blocks (that is, the logical level).
UEPTACB
Address of the transaction abend control block (TACB) for
the abend. If the abend occurred because of a program
check, the information in the TACB includes:
v The program status word (PSW)
v The registers at the time of the abend.
v Details of the subspace and access registers current at
the time of the abend.
You can map the TACB using the DFHTACB TYPE=DSECT
macro.
Return codes
UERCNORM
Continue processing – make the dump call.
192 Customization Guide