z/OS User Exits › z/OS Blockmode User Exits—CICS › TIRCRTRX—Default Retry Limit Exit › Customizing the Exit

Customizing the Exit

The TRANSACTION RETRY LIMIT is initialized to this value at the beginning of each new transaction. This value may subsequently be modified by a SET TRANSACTION RETRY LIMIT statement in an action diagram.

The TRANSACTION RETRY LIMIT is used to specify the maximum number of times a transaction is retried when one of the following events occurs:

• A RETRY TRANSACTION action diagram statement executes.
• A deadlock or timeout occurs trying to access a database, and no WHEN DATABASE DEADLOCK OR TIMEOUT statement was provided for that entity action statement.

In either of these cases, any uncommitted database updates are rolled back, and an attempt is then be made to execute the application again. Once the number of retries, as indicated by the TRANSACTION RETRY COUNT system attribute, reaches either TRANSACTION RETRY LIMIT or the value specified by the Ultimate Retry Limit Exit, no more retries can occur, and the application will fails with a runtime error if the last retry attempt was unsuccessful.

Modify the copied exit as needed.