Windows C User Exits › Windows Blockmode User Exits › TIRDRTL—Default Retry Limit Exits › Purpose

Purpose

TIRDRTL lets you override the CA Gen-defined default value for the TRANSACTION RETRY LIMIT system attribute. TRANSACTION RETRY LIMIT will be initialized to this value at the beginning of each new transaction. This value can subsequently be modified by a SET TRANSACTION RETRY LIMIT statement in an action diagram.

TRANSACTION RETRY LIMIT is used to specify the maximum number of times to retry a transaction 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 there is no WHEN DATABASE DEADLOCK OR TIMEOUT statement for that entity action statement.

In these cases, uncommitted database updates are rolled back, and an attempt is made to execute the application again. After the number of retries, as indicated by the TRANSACTION RETRY COUNT system attribute, reaches TRANSACTION RETRY LIMIT or the value specified by the Ultimate Retry Limit User Exit (see TIRURTL), no more retries can occur, and the application fails with a runtime error.