DBEC: Controlling Remote System Resources with Enhanced Commands › Updating URT-Level Processing Options › Overriding DBURSTR Parameter Values

Overriding DBURSTR Parameter Values

Note: Close URTs first.

To change any of the displayed options for the duration of the current CICS cycle:

1. Tab to the option to revise.
2. Overtype the value to override with the new value.
3. When you have made all of your changes, press Enter.
4. To exit, press Clear.

You define online URTs for CICS programs using three macros: the Start macro (DBURSTR), the Entry macro (DBURTBL), and the End macro (DBUREND). The Start macro is composed of twelve parameters, four of which you can override by updating the scrollable display invoked with DBEC for the URT-level URT inquiry.

Use the following guidelines to change the current setting for any of these parameter values associated with any URT.

CBSIO

Change options for CBSIO= follow:

• Increase the maximum number of I/Os to permit prior to interruption, up to 524287 (or 0, for unlimited I/Os) for all Compound Boolean Selection SELxx commands (except SELPR) to speed program execution.
• Decrease the maximum number of I/Os to permit prior to interruption, where the lowest valid value is 1 (0 means no limit) if your program is taking too much system resources.

PR

Change options for PRTY= follow:

• Increase the priority level, up to 15, with which CA Datacom/DB processes requests using this URT.
• Decrease the priority level, to a minimum of 1, to lower the priority with which requests using this URT are processed.

U

Change options for TXNUNDO= follow:

• Change from N (NO) to Y (YES) to invoke transaction backout for update requests when an abend occurs. (Recommended value.)
• Change from Y (YES) to N (NO) to not back out updates in progress when an abend occurs.

MIN or SEC

Change options for TIMEMIN= or TIMESEC= follow:

• Increase the maximum amount of time a program using this URT is to wait for a record held under exclusive control by another request from the current value up to 120, where TIMEMIN= specifies time in minutes and TIMESEC= specifies time in seconds.

  Note: TIMEMIN=0,TIMESEC=0 specifies unlimited wait time.

• Decrease the maximum wait time. The lowest valid value is TIMEMIN=0,TIMESEC=1 which specifies no wait time.