Installation and Configuration Best Practices › Configuration for Optimal Performance › Review the Use of CA 1 User Exits

Review the Use of CA 1 User Exits

Review your use of CA 1 user exits as new releases are introduced. New features introduced in CA 1 can eliminate the need for user exits.

Business Value:

Exploiting the capabilities of new CA 1 features such as the TMSXTEND utility and Real-time Retention simplifies the process of upgrading to a new CA 1 release by reducing the number of user exits that must be re-installed.

Additional Considerations:

Use the SMP/E LIST SYSMODS command to show the usermods you have applied to your CA 1 target zone. You may be able to eliminate the following exits:

• Use the TMSXTEND utility to eliminate TMSXITE and TMSXITU (used for alphanumeric volume serial number support).

  The TMSXTEND utility automatically converts alphanumeric volume serial numbers in the TMC to their CA 1 internal format. Unless you are using non-standard VOLSERs, this new functionality helps you to eliminate the TMSXITE and TMSXITU exits. After converting the TMC to the new format, the TMSXITE and TMSXITU exits will no longer be invoked and can be removed at any time.

• Use the CA 1 Real-time Retention feature to eliminate TMSXITB (used for controlling retention during ABEND processing).

  The Retention Data Set (RDS) changes the retention on files that have been created correctly and if they have the ABEND bit on in FLAG1 X'10'. These rules reduce the need for TMSXU2B to set the retention during ABEND processing. You can use the RDS in real time by including a TMSRDS DD in the TMSINIT JCL, or in batch with the TMSEXPDT job. For ABEND retention, you would use a rule with the LABEL=ABEND=RETPD/EXPDT keyword. If you are using the real-time processing method, at close of file, CA 1 will apply the matching RDS rule and update the record in the TMC.

The TMSXTEND utility automatically converts alphanumeric volume serial numbers to their CA 1 internal format. Unless you are using non-standard VOLSERs, this new functionality helps you to eliminate the TMSXITE and TMSXITU exits. When converting to the new format, you need not immediately remove these exits; CA 1 will not use them.

The Retention Data Set (RDS) changes the retention on files that have been created correctly and if they have the ABEND bit on in FLAG1 X'10'. These rules reduce the need for TMSXU2B to set the retention during ABEND processing. You can use the RDS in real time by including a TMSRDS DD in the TMSINIT JCL, or in batch with the TMSEXPDT job. For ABEND retention, you would use a rule with the LABEL=ABEND=RETPD/EXPDT keyword. If you are using the real-time processing method, at close of file, CA 1 will apply the matching RDS rule and update the record in the TMC.

Note: For more information about the use of the TMSXTEND utility and Real-time Retention processing, see the Programming Guide and the Utilities and Reports Reference Guide.