CA JCLCheck Runtime Options › Description of Runtime Options › VSAM

VSAM

The VSAM option requests support of VSAM catalog management. This option is mutually exclusive and cannot be used together with the CSI option.

This option has the following format:

Vsam[(Reverse|NORevers)]|NOVsam

Default: NOVsam

You can specify an operand to direct the order of search of the private and system catalogs:

Reverse

Causes CA JCLCheck to search the catalogs in reverse order (that is, the system catalog first, then the private catalog). This feature improves performance for jobs whose data sets are cataloged most often in the system catalog. However, exercise caution with this feature since its use produces incorrect results for data sets cataloged in both the system and the private catalog.

NORevers

Requests normal search order.

Default: NOREVERS

This option causes CA JCLCheck to invoke the IBM utility IDCAMS when it encounters a JOBCAT or STEPCAT statement defining a VSAM catalog. If IDCAMS accepts the catalog, the utility is called instead of standard catalog management during the scope of the job or step catalog.

Without the VSAM option, CA JCLCheck handles VSAM data sets correctly only if its own JCL contains a JOBCAT or STEPCAT statement defining the correct catalog.

• In non-z/OS systems, the VSAM catalog CA JCLCheck searches must be defined in a JOBCAT or STEPCAT statement in the CA JCLCheck JCL. The VSAM option is of limited use in such systems.
• Due to the large storage requirements of IDCAMS, the minimum region size for CA JCLCheck with this option is 320 KB. Failure to specify an adequate region results in an S804 ABEND the first time a JOBCAT or STEPCAT statement is scanned.
• IDCAMS is a relatively slow utility and its use can adversely affect response time when CA JCLCheck is invoked from a time‑sharing terminal.
• IDCAMS opens the catalog for an update, so appropriate clearance for CA JCLCheck is required for this option to prevent security errors.