Cataloging data sets

You can indicate whether image copy, change accumulation, and log data sets are cataloged or SMS managed by using the CATDS or NOCATDS keywords on the CHANGE.RECON or INIT.RECON command.

The CHANGE.RECON and INIT.RECON commands update the RECON data set header record accordingly if you specify either CATDS or NOCATDS. The only difference between the two commands in respect to cataloging is that INIT.RECON can be issued only once for each set of RECON data sets (3) required for an IMS region.

To specify that these data sets are cataloged specify:

   //CHGRECON JOB
   ⋮
   //SYSIN   DD  *
        CHANGE.RECON  CATDS
   /*

Or, you can specify:

   //INITRCON JOB
   ⋮
   //SYSIN   DD  *
        INIT.RECON  CATDS
   /*

The data set must have been initialized as cataloged for CATDS to be effective with the CHANGE.RECON command.

Specifying NOCATDS on the CHANGE.RECON or INIT.RECON command establishes that these data sets, regardless of their cataloged status, are not to be treated as cataloged.

To specify that these data sets are not to be treated as cataloged specify:

   //CHGRECON JOB
   ⋮
   //SYSIN   DD  *
        CHANGE.RECON  NOCATDS
   /*

Or, you can specify:

   //INITRCON JOB
   ⋮
   //SYSIN   DD  *
        INIT.RECON  NOCATDS
   /*

Related reading: See IMS Version 15 Commands, Volume 3: IMS Component and z/OS® Commands for more information.