Customization Best Practices › Implement or Delete Submit Data Sets

Implement or Delete Submit Data Sets

If you do not have JES shared spool and have more than one LPAR where CA7ONL submits jobs, add submit data sets.

In a JES shared spool environment, CA7ONL submits jobs to the internal reader on the LPAR it is running on and JES decides where the job executes. We do not recommend that ICOM submit in this environment for the following reasons:

• JES decides the LPAR where the job actually executes.
• Performance considerations occur with the overhead of opening and reading files between systems.

To route jobs to specific LPARs in a JES shared spool environment, use route execute statements (or /*JOBPARM SYSAFF=).

If you do not have a shared JES environment, you can use ICOM to submit jobs on LPARS other than the one running CA7ONL. CA WA CA 7 Edition uses submit data sets to let ICOM do job submission. A submit data set is a physical sequential file that contains 80-byte records and resides on DASD that is shared among systems. If you decide to use submit data sets, initialize the communications data set (ddname UCC7CMDS) with the submit data sets ddnames. The ddname is required to be UCC7SUBx (the x is a number from 1 to 7) and corresponds to a DD statement in CA7ONL and ICOM. Setting the DD PARM data for ICOM to the number on its submit data set DD statement enables ICOM to do job submission. CA7ONL knows which submit data set to write the JCL of a job to by the designation of MAINID on the DB.1 panel with a SYx value. The SYx is also defined in the initialization file on a CPU statement. When it is time to submit a job, the JCL is written to the designated submit data set. ICOM picks up the JCL from the submit data set and writes it to the internal reader on the LPAR where it is running, and JES takes over from there.

If you want to remove the submit data sets and have CA7ONL submit the jobs (instead of ICOM), change the initialization file, CA7ONL, and ICOM. In the initialization file, remove the CPU statement that has the DDNAME=xxxxxxxx (where xxxxxxxx is the ddname of the submit data set in CA7ONL). Remove the DD in CA7ONL and ICOM, and change the ICOM PARM DDNAME= to *NONE*. Shut down or stop CA7ONL, ICOM, or both, and restart to get the changes into effect. Only stop or start the ICOM task that referred to the removed submit data set.

Business Value:

You can submit jobs to an LPAR where the CA7ONL is not running (only ICOM) when no JES is shared between the LPARs.