How can I override a SYSIN DD DSN in the proc from the JCL?
Mark Zelden, Senior software and systems architect, Zurich North America:
The syntax to override a DD statement in a proc from the execution JCL is //STEPNAME.DDNAME DD.
//MYJOB JOB (ACCT),CLASS=A //* //EXEC PROC=MYPROC //* //STEP1.SYSIN DD DSN=MY.PDS.CNTL(SYSIN1),DISP=SHR
For more information see section 5.2 on modifying procedures in the MVS JCL Reference.