In this Mainframe Forum - You can post your queries on JCL, OS/390 JCL, MVS JCL, z/OS JCL, JES2 & JES3

Moderators: Frank Yaeger, DikDude, Moderator Group

Post Reply
Posts: 1
Joined: Thu Jun 19, 2008 11:55 pm


Post by tamma » Fri Jun 20, 2008 8:33 pm

what is vol=(,,,,99) in mainframe.what the parameters reperesent.

Posts: 12
Joined: Wed Jun 18, 2008 1:36 pm

Post by MikeJ024 » Sat Jun 21, 2008 2:57 pm

1. you have 1 too many commas. there should only be 3.
2. this parameter is usually used on a dd statement to specify the maximum # of ouput volumes (usually tapes of some kind) to be allowed before the job Abends.
3. the reason you specify this is because the system by default will only give you a maximun of 5 output volumes before Abending.
4. NOTE when you specify vol=(,,,99) you actually will get 99+5 volumes before your job abends because the system will always give the # of output volumes you specify PLUS its default of 5.
5. the maximun number I believe has been increased to 256 from the max of 99 in Z\os, but don't take that as gospel!!

Post Reply


Free tutorials from mainframegurukul
  • JCL Tutorial
    Covers all important JCL concepts.
  • Cobol Tutorial
    This tutorials covers all Cobol Topics from STRING to COMP-3.
  • DB2 Tutorial
    DB2 Tutorial focuses on DB2 COBOL Programming.
  • SORT Tutorial
    This Tutorial covers all important aspects of DFSORT with examples
  • CICS Tutorial
    This CICS tutorial covers CICS concepts and CICS Basics, CICS COBOL Programming.
Mainframe Interview questions

Other References
Mainframe Tools and others