CICS/VSAM considerations

The following shows how AR/CTL for VSAM supports the CICS/VSAM environment.

CICS

If you want to use remote VSAM access services in a batch VSAM application program, your site must have a licensed copy of the IBM CICS product. AR/CTL is supported for use with all IBM-supported releases of CICS and CICS Transaction Server.

AR/CTL product license

If a CPU authorization password to enable AR/CTL for VSAM participation is not installed, no native VSAM requests are intercepted and these VSAM-oriented services of AR/CTL are unavailable:

  • local VSAM access services
  • remote VSAM access services (file sharing)
  • checkpoint pacing by VSAM call counts
  • checkpoint threshold monitoring by VSAM call counts
  • automatic checkpoints based on a trigger VSAM file
  • repositioning of VSAM data sets at restart without application program changes

VSAM batch local shared resources

AR/CTL supports VSAM batch LSR for direct access VSAM data sets. AR/CTL does not support VSAM batch LSR for sequential access VSAM data sets.


 

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