Operating environment

CICS® VR uses logs to recover your VSAM data.

CICS VR supports:
  • MVS log streams
  • CICS VR SAM copies of MVS log streams

Software requirements

System requirements: z/OS® V1.13 or later is required for installation and invocation of CICS VR V6R1.

Additionally, the following APARs are required to run all the CICS VR V6R1 functions, if you are using CICS VR with z/OS V1.13:
  • OA39096
  • OA42354
  • OA41727
  • OA43148
Replication logging requirements: z/OS V1.13 with the PTFs for the following z/OS APARs is required for replication logging support:
  • OA38198, OA38200, OA38201, OA38202, OA38203, OA38204, OA38205, OA38209, OA38210, OA38550, and OA44628.
CICS Requirements: The following APARs for the listed releases of CICS are required to run CICS VR V6R1 VSAM batch logging:
CICS Release APARs
CICS TS V3.1 PK23984
CICS TS V3.2 and later None

CICS TS compatibility: CICS VSAM Recovery V6R1 supports all releases of CICS TS that are currently supported by IBM, to a minimum of CICS TS V3.1. If extended ESDS support is to be used, a minimum of CICS TS V3.2 is required. CICS VR V6R1 can recover VSAM spheres from log records produced by either CICS TS forward recovery logging or CICS TS autojournaling. However, it is recommended to use log records produced by CICS TS forward recovery logging with CICS VR.

Additional requirements: None

Optional software requirements

CICS VR V6R1 contains additional support for the following optional software offerings on all supported z/OS and CICS levels.

The following software is optional and is not required to install and run CICS VR.
  • DFSMShsm logical backups and full volume dumps
  • DFSMSdss logical copies and dumps
  • VSAM Record Level Sharing (RLS), only CICS updates supported. CICS VR VSAM batch logging does not support RLS data sets.
  • DFSMStvs (Transactional VSAM)
  • Backups made using the backup while open (BWO) and concurrent copy facilities.

Hardware requirements

You need the following hardware to run CICS VR:
  • A processor that supports the software mentioned in Software requirements.
  • A tape unit or cartridge unit, disk drive space. Refer to the IBM CICSVR Version 6 Release 1 Program Directory for required storage space needed to install CICS VR.
  • CICS VR requires a minimum private area of 4 MB below the 16 MB line to execute.

Optional hardware requirements

The following hardware provides optional capabilities:
  • For concurrent copy:
    • An IBM® 3990 Model 3 with the Extended Platform and Licensed Internal Code or an IBM 3990 Model 6.
  • For VSAM RLS support:
    • A coupling facility device or z/OS image running coupling facility support is required.
  • For CICS VR VSAM batch logging:
    • Both DASD-only and coupling facility log streams are supported. Coupling facility log streams require active coupling facility links; for details, see z/OS MVS Setting up a SYSPLEX.