IMS 15.4 base software requirements

IMS 15.4 requires the following minimum version, release, or modification levels:

• z/OS Version 2 Release 4 (5650-ZOS), or later
  • The following APARs must be installed:
    • If you are using z/OS 2.4, the following z/OS APARs must be installed for data privacy for diagnostics support for IMS 64-bit storage:
      • OA57570
      • OA57633
      for IBM® z/OS Workload Interaction Correlator support:
      • OA57165
    • For z/OS data set encryption support, one of the following DFSMS versions:
      • DFSMS 2.4 with APAR OA60688
      • DFSMS 2.5 or above
  • RACF®, or an equivalent product, if security is used. RACF is available with the IBM Security Server for z/OS (a separately orderable feature of z/OS V2R4).
  • IBM High-Level Assembler Toolkit, a separately orderable feature of z/OS V2R4.

• IRLM Version 2.3 (5635-A06) or later, if data sharing is used. IRLM Version 2.3 is delivered with IMS 15.4.

  When using multiple IMS systems:

  • On the same z/OS system, you need only one IRLM.
  • Of different release levels on the same z/OS system, you can have one IRLM or you can use two or more IRLM address spaces. If two or more IMS systems share data and are running on the same z/OS system, they should use the same IRLM.
  • On different z/OS systems for inter-processor block-level data sharing, you must have one IRLM on each z/OS system.

IMS 15.4 also operates in a virtual machine (VM) under control of z/OS. This environment is intended for use in a program development, testing, and non-XRF production environment.