Applying Maintenance

When a PTF for MSO is to be installed, follow these steps:

  1. First, apply the PTF to the appropriate load library or libraries, according to the PTF letter that accompanies the PTF. This usually involves relinking one or more modules. Almost all MSO programs are AMODE=31,RMODE=ANY. Be sure that the resulting program modules after links have the correct AMODE and RMODE. Only explicit directions for AMODE=24,RMODE=24 in the PTF letter should generate 24-bit MSO modules.

  2. After the new modules are linked, re-apply any customization that was applied to MSO or FOCUS. This includes any exits that were installed into the affected modules, as well as any zaps that were applied.

  3. Copy all the modules in FUSELIB.LOAD into FOCLIB.LOAD, if this was done during the original MSO installation.

  4. Re-link the MSO CICS programs with the IBM CICS command-level stubs.

  5. Ensure that the MSO JCL and the CICS JCL (if applicable) point to the newly updated libraries with the PTF applied.
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