Is z/OS IT PTF LU00570 (UPGRADE COBOL AND DB2) required if using COBOL 4.2 and DB2 V10?
Release : 8.6
Component : CA Gen MVS Implementation Tool
PTF LU00570 delivers the z/OS IT built with COBOL 6.2 and DB2 V12 and compiled (COBOL, PL/1 and C/C++) using ARCH(10).
This was done to upgrade the Gen 8.6 IT from versions no longer supported by IBM (COBOL 5.1.1 and DB2 V11).
The PTF installation requires a hardware level that supports ARCH(10).
IBM Language Environment provides Runtime support for COBOL and customers must ensure their LE contains runtime fixes that enable COBOL 6.2 applications to execute for them to run the Gen z/OS IT after PTF LU00570 is applied. The LE runtime support for COBOL 6.2 is per the advice in KB article: Do CA Gen 8.6 applications work with COBOL V4R2
In summary, the PTF LU00570 is not required for any new IT functionality and just upgrades the COBOL and DB2 versions the Gen IT is built with. However any future Gen IT Maintenance will be provided on top of this PTF, so at some point, it will need to be installed to be able to install a later PTF.