CA IDMS Tuesday Tip by Edward Gorga, Principal Support Engineer for January 7, 2015
If a CA IDMS batch program updates the TCBFSA field, it will cause a S0C4 abend because IDMS expects to have exclusive use of the TCBFSA. Optional bit 336 can be activated in RHDCOPTF to prevent the S0C4 abend in batch mode. This has been introduced by PTFs RO69648 (18.0) and RO75974 (18.5). See the PTFs for a full description of the problem.
Thanks for the tip Edward.