The IDMS CV abended with code U3970 and messages:
DC027002 SYSTEM MODULE PROGRAM CHECKED NEAR IDMSNCLI AT OFFSET 15BA
DC027006 TASK:xxxxxx RECURSIVE ABEND. FATAL SYSTEM ERROR
USER COMPLETION CODE=3970
Release : 19.0
Component : CA IDMS/DB
In this case the abend was caused by a storage overlay of the SSC control block.
The overlay is caused by a user program coding error, an array in the previous storage allocation has overflowed to the next storage allocation.