DB2 auth error after applying ACF2 maintenance.

Products

• ACF2 - z/OS

Issue/Introduction

After applying the ACF2 PTF LU03786, the following error was observed on DB2 joblog:

06.50.20 STC02405  DSNL027I  - SERVER DISTRIBUTED AGENT WITH  865
   865                        LUWID=AA123456.CA64.DEFFAAA00123=12
   865                        THREAD-INFO=MASTERID:*:*:*:*:*:*:*
   865                        RECEIVED ABEND=04E
   865                        FOR REASON=00E50013

Then, the DSNWLM task hangs with the thread connection and the error also impacted executing commands to display or stop DB2, like -dis log.

Resolution

Reassembling the ACF2-DB2 exit interfaces DSN3@ATH and DSN3@ATH resolved the issue.