IBM Support

DFHTM1781 non-system user tasks not terminated and CICS immediate shutdown hangs

Troubleshooting


Problem

Your CICS Transaction Server for z/OS (CICS TS) region is hanging indefinitely after you enter CEMT PER SHUT IMMEDIATE. The last message CICS returns is DFHTM1781 stating CICS shutdown can not complete because some non-system user tasks have not terminated. The region comes down successfully when you enter CEMT PER SHUT.

Symptom

In this case, the region also comes down when you enter OMEG SHUT to bring down OMEGAMON prior to doing an immediate shutdown. 

[{"Type":"MASTER","Line of Business":{"code":"LOB70","label":"Z TPS"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"ARM Category":[{"code":"a8m0z00000007MQAAY","label":"Shutdown Startup and Recovery"}],"ARM Case Number":"","Platform":[{"code":"PF035","label":"z\/OS"}],"Version":"5.4.0;5.5.0;5.6.0;6.1.0;6.2.0"}]

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Document Information

Modified date:
29 April 2025

UID

swg21144620