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Z NET,QUICK fails to terminate VTAM when SNAMGMT=YES

Question & Answer


Question

Z NET,QUICK fails to terminate VTAM when SNAMGMT=YES

Answer

If OMVS is not available when VTAM is terminated, the request from VTAM to OMVS to shut down its socket connections will never be completed, and VTAM termination will hang with VTAM waiting on OMVS to close down the connections.

You can take the following two alternative solutions to prevent this VTAM termination hang problem:

  • Terminate VTAM before shutting down OMVS. This modification to your VTAM and OMVS shutdown procedure will allow the VTAM termination to run to successful completion. VTAM will issue message IST1930I to indicate that all socket connections have been successfully closed, and message IST102I will be issued to indicate that VTAM termination successfully completed.

  • Issue command F NET,VTAMOPTS,SNAMGMT=NO before shutting down OMVS. This command will ensure that message IST1930I is issued, indicating that all socket connections have been successfully closed. When IST1930I is issued, you can shut down OMVS. Later, when VTAM is terminated, termination will run to successful completion. This approach is appropriate if you want to shut down OMVS but do not want to shut down VTAM just yet.

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Product Synonym

ZOSCS COMMSERVER

Document Information

Modified date:
15 April 2015

UID

dwa1177834