z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
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EZZ9679E

z/OS Communications Server: IP Messages Volume 4 (EZZ, SNM)
SC27-3657-01

EZZ9679E
tcpstackname DETERMINED THAT CSM WAS CRITICAL FOR AT LEAST timevalue SECONDS

Explanation

Sysplex problem detection determined that there is a critical shortage of storage managed by the communications storage manager (CSM).

tcpstackname is the name of the TCP/IP stack.

timevalue is the number of seconds that sysplex problem detection has determined that CSM has been at a critical level.

System action

TCP/IP continues.
  • If the GLOBALCONFIG SYSPLEXMONITOR RECOVERY option is active and this stack is not the only member of its TCP/IP sysplex group, the following RECOVERY actions will occur:
    • This stack will leave the TCP/IP sysplex group.
    • This stack will no longer participate in sysplex distribution (as a distributor or target) or act as an owner or a backup for DVIPAs. All DVIPAs defined on this stack will be deactivated; however, the DVIPA definitions will be saved.
    • If the problem is corrected, this operator message will be deleted; if the GLOBALCONFIG SYSPLEXMONITOR AUTOREJOIN option is active, the stack will process the DVIPA definitions and rejoin the TCP/IP sysplex group.
  • If the GLOBALCONFIG SYSPLEXMONITOR NORECOVERY option is active, no action will be taken. If the problem is corrected, this operator message will be deleted.

See Sysplex problem detection and recovery in z/OS Communications Server: IP Configuration Guide for more information.

See GLOBALCONFIG statement in z/OS Communications Server: IP Configuration Reference for the definition of RECOVERY and NORECOVERY.

Operator response

Save the TCP/IP profile and system log. If a dump was not created, then take a dump of the TCP/IP address space and its dataspaces, and the CSM dataspace.

System programmer response

Messages were issued before this message to report that CSM storage is at a critical level. Those messages identify the type of CSM storage that is at a critical level. See the documentation for those messages for the actions that you must take to resolve the storage problem.

Issue the Display CSM command for more details about current CSM allocation and limits. CSM limits can be increased by using the Modify CSM command (no re-ipl is necessary). See the z/OS Communications Server: CSM Guide for more information.

If the CSM storage problem cannot be corrected, contact your IBM® support center with the documentation taken when the problem occurred.

If the CSM storage problem can be corrected:
  • If RECOVERY is being used, enable the stack to rejoin the sysplex group. Message EZZ9676E is issued after the process of leaving the sysplex group has successfully completed. After this message is issued, reapply the sysplex profile definitions by issuing VARY OBEY. This will cause the stack to rejoin the sysplex group.
  • If NORECOVERY is being used, no further actions are needed.

Module

EZBXFPDM

Procedure name

EZBXFPDM

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