z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
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EZD1974E

z/OS Communications Server: IP Messages Volume 2 (EZB, EZD)
SC27-3655-01

EZD1974E
tcpstackname CSM HAS BEEN CONSTRAINED FOR AT LEAST timevalue SECONDS

Explanation

Sysplex problem detection determined that storage managed by the communications storage manager (CSM) has been constrained for multiple monitoring intervals.

In the message text:
tcpstackname
The name of the TCP/IP stack.
timevalue
The number of seconds that syplex problem detection has determined that CSM has been constrained.

System action

TCP/IP continues.

If the GLOBALCONFIG SYSPLEXMONITOR RECOVERY option is active, and this stack is not the only member of the TCP/IP sysplex group, the following RECOVERY actions will occur:
  • This stack will leave the 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. Monitoring will continue. This operator message will be deleted when the CSM constraint is corrected.

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

Operator response

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

System programmer response

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

If the CSM storage problem cannot be corrected, contact your IBM® support center with the documentation that was obtained 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.

User response

Not applicable.

Problem determination

Not applicable.

Source

z/OS® Communications Server TCP/IP: Configuration & Initialization

Module

EZBXFPDM

Routing code

2, 8

Descriptor code

2

Automation

Not applicable.

Example

EZD1974E TCPCS1 CSM HAS BEEN CONSTRAINED FOR AT LEAST 90 SECONDS

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