ISG361A

Explanation
Global Resource Serialization Star mode processing
on system sysname is delayed because it cannot
obtain the GRS List Lock in the ISGLOCK structure.  Each complex wide
system that is affected by the delay issues this message, but the
system that is causing the delay might not be one of the systems that
issue the message.  GRS is unable to determine which system is the
root cause of the problem.  Immediate action is required because all
global ENQ/DEQ processing is stalled on system sysname until
the problem is alleviated.
The GRS complex wide List Lock is
used by GRS to ensure that list requests are atomic and to prevent
deadlock scenarios. Typically, it is only held by a system for a small
period of time and contention is negligible.  This message denotes
an excessive delay in obtaining the lock by the issuing system.
In
the message text: sysname
The name of the system experiencing the delay.
seconds
The amount of time specified in seconds that the system has been
waiting. The  threshold used is approximately twice the maximum failure
detection interval of  every active system in the sysplex. The issuing
of the message is also dependent upon a subsequent global request
being made on the same system.

System action
All global request processing on this system is
stalled until the list lock can be obtained. Monitoring will continue.
The system will DOM this message and  issue message ISG362I after
the problem is alleviated, or reissue message  ISG361A if the threshold
is exceeded again and further global requests are queued.

Operator response
Contact the system programmer.

System programmer response
Ensure that no systems need to be
partitioned out of the sysplex. This message can be a side effect
of not confirming that a system is down. If all systems are active,
contact your IBM® support center.
System dumps for GRS and XES on all systems in the sysplex are necessary
for diagnosis. A rebuild of the ISGLOCK structure may alleviate the
problem, but dumps must be taken prior to the rebuild.

User response
None.

Programmer response
None.

Source
Global resource serialization

Module
ISGWDR

Routing code
1, 10

Descriptor code
2