GRS response time is high or the GRS ring is inactive. Use operator commands to display GRS status and attempt to restart the GRS ring. If no hardware problem is indicated, there is probably a bottleneck in one of the connected systems, causing the GRS token to become stalled. If the sysplex is a parallel sysplex, this kind of problem can be eliminated by changing to a GRS Star configuration, using the coupling facility to hold and exchange GRS data across all systems in the sysplex.
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