Look for exception messages for RRS check RRS_Storage_NumServerReqs.
For information about the check, see
RRS_Storage_NumServerReqs in
IBM Health Checker for z/OS User's Guide.
This check monitors the number of server requests within RRS. The
system issues exception message ATRH016E if the number of server requests
exceeds the threshold monitored:
ATRH016E The current number of server task requests in RRS is
curreqs which exceeds the threshold
If
this number continues to grow, RRS might have a hang. RRS has a limited
number of TCBs to process each server request.
You can also observe transaction hangs by looking at the output
of the following DISPLAY command:
D RRS,UREX