Symptoms: High storage usage detected in the
RRS address space.
How to investigate: Look for RRS IBM Health Checker
for z/OS check exception messages that warn of growth in RRS storage
use. See RRS checks (IBMRRS) in
IBM Health Checker for z/OS User's Guide for
a description of RRS checks:
- RRS_Storage_NumLargeLOGBlks - Monitors the count of large log
buffer blocks in RRS. The system issues exception message ATRH020E
if the count exceeds the threshold monitored, which can affect RRS
private storage. (The default threshold is 1,000.)
- RRS_Storage_NumLargeMSGBlks - Monitors the count of large message
buffer blocks in RRS. The system issues exception message ATRH018E
if the count exceeds the threshold monitored, which can affect RRS
private storage. (The default threshold is 1,000.)
- RRS_Storage_NumTransBlks - Monitors the count of active URs (transactions)
with RRS. The system issues exception message ATRH014E if the count
exceeds the threshold monitored, which can impact common storage usage.
(The default threshold is 10,000.) In addition to the UR control
block created in private storage, RRS creates additional control block
data in common storage.