gc current block congested
Definition
- Whenever any instance (HOST-03) request for any data block in any mode, this request will be served by MASTER NODE (HOST-01) of that data block.
- LMS process running on master node will provide data block to the requesting instance LMS process.
- Now LMS process running on both the nodes are highly loaded so there would be wait event ""gc current block congested
Reason
- Highly loaded LMS process or CPU.
Troubleshooting
- Increase number of LMS Processes by setting "GCS_SERVER_PROCESS" in 9i RAC onward.
- Optionally you can also set "_LM_LSM" till OPS.
- Tune OS
- Add CPUs
Definition
- Whenever any instance (HOST-03) request for any data block in any mode, this request will be served by MASTER NODE (HOST-01) of that data block.
- LMS process running on master node will provide data block to the requesting instance LMS process.
- Now LMS process running on both the nodes are highly loaded so there would be wait event ""gc current block congested
Reason
- Highly loaded LMS process or CPU.
Troubleshooting
- Increase number of LMS Processes by setting "GCS_SERVER_PROCESS" in 9i RAC onward.
- Optionally you can also set "_LM_LSM" till OPS.
- Tune OS
- Add CPUs
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