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ORA10G RAC CRS

原创 Linux操作系统 作者:xhailiang 时间:2008-12-01 15:00:37 0 删除 编辑

Checking CRS status:
crsctl check crs
crs_stat
crs_stat -t

Start and Stop CRS :
crsctl start crs
crsctl stop crs
crs_start -all
crs_sop -all

 


Here is a short description of each of the CRS daemon processes:

CRSD:
- Engine for HA operation
- Manages 'application resources'
- Starts, stops, and fails 'application resources' over
- Spawns separate 'actions' to start/stop/check application resources
- Maintains configuration profiles in the OCR (Oracle Configuration Repository)
- Stores current known state in the OCR.
- Runs as root
- Is restarted automatically on failure

OCSSD:
- OCSSD is part of RAC and Single Instance with ASM
- Provides access to node membership
- Provides group services
- Provides basic cluster locking
- Integrates with existing vendor clusteware, when present
- Can also runs without integration to vendor clustware
- Runs as Oracle.
- Failure exit causes machine reboot. 
--- This is a feature to prevent data corruption in event of a split brain.

EVMD:
- Generates events when things happen
- Spawns a permanent child evmlogger
- Evmlogger, on demand, spawns children
- Scans callout directory and invokes callouts.
- Runs as Oracle.
- Restarted automatically on failure

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