Arun Kumar
Oracle Cluster Registry (OCR) Administration
In this article we will be looking frequently used command to administer Oracle Cluster Registry - OCR.
Verify OCR
./ocrcheck
./ocrdump ocr.bkp --> To see the contents of OCR
./ocrdump -xml /tmp/ocr.bkp --> To see the contents of OCR
Check OCR Backups
./ocrconfig -showbackup auto
- Every 4 hrs backup (3 max) ñ File Names: backup00.ocr, backup01.ocr and backup02.ocr
- Daily backups (2max) ñ day.ocr and day_.ocr
- Weekly backups (2 max) ñ week.ocr and week_.ocr
./ocrconfig -manualbackup --> manual backup of OCR
./ocrconfig -backuploc <new_loc> --> to change OCR backup location
./ocrconfig -restore <file_name> --> to restore OCR file from backup file
OLR Management
cat /etc/oracle/olr.loc --> Default OLR location
$GRID_HOME/cdata/hostname.olr --> Default OLR configuration file
./ocrcheck -config -local --> Check OLR configuration file location using ocrcheck
./ocrdump -local /tmp/olr.bkp --> To see the contents of OLR
./ocrdump -local -xml /tmp/olr.bkp --> To see the contents of OLR
./ocrconfig -local -manualbackup --> To take manual backup of OLR
Oracle Clusterware Logs
All the clusterware logs reside under
$GRID_HOME/log/<hostname>
Clusterware alert log
$GRID_HOME/log/<hostname>/alertracn1.log
Other process log files
$GRID_HOME/log/<hostname>/crsd --> crs log
$GRID_HOME/log/<hostname>/ctssd --> cts log
$GRID_HOME/log/<hostname>/evmd --> evmd log
$GRID_HOME/log/<hostname>/ohasd --> ohasd log
$GRID_HOME/log/<hostname>/diskmon --> diskmon log
CRSD Oraagent logs
$GRID_HOME/log/<hostname>/agent/crsd/oragent_<crs admin username>
CRSD Ora root agent logs
$GRID_HOME/log/<hostname>/agent/crsd/orarootagent_<crs admin username>