What you need to know about OLR in the Oracle 11g GRID

What you need to know about OLR in the Oracle 11g GRID

1. Check the status of the OLR:
[Email protected] ~]# ocrcheck-local
Status of Oracle Local Registry is as follows:
Version:3
Total Space (Kbytes): 262120
Used Space (Kbytes): 2748
Available Space (Kbytes): 259372
id:935756415
Device/file Name:/U02/APP/11.2.0.3/GRID/CDATA/VMRAC1.OLR
Device/file Integrity Check Succeeded
Local Registry Integrity Check succeeded
Logical corruption Check Succeeded

2. Dump the contents of the OLR to a TXT document to view the contents of the OLR:

# Ocrdump-local-stdout

3. Export/Import the contents of OLR:
---export OLR
# ocrconfig–local–export file_name

/*file_name for import file, export file name, this file name is custom Eg:olr_myhost1_20090603_0130_export */

---import OLR:
# ocrconfig–local–import file_name

/*file_name for import file, export file name, this file name is custom Eg:olr_myhost1_20090603_0130_export */

Note
"Oracle recommends that's use the-manualbackup and-restorecommands and not the-importand-exportcommands.
"When exporting OLR, Oracle recommends including" OLR ", the host name, and the timestamp in the name string.
For Example:olr_myhost1_20090603_0130_export

4. Manual Backup OLR:

# Ocrconfig–local–manualbackup

The OLR will be upgraded once the grid is installed, or after the backup is completed. It will not be backed up automatically afterwards. Oracle recommends a manual backup of the OLR after the migration of the OCR store.

**OLR Default backup directory: Grid_home/cdata/host_name.
----Modify the OLR backup directory:
Ocrconfig-local-backuploc New_olr_backup_path

----View the contents of the OLR backup file:
Ocrdump-local-backupfile Olr_backup_file_name

It is important to note that Olr:ocrconfig-manualbackup and Ocrconfig-local-restore are used in a complementary, ocrconfig-local-export and Ocrconfig-local-impor T is a companion, which means that ocrconfig-local-export file_name exported files are not used as Ocrconfig-local-restore

5. Restore OLR:
To restore OLR:
----Stop CRS
# Crsctl Stop CRS

----Recovery OLR:
# Ocrconfig-local-restore file_name/*file_name is the file name in the OLR backup path and can be viewed by ocrconfig-local-showbackup */

-----Confirm the status of the OLR (check the logical integrity of the OLR content):
# ocrcheck-local

----Re-start CRS
# Crsctl Start CRS

----Verifying the integrity of OLR in the cluster using CVU (Note: Logical integrity of OLR content is not checked)
$ cluvfy Comp OLR

[email protected] ~]$ cluvfy Comp OLR

Verifying OLR Integrity
Checking OLR Integrity ...
Checking OLR config file ...
OLR Config file check successful
Checking OLR file Attributes ...
OLR file Check Successful

WARNING:
This check does not verify the integrity of the OLR contents. Execute ' ocrcheck-local ' as a privileged user to verify the

Contents of OLR.

OLR Integrity Check Passed
Verification of OLR Integrity was successful.