Changing the Oracle Grid Infrastructure Base Path

After installing Oracle Grid Infrastructure for a cluster (Oracle Clusterware and Oracle ASM configured for a cluster), you can change the Grid base path, if required.

This procedure applies to Oracle Grid Infrastructure 19c Release Update (19.21) and later releases.

Note:

Before changing the Grid base, you must shut down all executable that run in the Grid base directory that you are relinking. In addition, shut down applications linked with Oracle shared libraries.

1. As the root user, create a new Oracle base directory and change the owner and group for the directory and files in the new Grid base.

   # mkdir -p /u02/app/grid
   # chown -R grid:oinstall /u02/app/grid

2. Stop the Oracle Clusterware stack and TFA on all cluster nodes.

   # $ORACLE_HOME/bin/crsctl stop crs
   # tfactl stop

3. Copy the Oracle Grid Infrastructure files from the old Grid base location to the new Grid base location. For example, where the old Grid base is /u01/app/grid and the new Grid base is /u02/app/grid.

   # cp -pR /u01/app/grid /u02/app/grid

4. Create a backup of the old Oracle base to ensure new files are not created.

   # cp /u01/app/grid /u01/app/grid.old

5. Update the ORACLE_BASE parameter in the crsconfig_params file to the new Oracle base on all cluster nodes.

   # grep ORACLE_BASE /u01/app/19.0.0/grid/crs/install/crsconfig_params ORACLE_BASE=/u02/app/grid

6. Update the ORACLE_BASE parameter in orabasetab to the new Oracle base on all cluster nodes.

   # cat /u01/app/19.0.0/grid/install/orabasetab |grep -v "#" /u01/app/19.0.0/grid:/u02/app/grid:OraGI19Home1:N:

7. Restore Oracle Grid Infrastructure home file permissions on all cluster nodes.

   # /u01/app/19.0.0/grid/crs/install/rootcrs.sh -init

8. Move AHF data directory to the new Oracle base.

   # ahfctl movedatadir /u02/app/grid

9. Start the Oracle Clusterware stack on all cluster nodes.

   # $ORACLE_HOME/bin/crsctl start crs

10. Delete the old Oracle base directory.

    # mv /u01/app/grid /u01/app/grid.old

11. Confirm if any logs or traces are created in the old Oracle base after this change.

    # diff /u02/app/grid/diag/crs/node_name/crs/trace/ /u01/app/grid.old/diag/crs/node_name/crs/trace/