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Oracle RAC 12C to 19C ASM Upgradation

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  • User AvatarKiran Dalvi
  • 28 Nov, 2023
  • 0 Comments
  • 2 Mins Read

Oracle RAC 12C to 19C ASM Upgradation

PREREQUISITE FOR UPGRADE:

STEP:1 Create 19C Directory on Both Node 
mkdir -p /u02/app/grid/product/19C/dbhome

chown -R grid:oinstall /u02

chmod -R 775 /u02
STEP 2: Copy the 19c grid software to the first node of RAC and unzip it: 
cd u02/app/grid/product/19C/dbhome

Unzip LINUX.X64_193000_grid_home.zip-------------------------on Node 1
Step 3. Run cluvfy utility to pre-check any errors On 1st node only run the pre-upgrade script from the new home and generate a fix script if generated. as grid user. 
su - grid
cd  /u02/app/grid/product/19C/dbhome -- 19c grid home 
./runcluvfy.sh stage -pre crsinst -upgrade -rolling -src_crshome /u02/app/grid/product/12C/dbhome -dest_crshome p /u02/app/grid/product/19C/dbhome -dest_version 19.3.0.0.0 -fixup –verbose
Note: Make sure the cluvfy is executed successfully. If any error occurs, take action before going to the GRID 12c upgrade.
Step 4. Using Dry-Run Upgrade Mode to Check System Upgrade Readiness 
cd  /u02/app/grid/product/19C/dbhome
gridsetup.sh –dryRunForUpgrade

 

 

 

 

 

 

 

The dry run upgrade is successful. Let’s proceed with the actual upgrade.

Step 5: Actual Upgrade Grid Infrastructure 
— Run as grid owner (oracle) 
unset ORACLE_BASE
unset ORACLE_HOME
unset ORACLE_SID
Run below script before actual upgradation from root user 

Su root

root# /u02/app/grid/product/12C/dbhome/crs/install/rootcrs.sh –unlock –crshome /u02/app/grid/product/19C/dbhome

Now , go to grid home & call gridSetup.sh 
cd  /u02/app/grid/product/19C/dbhome
./gridSetup.sh

 

 

 

 

 

 

We have successfully upgraded the grid to the 19c version.

Step 6: Post-check after upgrading the grid infrastructure
$ crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [19.0.0.0.0]
$ crsctl query crs softwareversion
Oracle Clusterware version on node [dc-vt-testdb1] is [19.0.0.0.0]
$  crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [19.0.0.0.0]
$ crsctl query crs softwareversion
Oracle Clusterware version on node [node2] is [19.0.0.0.0]

$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
$ crsctl stat res -t -init
$ crsctl stat res -t
Upgrade the grid bash profile with a new grid home
# vi .bash_profile
export ORACLE_HOME=/u02/app/grid/product/19C/dbhome
execute bash_profile from the grid user
. .bash_profile

Grid upgradation is completed successfully!!!

For Database Upgradation on RAC Follow this blog:

 https://learnomate.org/database-upgradation-steps-for-rac-2/

Hope it Helps!

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