How to Patch Oracle Grid Infrastructure 21c ?

Oracle Grid Infrastructure 21c Patching Guide

1. Prerequisites

• Ensure enough disk space
• Confirm OPatch version is compatible
• Download and unzip patch files

2. Setup Environment

. oraenv
export PATH=$ORACLE_HOME/OPatch:$PATH
opatch version


  

2.1 Download software

-rw-r--r-- 1 grid oinstall 2262351607 Jun 18 06:16 p37642955_210000_Linux-x86-64.zip
-rw-r--r-- 1 grid oinstall   72539776 Jun 18 06:20 p6880880_210000_Linux-x86-64.zip


[grid@oragrid ~]$ du -sh 37642955/
4.7G    37642955/

[grid@oragrid ~]$ df -Ph
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             7.8G     0  7.8G   0% /dev
tmpfs                7.8G  638M  7.2G   9% /dev/shm
tmpfs                7.8G  9.3M  7.8G   1% /run
tmpfs                7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/mapper/cl-root   18G  5.2G   13G  29% /
/dev/mapper/cl-u01    48G   25G   24G  52% /u01
/dev/sda1            976M  209M  701M  23% /boot
/dev/mapper/cl-home   25G  7.1G   18G  29% /home
  

[grid@oragrid ~]$ . oraenv
ORACLE_SID = [grid] ? +ASM
The Oracle base has been set to /u01/app/grid
[grid@oragrid ~]$ export PATH=$ORACLE_HOME/OPatch:$PATH

[grid@oragrid ~]$ opatch version
OPatch Version: 12.2.0.1.46

OPatch succeeded.

  

3. Run Pre-checks

opatch util listorderedinactivepatches
opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /path/to/patch_folder



[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37657509| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37755423| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37775170| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37754564| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37678244| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

[grid@oragrid 37642955]$ $ORACLE_HOME/OPatch/opatch prereq CheckConflictAgainstOHWithDetail -phBaseDir /home/grid/37642955/37655430| grep checkConflictAgainstOHWithDetail
Prereq "checkConflictAgainstOHWithDetail" passed.

  

4. Apply Patch

cd /home/grid/37642955
opatchauto apply /home/grid/37642955 -oh $ORACLE_HOME


[root@oragrid ~]# . oraenv
ORACLE_SID = [root] ? +ASM
The Oracle base has been set to /u01/app/grid
[root@oragrid ~]# export PATH=$ORACLE_HOME/OPatch:$PATH
[root@oragrid ~]# opatch version
OPatch Version: 12.2.0.1.46

OPatch succeeded.


Check status !!!


 crsctl status resource -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
               ONLINE  ONLINE       oragrid                  STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       oragrid                  STABLE
ora.asm
               ONLINE  ONLINE       oragrid                  Started,STABLE
ora.ons
               OFFLINE OFFLINE      oragrid                  STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cdborcl.cdborcl1.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.cdborcl.db
      1        OFFLINE OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.cdborcl.orcl.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.cssd
      1        ONLINE  ONLINE       oragrid                  STABLE
ora.diskmon
      1        OFFLINE OFFLINE                               STABLE
ora.evmd
      1        ONLINE  ONLINE       oragrid                  STABLE
ora.v14mpc.db
      1        OFFLINE OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.v14mpc.pdb21from19c.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.v14mpc.v14mpcpdb.pdb
      1        OFFLINE OFFLINE                               STABLE
--------------------------------------------------------------------------------
[root@oragrid ~]#



[root@oragrid ~]# ps -ef|grep -i smon
grid        4543       1  0 05:40 ?        00:00:01 asm_smon_+ASM
root       14435   14175  0 11:51 pts/1    00:00:00 grep --color=auto -i smon
[root@oragrid ~]#

[root@oragrid ~]# echo $ORACLE_HOME
/u01/app/21.3.0/grid



$ORACLE_HOME/OPatch/opatchauto apply /home/grid/37642955 -oh $ORACLE_HOME


 which opatchauto
/u01/app/21.3.0/grid/OPatch/opatchauto



==============
[root@oragrid ~]# opatchauto apply /home/grid/37642955 -oh $ORACLE_HOME

Invalid current directory.  Please run opatchauto from other than '/root' and '/' directory.
And check if the home owner user has write permission set for the current directory.
opatchauto returns with error code = 2

====

change the Dir 

[root@oragrid ~]# cd /home/grid/37642955




[root@oragrid 37642955]# opatchauto apply /home/grid/37642955 -oh $ORACLE_HOME

OPatchauto session is initiated at Wed Jun 18 11:57:09 2025

System initialization log file is /u01/app/21.3.0/grid/cfgtoollogs/opatchautodb/systemconfig2025-06-18_11-57-21AM.log.

Session log file is /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/opatchauto2025-06-18_11-57-31AM.log
The id for this session is V5NY

Executing OPatch prereq operations to verify patch applicability on home /u01/app/21.3.0/grid
Patch applicability verified successfully on home /u01/app/21.3.0/grid


Executing patch validation checks on home /u01/app/21.3.0/grid
Patch validation checks successfully completed on home /u01/app/21.3.0/grid


Performing prepatch operations on CRS - bringing down CRS service on home /u01/app/21.3.0/grid
Prepatch operation log file location: /u01/app/grid/crsdata/oragrid/crsconfig/hapatch_2025-06-18_11-59-11AM.log
CRS service brought down successfully on home /u01/app/21.3.0/grid


Start applying binary patch on home /u01/app/21.3.0/grid
Binary patch applied successfully on home /u01/app/21.3.0/grid


Running rootadd_rdbms.sh on home /u01/app/21.3.0/grid
Successfully executed rootadd_rdbms.sh on home /u01/app/21.3.0/grid




Performing postpatch operations on CRS - starting CRS service on home /u01/app/21.3.0/grid
Postpatch operation log file location: /u01/app/grid/crsdata/oragrid/crsconfig/hapatch_2025-06-18_12-11-09AM.log
CRS service started successfully on home /u01/app/21.3.0/grid

OPatchAuto successful.

--------------------------------Summary--------------------------------

Patching is completed successfully. Please find the summary as follows:

Host:oragrid
SIHA Home:/u01/app/21.3.0/grid
Version:21.0.0.0.0
Summary:

==Following patches were SUCCESSFULLY applied:

Patch: /home/grid/37642955/37655430
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log

Patch: /home/grid/37642955/37657509
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log

Patch: /home/grid/37642955/37678244
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log

Patch: /home/grid/37642955/37754564
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log

Patch: /home/grid/37642955/37755423
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log

Patch: /home/grid/37642955/37775170
Log: /u01/app/21.3.0/grid/cfgtoollogs/opatchauto/core/opatch/opatch2025-06-18_11-59-36AM_1.log



OPatchauto session completed at Wed Jun 18 12:16:20 2025
Time taken to complete the session 19 minutes, 0 second
[root@oragrid 37642955]#




[root@oragrid 37642955]# crsctl status resource -t
--------------------------------------------------------------------------------
Name           Target  State        Server                   State details
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
               ONLINE  ONLINE       oragrid                  STABLE
ora.LISTENER.lsnr
               ONLINE  ONLINE       oragrid                  STABLE
ora.asm
               ONLINE  ONLINE       oragrid                  Started,STABLE
ora.ons
               OFFLINE OFFLINE      oragrid                  STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cdborcl.cdborcl1.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.cdborcl.db
      1        OFFLINE OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.cdborcl.orcl.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.cssd
      1        ONLINE  ONLINE       oragrid                  STABLE
ora.diskmon
      1        OFFLINE OFFLINE                               STABLE
ora.evmd
      1        ONLINE  ONLINE       oragrid                  STABLE
ora.v14mpc.db
      1        OFFLINE OFFLINE                               Instance Shutdown,ST
                                                             ABLE
ora.v14mpc.pdb21from19c.pdb
      1        OFFLINE OFFLINE                               STABLE
ora.v14mpc.v14mpcpdb.pdb
      1        OFFLINE OFFLINE                               STABLE
--------------------------------------------------------------------------------
[root@oragrid 37642955]#


  

OPatchAuto successful.
All patches were applied successfully.

5. Post-Patch Verification

crsctl status resource -t
su - grid
opatch lsinventory | grep -E "(^Patch.*applied)|(^Sub-patch)"


[grid@oragrid ~]$ id
uid=1100(grid) gid=54321(oinstall) groups=54321(oinstall),1020(osdba),54322(dba),54327(asmdba),54328(asmoper),54329(asmadmin)
[grid@oragrid ~]$


[grid@oragrid ~]$ opatch lsinventory|grep -E "(^Patch.*applied)|(^Sub-patch)"
Patch  37775170     : applied on Wed Jun 18 12:09:44 BST 2025
Patch  37755423     : applied on Wed Jun 18 12:09:23 BST 2025
Patch  37754564     : applied on Wed Jun 18 12:09:03 BST 2025
Patch  37678244     : applied on Wed Jun 18 12:08:49 BST 2025
Patch  37657509     : applied on Wed Jun 18 12:08:24 BST 2025
Patch  37655430     : applied on Wed Jun 18 12:04:19 BST 2025

6. Patches Applied

• 37655430
• 37657509
• 37678244
• 37754564
• 37755423
• 37775170

Note: Restart any database instances that were shut down during the process.