How to Apply April 2023 CPU Patching on Hyperion Linux servers

Oracle WebLogic Server Stack Patch Bundle – April 2023

System Overview:

Oracle WebLogic Stack Patch Bundle (SPB) contains patches applicable for the following supported platforms:

• Linux x86-64
• Windows 64

Prerequisites:

Follow these required steps before applying the SPB:

• Stage and verify the SPB zip file
• Check Java version
• Create a full backup
• Check OPatch version
• Stop all processes for WebLogic Server

1.      Stage and Verify SPB Zip File

Download the p35233446_122140_Generic.zip from My Oracle Support and decide where you want to extract the SPB.

·       The location must be outside of your Oracle home.

• The location should have 4GB free disk space.
• The user should have read, write, and execute rights on the filesystem.

Extract the contents of the SPB download on the system you will be applying the patch.

• On UNIX platforms, use unzip to preserve permissions:
  unzip p35233446_122140_Generic.zip

After extracting the patch, you should have a WLS_SPB_12.2.1.4. directory with the following contents:

Note: Do not make any post-extraction changes to this directory structure.

        WLS_SPB_12.2.1.4./

            -|spbat-bundle.properties (file)
            -|README.txt (file)
            -|README.html (file)
            -|binary_patches (dir)
            -|tools (dir)

Navigate to the SPBAT directory and verify it contains the following directory structure:

Note: The default logs directory is created after running the SPBAT (shown below for reference). 

 WLS_SPB_12.2.1.4./tools/spbat/generic/SPBAT

            -|ExecEngine (dir)
            -|README.txt (this file)
            -|bin (dir)
            -|config (dir)
            -|spbat.sh (file)
            -|spbat.bat (file)
            -|tools (dir)
            -|version.txt (file)
            -|logs (dir generated after running SPBAT)

2.      Check for Minimum Java Version

Note:

Update the Java_home out of the Oracle_home before Applying the SPB patch 

1.      Use the getProperty.sh script to display the path of the current JDK from the JAVA_HOME variable. For example:

ORACLE_HOME/oui/bin/getProperty.sh JAVA_HOME

echo JAVA_HOME

2.      ORACLE_HOME/oui/bin/setProperty.sh -name OLD_JAVA_HOME -value specify_the_path_of_current_JDK

This command creates a new variable called OLD_JAVA_HOME in the .globalEnv.properties file, with a value that you have specified

3.      Set the new location of the JDK in the JAVA_HOME variable of the .globalEnv.properties file, by entering the following commands:

ORACLE_HOME/oui/bin/setProperty.sh -name JAVA_HOME -value specify_the_location_of_new_JDK

3.      Create a Complete Backup

Create a complete backup of DOMAIN_HOME, ORACLE_HOME and CENTRAL INVENTORY using standard backup software/utilities.

4.      Check OPatch Version

To verify the OPatch version, run the following command:

ORACLE_HOME/OPatch/opatch version

Minimum opatch version: 13.9.4.2.5

5.      Stop All Processes for WebLogic Server

Stop all WebLogic Server processes before proceeding with the patch installation.

Applying the SPB Patches with SPBAT

1. Run the precheck phase (optional)

a. Navigate to the SPBAT directory:

 WLS_SPB_/tools/spbat/generic/SPBAT

b. Run the SPBAT utility for the precheck phase:

   ./spbat.sh -phase precheck -oracle_home

2. Stop services

Stop all services and ensure that there are no Java processes running on this Oracle home.

3. Run precheck and apply phase during downtime

a. Navigate to the SPBAT directory:

WLS_SPB_/tools/spbat/generic/SPBAT

b. Run the SPBAT utility for the apply phase:

 ./spbat.sh -phase apply -oracle_home

4. Restart services

5. Complete validation

Post Installation Steps

Verify SPB Patches in ORACLE_HOME inventory.

ORACLE_HOME/OPatch/opatch lspatches

Rollback Steps

If you have applied any patches to resolve conflicts since applying the SPB, first ensure these overlay patches are rolled back first.

Use the following commands to roll back all patches included in the SPB:

a. Navigate to the binary patches directory:

WLS_SPB_12.2.1.3./binary_patches

b. Run the opatch nrollback command:

ORACLE_HOME/OPatch/opatch nrollback -oh -idFile rollback_patchlist.txt