Here in this post we will see weblogic patching i.e how to apply patches applied in weblogic in 10.3.6 version , 12c (12.1.1 and 12.1.2 and later ).
how to apply patches in weblogic in 10.3.6 version and up to 12.1.1
Weblogic Smart Update utility (bsu) is used to apply patches in 10.3.6 and 12.1.1 version of weblogic.
Weblogic Smart Update utility (bsu) lies in $MW_HOME/utils/bsu/
BSU Utility stands for BEA Smart update utility
Now how to apply patches in weblogic in 10.3.6
0. stop the weblogic server
1.First unzip the patch to {MW_HOME}/utils/bsu/cache_dir
Note: You must make sure that the target directory for unzip has required write and executable permissions
for “user” with which the component being patched is installed.
Note down the patch ID by reading the read me
Description: ============ Oracle WebLogic Sever overlay patch for 10.3.6.0.190416 which requires WLS 10.3.6.0.190416 PSU (Patch Number: 29204678 , Patch ID :U5I2) in the environment
2.Navigate to the {MW_HOME}/utils/bsu directory.
For Unix/Linux
bsu.sh -install -patch_download_dir=${MW_HOME}/utils/bsu/cache_dir -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
for Windows
bsu.cmd -install -patch_download_dir=${MW_HOME}/utils/bsu/cache_dir -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
3.If it gives any conflict with any patches already applied in the system , we can rollback the conflict the patch as below
For Unix/Linux
bsu.sh -remove -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
for Windows
bsu.cmd -remove -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
4.Once the patch is applied successfully, we can check for the applied patches using the below article
how to check patches applied in weblogic
5.If you receive below error while applying patches with BSU utility
Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit exceeded at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2521) at java.lang.Class.getMethod0(Class.java:2764)
Following steps can be used
Increase the heap size to allow more memory and prevent an eventual “java.lang.OutOfMemoryError: GC overhead limit exceeded” error:
Go to $WL_HOME/utils/bsu Prepare to edit the bsu.sh (for UNIX) or bsu.cmd (for Windows) Find the MEM_ARGS setting, e.g., the default as MEM_ARGS="-Xms256m -Xmx512m" Increase these values to a higher setting, e.g., MEM_ARGS="-Xms1024m -Xmx1024m"
Ensure MEM_ARGS are used in bsu script for the patch-client.jar to resolve “java.lang.OutOfMemoryError: Java heap space” error:
Look for the line:
"$JAVA_HOME/bin/java" -jar patch-client.jar $*
Change to the following to ensure the MEM_ARGS are passed:
"$JAVA_HOME/bin/java" ${MEM_ARGS} -jar patch-client.jar $*
6.Start the weblogic Server
How to increase the patch application Performance
In case patch application is taking lot of time, we can do two things
1.We can upgrade to latest BEA Smart utility
Steps
a. Ensure you are on WebLogic Server 10.3.6
b. Ensure you have applied previously released Smart Update 3.3.0
Patch 12426828 SMARTUPDATE 3.3 INSTALLER PLACEHOLDER
This is for 10.3.6 even though it says 10.3.5, (which was when it was initially released)
When you launch BSU, it will display the version when it is loading. If the server has internet access, then you should be given the option to update Smart Update when you run the tool.
You may also run the following command:
%WL_HOME%\utils\bsu\bin\bsu.cmd -version (for Windows) $WL_HOME/utils/bsu/bin/bsu/bsu.sh -version (for Unix/Linux)
2.Older PSU’s that are no longer in use may be deleted from the bsu cache_dir. This can further speed up some processing.
3.You can try increasing the memory foot print
Go to $FMW_Home/utils/bsu.
Edit bsu.sh (for UNIX) or bsu.cmd (for Windows).
Here you will find the following: MEM_ARGS=”-Xms256m -Xmx512m”
Increase these values as needed to 3 Gb or 4 Gb and additional GCOverheadLimit parameter: for example, to
"-Xms3072m -Xmx3072m -XX:-UseGCOverheadLimit" or "-Xms4098m -Xmx4098m -XX:-UseGCOverheadLimit"
how to apply weblogic patches in Weblogic 12.1.2 and later
BSU Utility is deprecated in 12.1.2 . We use opatch to patch the weblogic installation
On Unix/linux
cd $MW_HOME/OPatch ./opatch apply
On Windows:
cd %MW_HOME%/OPatch opatch apply
How to Rollback patches from Weblogic in 10.3.6 version and up to 12.1.1
- Stop the web logic server
- Navigate to the {MW_HOME}/utils/bsu directory.
- Rollback the patch using below commandFor Unix
bsu.sh -remove -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
for Windowsbsu.cmd -remove -patchlist=<id> -prod_dir=$MW_HOME\wlserver_10.3
4. Once the patch is applied successfully, we can check for the applied patches using the below article
how to check patches applied in weblogic5. Start the weblogic server
How to Rollback patches from Weblogic in 12.1.1 later
BSU Utility is deprecated in 12.1.2 . We use opatch to patch the weblogic installation
On Unix/Linux
cd $MW_HOME/OPatch ./opatch rollback -id
On Windows:
cd %MW_HOME%/OPatch opatch rollback -id
I hope you like this post on weblogic patching and these steps are helpful for your administration in weblogic server. Please do let me know if you find any difficulty on how to apply weblogic patch in Linux or applying patches in window
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