Oracle releases patches every quarter .Ex JAN,APR,JUL and OCT Patches.Refer below screen reference .Each patch containg some product fixes ,security fixes
![](http://askmiddlewareexpert.com/wp-content/uploads/2020/12/image-23-1024x384.png)
Before applying the patch go through the Readme to know the pre-requisite .
It is always recommended to update Underlined JAVA along with Weblogic.Download Latest JAVA, Opatch and Oracle Patches.
1.JAVA Update
Take backup of JAVA and replace with New Java . Copy cacerts from old java/jre/lib/security to new java [ This will make sure we don't get any inteface system
connectivity issue ] .
2.Apply Opatch patch [ if required are per pre-requisite]
Extracted downloaded file to $WLS_HOME/patch/ and Execute the below comand to apply patch to Opatch
cd to extracted patch file
$JAVA_HOME/bin/jar -xf <<PATCH FILE>>
$JAVA_HOME/bin/java -Djava.io.tmpdir=$WLS_HOME -jar opatch_generic.jar oracle_home=$WLS_HOME -silent -invPtrLoc $WLS_HOME/oraInst.loc -ignoreSysPrereqs -J-Doracle.installer.oh_admin_acl=true
OR Use Below
$WLS_HOME/Opatch/opatch apply -jdk $JAVA_HOME
3.Apply Weblogic patch
Extract the downloaded patch to $WLS_HOME/patch/ using $JAVA_HOME/bin/jar -xf <<PATCH FILE>>
$WLS_HOME/Opatch/opatch apply -jdk $JAVA_HOME
Note: Windows requires the -oop option addition to above command .
$ORACLE_HOME/OPatch/opatch apply -oop
Verify the patch using
$ opatch lsinventory -jre $WLS_HOME/oracle_common/jdk/jre
WLS_HOME=/apps/bea14 in our case .