Answer Posted / $r!k@nth

--> download the "Upgrade Installer" file.
--> shut down the domain
-->take the backup of BEA_HOME, DOMAIN_HOME directories
-->keep BEA_HOME,DOMAIN_HOME,WL_HOME with you and check the weblogic version before upgrading.
-->extract the upgrade installer file in a directory
-->upgrade the weblogic version by running .jar file that has extracted from upgrade installer file.
-->now agian check the weblogic version

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