Steps to Apply Oracle Patch using Opatch

1.backup the whole database;
2.shutdown the databse as
   SQL>Shutdown immediate;
   SDL>exit
3.check any installed patch as
   oracle_home/Opatch Isinventory -detail
4.check for patch conflicts in advanced by running the following command
   Opatch apply -slient -no_bug_superset -report
5.install patch
   oracle_home/Opatch/opatch apply patch_location(like D:\patch\7631957