Patching in Oracle Database in simple HIGH level steps from 11g to 12c
STEP BY STEP APPLYING PSU IN ORACLE: ==================================== 1-> We have to check the version of the OS i.e 32 or 64 bit 2-> Next we have to check the version of the database , we can use Opacth lsinventory 3-> Now check the patch advisory document to check whether patch is released or not 4-> Now download the patch and unzip the patch and check the prerequisites of the patch 5-> If the mentions as we have to install the patch using new OPatch verson then we have to download latest Opatch version 6-> Now make sure you have taken the backup of you binaries and also take database backup 7-> Now count the number of invalid objects before applying the patch 8-> Make sure you down the listener if it is running from DB home and else not required 9-> Now Shutdown the databases and the apply the patch using Opatch apply 10-> Now start the database and then run the catbundle.sql script Catbundle script contains lis...