I would like to share you this information who willingly to apply patches in ebs environment
Step 1: Download appropriate patches
Step 2: Transfer this file to appropriate location
Step 3: change the application user permission read and write , execute of this file
Step 4: Unzip the patch file and then you should read the README.txt file before you go to apply patches because If this patch said you need to do preinstall a task , you should finish the job before you start the task.
Step 5: stop the application service $ADMIN_SCRIPTS_HOME\adstpall.sh apps/apps
Step 6: Enable maintenance mode using adadmin
Step 7: apply the patch using adpatch command.
It will ask where is your patch directory, please locate it.
Autopatch file : example.drv
Step 8 : After successfully applied the patch, you should disable maintenance mode using adadmin
Step 9 : Start the application service $ADMIN_SCRIPTS_HOME\adstrtal.sh apps/apps
Step 10: Finish the job and then go and take a cup of coffee 🙂