Applying the patch on RAC

Hi all , Here the steps that I follow “when I have a big window of unavailability”: 1) Stop all stuff: $ isqlplusctl stop$ emctl stop dbconsole$ srvctl stop database -d orcl -o immediate$ srvctl stop nodeapps -n RAC1$ srvctl stop nodeapps -n RAC2# /u01/crs/oracle/product/10.2.0/bin/crsctl stop crs (as root user) 2) The most importante BACKUP:[…]