Upgrade from old (11.1, or 10G) to 11gR2
The upgrade to Oracle Clusterware 11gR2 will be an out of place upgrade hence a new CRS_HOME including ASM will be created which will be referred as the new GRID_Infrastructure home. If an existing ASM_HOME is present in 10gR1/10gR2 or 11gR1 then ASM will be upgraded automatically as well.
SQL> startup upgrade
SQL> SELECT count(*) FROM dba_invalid_objects;
SQL> SELECT distinct object_name FROM dba_invalid_objects;
srvctl upgrade database -d db-unique-name -o oraclehome
(to be run from all nodes)
You can refer to below for more details :