How to connect to DATABASE and ASM instance in RAC ?

How to connect to DATABASE and ASM instance in RAC ?

Database for 2 node RAC:

set the environment variable for rdbms.
export ORACLE_SID=ORCLPROD1
sqlplus '/as sysdba'

or

export ORACLE_SID=ORCLPROD2
sqlplus '/as sysdba'


ASM for 2 node RAC:

set the environment variable for ASM instance.
export ORACLE_SID=+ASM1
sqlplus / as sysasm

or

export ORACLE_SID=+ASM2
sqlplus /as sysasm