RMAN 04006 and ORA 17627 | ORA 01017 invalid username/password while RMAN duplicate.

While duplicate database By RMAN using active database command.
I had trouble of connecting from RMAN to non-mounted standby instance.
It was connecting to sqlplus perfectly.

I did copy password file from primary. made connection from tns to non-mounted instance using SQLPLUS.
it worked fine but when i tries from RMAN it gaves error.


ORA-17629: Cannot connect to the remote database server
ORA-17627: ORA-01017: invalid username/password; logon denied
ORA-17629: Cannot connect to the remote database server

Then I recreated password file with below command IGNORECASE=Y is the one which i was missing.
You also need to put sec_case_sensitive_logon=false in your non-mounted standby instance init file.

export ORACLE_SID=DUMMY
orapwd file=$ORACLE_HOME/dbs/orapw$ORACLE_SID password=sys password entries=10 force=y/n ignorecase=y 

This works like a charm. ...!!!