ORA-17628: Oracle error 19505 returned by remote Oracle server 1

Today I was doing a procedure for duplicating databases at a client environment. One error that pop up time to time was the one below:

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 05/13/2014 18:49:01
RMAN-05501: aborting duplication of target database
RMAN-03015: error occurred in stored script Memory Script
RMAN-03009: failure of backup command on t1 channel at 05/13/2014 18:49:00
ORA-17628: Oracle error 19505 returned by remote Oracle server

At several websites you can see different causes:

– Control file location specification was wrong;

– db_file_name_convert were not specified;

– FRA diskgroup inexisting in the target;

– etc.

I had the following two cases on my experiments:

– destination database directory not existing on the DGDATA diskgroup (+DGDATA/<db_unique_name>)

– I did not connect to auxiliary using a standard network naming (I was using ezconnect).