Creating standby database 10.1.0.4.0 using OMF

While creating a standby database on 10.1.0.4.0 , i ran in some trouble while performing the following RMAN statements :

RMAN> run{
ALLOCATE AUXILIARY CHANNEL dup1 DEVICE TYPE DISK
DUPLICATE TARGET DATABASE FOR STANDBY DORECOVER;
}

First a channel will be allocated on which the duplication starts. The datafiles are places in the right location. But when it comes to the point where the duplicate action executes :

contents of Memory Script:
{
switch clone datafile all;
}
executing Memory Script

The following error is thrown :

RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 10/28/2009 19:08:41
RMAN-03015: error occurred in stored script Memory Script
RMAN-06136: ORACLE error from auxiliary database: ORA-19625: error identifying file /u02/oradata/COREF/datafile/o1_mf_system_5fyfx677_.dbf
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3

RMAN>

Here i could see that the filename which is called for , is indeed the correct one.

After some researching i found that there is a difference in the database version in which the performed actions take place.
I did set the DB_FILE_NAME_CONVERT and LOG_FILE_NAME_CONVERT , which actually should NOT be done in rdbms version 10.1.4.0. ( other versions you should , if appropriate )
Also , when performing a duplicate when the primairy database is using OMF , you should set the standby_file_management=AUTO as this will restore datafile using %u which will be converted in the correct name to be picked up by the script.

After setting the following parameters in the auxiliary pfile, the RMAN duplicate finished successfully.

db_name = COREP (- must be set to a name of the primary db_name)
db_unique_name = COREF (- must be set to a name different from primary db_unique_name)
standby_file_management = AUTO (- must set to AUTO)
db_create_file_dest = ‘/u02/oradata’ (- must be set)