Duplicate standby asm controlfile parameter

Question

Hi
I want to create a standby database by using duplicate standby command.
Both primary and standby databases are on asm.
How should I set controlfile parameter in standby database spfile before initiating duplicate for standby clause ?
Primary:
SQL> show parameter control
NAME                                 TYPE        VALUE
control_files                        string      +DATA/orcl/controlfile/current.260.769439087Should I set the same controlfile parameter for standby spfile or should I just set "+DATA" ?
I tried setting just "+DATA", however during duplicate, the instance couldnt create a controlfile in ASM.

Answer 1

http://docs.oracle.com/cd/E11882_01/server.112/e25608/scenarios.htm#SBYDB4897 says:
>
If the primary database is configured to use OMF, then Oracle recommends that the standby database be configured to use OMF, too. To do this, set the DB_CREATE_FILE_DEST and DB_CREATE_ONLINE_LOG_DEST_n initialization parameters to appropriate values. Maintenance and future role transitions are simplified if the same disk group names are used for both the primary and standby databases.
>
So try to not set CONTROL_FILES parameter and set only DB_CREATE_FILE_DEST parameter:
DB_CREATE_FILE_DEST='+DATA';