Problems with Recovery Manager (RAMN) configuration

[Laquan]

I am currently attending classes for Oracle DBA, and we are currently working with RMAN. I have a question in which my instructor was unable to give me an answer.
When I do a "show all" which shows my configuration settings, I configured according to me and I would like to remove the "dish" statement.

The statements are :

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISH TO '%F'; # default

The second line has "DEVICE TYPE DISH" instead of "DEVICE TYPE DISK". How do I delete the second line?Is there any problem with the RMAN or configuration settings

[Praetor]

RMAN :

RMAN (Recovery Manager) is an command line tool provided by oracle database.
Using this tools,you can take an efficient backup of database and restore without any interruption of operating system.

You need to enter some configuration setting for backup process and whenever you need any backup for recovery operation after any failure of database.Just enter "backup [option]" command with sufficient option and "restore database" for restoration of the file for recovery operation,this command collect the sufficient backup contents and apply when you enter the "Recover database" command for recovery.

[Katty]

If you are working with some database and need to access the RMAN (Recovery Manager). To access the RMAN tool,the sysdba privilege need to have.

If you are running with the database and willing to access the RMAN tool,Enter the following guidelines :

1. Exit from the SQL prompt Using "EXIT" command without shutting down the database
2. Enter the "RMAN target /"
3. Now you are ready to use the RMAN tool and configure your storage for backup .

[kelfro]

Change the parameter of configuration setting and provide existing location to store the backup of control file.

Using "RMAN target / " tool, enter into the RMAN .When you will be prompted for "RMAN>" prompt enter the following command to configure the settings of storage for control file.

RMAN> CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK;
RMAN> CONFIGURE CONTROLFILE AUTOBACKUP ON;

[Zecho]

If you are getting some duplicate line for after investigating the configuration of RMAN for backup of controlfie.

The lines are as follows :

 CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
     CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISH TO '%F'; # default

The second line of this statement should be deleted from configuration list,Just execute the below statement to delete the second line.

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISH CLEAR;