My experience is on 8i, so may not apply to 10g or your question.

I have to allocate a channel before deleting:

ALLOCATE CHANNEL FOR MINTENANCE TYPE DISK;
CHANGE BACKUPPIECE '/u02/oracle/arch/backuppiecename' DELETE;
RELEASE CHANNEL;

I also think you may be seeing a default setting in the configuration
settings. You can change the configurations by using the CONFIGURE
command, or by specifying the type as above - if it has not been
deprecated in 10g.

Walt

>>> Josh Juneau <[Email Address Removed] 04/16/04 08:37AM >>>
Greetings:



I've got Oracle Database 10g running on one of my development server
boxes
and I am attempting to set up RMAN. I have successfully scheduled a
backup
job to run each night which is backing up to a local disk drive, and
compressing a "whole" database image.



The problem presents itself when I go to delete all "obsolete" backups.
If
I log into the Enterprise Mgr console as SYSDBA, I receive the following
errors when I attempt to perform this transaction.

RMAN-03002: failure of delete command at 04/16/2004 08:24:42

ORA-19554: error allocating device, device type: SBT_TAPE, device name:

ORA-27211: Failed to load Media Management Library

I am not using tape backup.I am backing up to local disk. Has anyone
else
seen this problem?

Thanks-

JJ
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