ORA-19504,ORA-27040,

Recovery Manager (RMAN) Backup Fails with ORA-19504, ORA-27040, OSD-4002, O/S 3 [ID 1013270.102]

Problem Description:
====================

1. You highlight the instance you want to backup in the OEM Navigator, launch 
   Backup Manager, and select Oracle8 Recovery Manager.

2. You launch the Backup Wizard, select the appropriate items for the type
   of backup you are trying to do, and click Finish.

3. The backup job starts, but fails with the following errors:

RMAN-00569: ================error message stack follows================
RMAN-03007: retryable error occurred during execution of command: backup
RMAN-07004: unhandled exception during command execution on channel test1
RMAN-10032: unhandled exception during execution of job step 1: ORA-06512: at line 216
RMAN-10035: exception raised in RPC: ORA-19624: operation failed, retry possible
ORA-19504: failed to create file "filename"
ORA-27040: skgfrcre: create error, unable to create file
OSD-04002: unable to open file
O/S-Error: (OS 3) The system cannot find the path specified.
ORA-06512: at "SYS.DBMS_BACKUP_RESTORE", line #
RMAN-10031: ORA-19624 occurred during call to DBMS_BACKUP_RESTORE.BACKUPPIECECREATE

Recovery Manager complete.
child process exited abnormally


Problem Explanation:
====================

You have selected a disk channel for which the destination is invalid. When you
create a disk channel, it is possible to specify a path which does not exist.



Solution Description:
=====================

You need to change the disk channel destination to an existing path. Do the
following:

1. Open the Channels folder in Backup Manager.

2. Highlight the channel which you attempted to use for the backup.

3. In the General Page of the Channels Property Sheet, change the Destination
   to an existing path.

 
Solution Explanation:
=====================

Backup Manager allows you to create a disk channel with a non-existent path.
As a result, you will not see an error until you try to run a backup job
using the channel.  Changing the destination to an existing path allows
the file to be written.