BackupDB.bat - Error writing data to file

BackupDB.bat - Error writing data to file

Hi,
I am using version 11 of Opmanager. On trying to take a backup of my opm, I am getting the below error message. Please help.

[05-16-2014]|[20:13:07:765]|[INFO] : 
Please wait ! Backup DB started  .....

[05-16-2014]|[20:13:08:091]|[SEVERE] : 
jdbc.BackupException: Error writing data to file.
at jdbc.BackupDB.dumpDataToFile(BackupDB.java:157)
at jdbc.AbstractBackupDB.backupDB(AbstractBackupDB.java:80)
at jdbc.AbstractBackupDB.doBackup(AbstractBackupDB.java:438)
at jdbc.BackUpImpl.backupDB(BackUpImpl.java:72)
at jdbc.BackUpImpl.main(BackUpImpl.java:167)

Regards,
Praveen

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