What type of backup are you running? RMAN Online backup or OS Online backup?
Originally posted by yls177
what happens is that originally, we had online backup scheduled everyday. and then this error occurs. apparently, we had file system backups scheduled recently. so what happened is that when file sysetm backup is running for a datafile, at the same time when a transaction needs that file, oracle senses that file is used by another program, make it offline and make it recover status.
am i right to conclude this way?