| ERROR | WARNING: skipping datafile compromises tablespace string recoverability |
| CAUSE | SKIP INACCESSIBLE or SKIP OFFLINE option resulted in skipping datafile during BACKUP. If the datafile has in fact been lost and there is no backup, then the tablespace is no longer recoverable without ALL archived logs since datafile creation. This may occur because the datafile was deleted by an outside utility or the datafile is made OFFLINE [DROP]. |
| ACTION | If there is no backup of skipped datafile and the tablespace has to be recoverable without ALL archived logs since datafile creation, then you should make these datafile available for backup. |