The following is the ORA-19638 error message, you can learn the cause and solution of the Oracle database error.
ORA-19638 file string is not current enough to apply this incremental backup
Cause: The checkpoint of the target for this incremental backup is less than the start of the incremental backup. If this backup were applied, then any changes made between the datafile checkpoint and the start of the incremental backup could be lost.
Solution: Supply a backup set that can be applied and retry the operation.
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