对restore database preview显示结果的思考

一restoredatabasepreview解释：官方说明：YoucanapplyRESTORE...PREVIEWtoanyRESTOREoperationtocreateadetailedlistofeverybackuptobeusedintherequestedRESTO

一 restore database preview 解释：

官方说明：

You can apply RESTORE ... PREVIEW to any RESTORE operation to create a detailed list of every backup to be used in the requested RESTORE operation, and the necessary target SCN for recovery after the RESTORE operation is complete. This command accesses the RMAN repository to query the backup metadata, but does not actually read the backup files to ensure that they can be restored.

上面大致说了两点: