RMAN > BACKUP VALIDATE DATABASE ARCHIVELOG ALL

Use BACKUP ... VALIDATE command:

You can use the BACKUP VALIDATE command to do the following:

       （1）Check datafiles for physical and logical block corruption

       （2）Confirm that all database files exist and are in the correct locations
原文链接：https://blog.csdn.net/tianlesoftware/article/details/6460464

RMAN> backup validate database archivelog all; This command is directed to the physical block

RMAN> backup validate check logical database archivelog all; a logical block