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How do I test a backup piece using dbms_backup_restore?

in Database Backup and Recovery (MOSC) 1 commentQuestion

Oracle 12c 12.2.0.1

AIX 7.1

The backup piece is on a ddboost storage device.

I want to start a dummy instance using rman (startup nomount force) and then in sqlplus execute dbms_backup_restore to test the movement of the backup piece to the database server. I have run the bms_backup_restore.RestoreBackupPiece successfully however that takes longer than expected. I would like to verify the network speed of the backup piece coming from the storage device to the database server, without actually writing it to disk. I tried using named pipes for the database data files but oracle changes the pipe to a regular file and writes.

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