RMAN Restore Performance from Tape is Very Poor (Doc ID 850988.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.4 to 11.1.0.7 [Release 10.2 to 11.1]
Information in this document applies to any platform.

Symptoms

RMAN restore from sbt backup is very slow compared to backup speed.

Backup  rate is 60-90 Mb/sec.
Restore rate is     6 Mb/sec.

Backup is hardware multiplexed but media manager does support multiplexed backups.
Restore validate runtime is VERY fast so problem is the write back to disk.

Cause

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