Which two are true about RMAN backups when using a media manager to write backups to tape when there are only two tape drives? (Choose two.)

Question

Options

• ASBT tape compression can be used even if no RMAN compression is configured.
• BAny backup set written to the SBT device in this configuration can contain a maximum of two
• CAny backup written to the SBT device in this configuration can contain a maximum of two backup
• DSBT tape compression and RMAN backup compression should be used in parallel.
• EThe SBT device should be configured to use PARALLELISM 2 to allow both tape drive to be used

• A
  77% (27)
• B
  3% (1)
• C
  6% (2)
• D
  14% (5)

Explanation

sbt tape compression independently can be used on the TAPE side. Oracle recommends You should not use both tape compression provided by the media manager and binary compression provided by RMAN. If the media manager compression is efficient, then it is usually the better choice. Using RMAN-compressed backup sets can be an effective alternative to reduce bandwidth used to move uncompressed backup sets over a network to the media manager, if the CPU overhead required to compress the data in RMAN is acceptable.

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