Q2. While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck

Q2. While backing up to an SBT channel, you determine that the read phase of your compressed Recovery Manager (RMAN) incremental level 0 backup is a bottleneck.
FORCE LOGGING is enabled for the database.
Which two could improve read performance?

• A. Increase the size of the database buffer cache.
• B. Enable asynchronous disk I/O.
• C. Disable FORCE LOGGING for the database.
• D. Increase the level of RMAN multiplexing.
• E. Increase the size of tape I/O buffers.