Shulou(Shulou.com)06/01 Report--

Db file parallel read

The official website explains:

This happens during recovery. It can also happen during buffer prefetching, as an optimization (rather than performing multiple single-block reads). Database blocks that need to be changed as part of recovery are read in parallel from the database.

Wait Time: Wait until all of the I/Os are completed

Explanation:

Db file parallel read this occurs during recovery. It can also occur during buffer prefetching as an optimization (rather than performing multiple single-block reads). Read the database blocks that need to be changed as part of the recovery in parallel from the database.

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