db file parallel read
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.
|
Parameter |
Description |
|---|---|
|
files |
This indicates the number of files to which the session is reading. |
|
blocks |
This indicates the total number of blocks to be read. |
|
requests |
This indicates the total number of I/O requests, which will be the same as blocks. |