- The redo log buffer is 1/3 full.
- 1 MB of data have been written to the redo log buffer.
- A 3-second time-out occurs.
- commit!
- before dbwr write out dirty buffers
- A thread is closed
- Acquire the redo writing and redo allocation latches
- determine the buffer to write out
- Release the redo allocation latch
- determine how many writes are required
- Log file parallel write
- Log buffer space
- Log file sync
- REDO writes === Number of times the log buffer is written
- redo blocks written === Number of times the log buffer is written
- redo write time === Total time required to write all the redos to disk
- redo buffer allocation retires === Total number of retries necessary to allocate space in the redo buffer