Managing the Physical Log

You can change the size and location of the physical log. For more information about the physical log, see Physical Log Parameters. Physical Logging, Checkpoints, and Fast Recovery, and Managing the Physical Log.

When the database server starts up, it checks whether the physical log is empty, because that implies that it shut down in a controlled fashion. If the physical log is not empty, the database server automatically performs an operation called fast recovery. Fast recovery automatically restores databases to a state of physical and logical consistency after a system failure that might have left one or more transactions uncommitted.