由 macro 发布于: 2001-03-01 11:43

The oracle server maintains online redo log files to minimize the loss of data in the database .The redo log files record all changes made to data in the database buffer cache with some exceptions;for example ,in the case of direct writes.


Redo log files are used in a situation such as an instance failure to recover committed data that has not been written to the data files.The redo log files are used only for recovery.