One possible log setting
that you can make is activating or deactivating redo log
management.
Deactivate redo log management only rarely and in special cases, and then only for a fixed period of time.
Redo log management is activated by default.
If you deactivate
redo log management, and then reactivate it, you must then make a complete data
backup.
When you deactivate
redo log management, the Log Writer no
longer writes any redo log entries
to the log
area. Disabling redo log
management means that the log backup history is interrupted, so if a recovery
is necessary, no log entries are available for this period. You should minimize this security risk, that
is to say, you should keep the period in which there is no active redo log
management as short as possible.
This setting is particularly useful, for example, when you are initializing a database instance, and the conditions are exceptionally critical for performance.
You can activate or
deactivate the redo log management in the ADMIN operational state
of the database instance. Use the
Database Manager GUI, for example, as described in
Changing Log Settings
(Configuration Wizard).