Normal: You can shut down a database in
the Normal
mode if:
Immediate: You may need to use this mode if the
database or one of its applications is functioning incorrectly.
Abort: You can shut down a database instantaneously by
aborting the database instance. Use this mode only if:
- The database or one of its applications is functioning
incorrectly and none of the other types of shutdown options work.
- You need to shut down the database instantaneously (for example,
if you
know that a power shutdown will occur soon).
- You experience problems when starting a database instance.