DBA Tips Archive for Oracle
Oracle Database Shutdown Stages
by Jeff Hunter, Sr. Database Administrator
What happens during the different Oracle shutdown options? This is taken from Oracle Metalinks, Note:110704.1.
Database Shutdown options:
- NORMAL - No new connections, waits for all users to disconnect, closes and dismounts database before instance shutdown, no instance recovery required upon next db startup.
- IMMEDIATE - Rolls back all current uncommitted txns and disconnects users, closes and dismounts database before instance shutdown, no instance recovery required upon next db startup.
- TRANSACTIONAL - No new connections, users disconnected when their current txn is completed, when all "current txns are complete shutdown immediate is executed.
- ABORT - All txns are terminated, no txns are rolled back, instance terminated without closing the data files, next startup will require instance recovery.
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