Shutdown a database instance.
This is a SQL*Plus command (not part of standard SQL)
SHUTDOWN ABORT SHUTDOWN IMMEDIATE SHUTDOWN TRANSACTIONAL [LOCAL] SHUTDOWN NORMAL key: ABORT The fastest possible shutdown of the database without waiting for calls to complete or users to disconnect. Uncommitted transactions are not rolled back. Client SQL statements currently being processed are terminated. All users currently connected to the database are implicitly disconnected and the next database startup will require instance recovery. You must use this option if a background process terminates abnormally. IMMEDIATE Does not wait for current calls to complete or users to disconnect from the database. Further connects are prohibited. The database is closed and dismounted. The instance is shutdown and no instance recovery is required on the next database startup. NORMAL NORMAL is the default option which waits for users to disconnect from the database. Further connects are prohibited. The database is closed and dismounted. The instance is shutdown and no instance recovery is required on the next database startup. TRANSACTIONAL [LOCAL] A planned shutdown of an instance, allowing active transactions to complete first. It prevents clients from losing work without requiring all users to log off. No client can start a new transaction on this instance. Attempting to start a new transaction results in disconnection. After completion of all transactions, any client still connected to the instance is disconnected. Now the instance shuts down (SHUTDOWN IMMEDIATE). The next startup of the database will not require any instance recovery procedures. The LOCAL mode specifies a transactional shutdown on the local instance only, so that it only waits on local transactions to complete, not all transactions. This is useful, for example, for scheduled outage maintenance.
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ALTER DATABASE MOUNT | OPEN
ALTER SESSION CLOSE DATABASE LINK
ALTER SYSTEM disable restricted session
ALTER SYSTEM kill session
DBA_PENDING_TRANSACTIONS DBA_JOBS_RUNNING V$SESSION
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