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What is startup and shutdown?

April 26, 2017shutdown startup

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What is startup and shutdown?

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Startup is a process making the Oracle Database to be accessed by all the users There are three phases to database startup 1. Start a new instance for the database 2. Mount the database to the instance 3. Opening the mounted database Shutdown is a process making the Oracle Database unavailable for all the users. There are three phases to database shutdown 1. Close database 2. Dismount the database from the instance 3. Terminate the instance.

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STARTUP is the process of starting an instance, presumably with the intent of mounting and opening a database in order to make a database system available for use. To SHUTDOWN is to disconnect an instance from the database and terminate the instance.