ORA-00750: database has been previously mounted and dismounted

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ORA-00750: database has been previously mounted and dismounted..

Answer / guest

Cause: The instance has already mounted and dismounted the
database, which is only allowed once in its lifetime.

Action: Shut down the database.

Please add more information about this Error

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ORA-00750: database has been previously mounted and dismounted..

Answer / lokesh kumar

Why we can not go back from dismounted to mounted state?

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