Oracle® Database 8i | 9i | 10g | 11g | 12c | 18c | 19c Error Codes
Information for Database Error Code ORA-00750: database has been previously mounted and dismounted
ORA-00750: database has been previously mounted and dismounted
Cause: The instance has already mounted and dismounted the database, which is only allowed once in its lifetime.
Action: Shut down the database.
Error Type: ORA
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