HomeOracleOracle Error ORA-19957: database should have no datafiles in unknown state

Oracle Error ORA-19957: database should have no datafiles in unknown state

Oracle Error Message

ORA-19957: database should have no datafiles in unknown state

Reason for the Error

The operation failed because the database had one or more datafiles that were in an unknown state.

Solution

Drop the datafiles or recover them and bring them online.

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