ORA-01251: Unknown File Header Version read for file number
string



ORA-01251: Unknown File Header Version read for file number string..

Answer / guest

Cause: Read of the file header returned a record but its
version cannot be identified. Either the header has been
corrupted, or the file is not a valid database file.

Action: Have the operating system make the correct file
available to the database, or recover the file.

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