ORA-01038: cannot write database file version string with ORACLE version string

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ORA-01038: cannot write database file version string with ORACLE version string
Cause: Attempting to write datafile headers in an old format. The new format can
not be used until after the database has been verified as being compatible with this
software version.
Action: Open the database to advance to the new file formats, then repeat the
operation. If the operation is required before the database can be opened, then use
the previous software release to do the operation.