Answer / guest

Cause: SwitchToCopy was called with a datafile copy for a
datafile that was dropped prior to the time this controlfile
was backed up.

Action: Restore and mount an earlier controlfile. It is
acceptable to use a controlfile that was backed up prior to
the creation of the specified datafile.

Please add more information about this Error

ORA-12556: TNS:no caller

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RMAN-12020: error on step filtered for normal output string

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TNS-04003: Syntax Error.

1 Answers  

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ORA-02307: cannot alter with REPLACE option a type that is not valid

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