ORA-01221: data file string is not the same file to a
background process
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Answer / guest
Cause: When the database writer opens the data file, it is
accessing a different physical file than the foreground
doing the recovery. The timestamp set in the file header by
the foreground was not found by the background. It may be
that the background process could not read the file at all.
Action: Look in the DBWR trace file for the error it
recieved when attempting to read the file header.
Reconfigure the operating system as needed to have the file
name successfully access the same file when opened by a
background process.
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