ORA-01678: parameter string must be pairs of pattern and replacement strings

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ORA-01678: parameter string must be pairs of pattern and replacement strings
Cause: The initialization parameter does not have even number of strings for its
value. The odd numbered strings are patterns to be found in file names. The even
numbered strings are used to replace the corresponding patterns when found in
file names.
Action: Specify even number of strings for the parameter, or omit the parameter.