ORA-19931：file string has invalid creation SCN string
错误码
错误描述：file string has invalid creation SCN string
错误原因：When opening the file to be placed in a copy or backup set, to be inspected, the file header was not recognized as a valid header because it contained a invalid creation SCN. The indicated file cannot be processed.
解决方法：Ensure that the correct files are being specified for the catalog or backup operation.
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