ORA-01460 unimplemented or unreasonable conversion requested Cause: The requested format conversion is not supported. Action: Remove the requested conversion from the SQL statement. Check the syntax for the TO_CHAR, TO_DATE, and TO_NUMBER functions to see which conversions are supported.检查一下你的转换过程，还有你的字符集
Cause: The requested format conversion is not supported.
Action: Remove the requested conversion from the SQL statement. Check the
syntax for the TO_CHAR, TO_DATE, and TO_NUMBER functions to see which
conversions are supported.检查一下你的转换过程，还有你的字符集