文档解释 ORA-55460: incorrect usage of semantic operators Cause: There was a syntax error in the call to the SEM_RELATED operator Action: See the do……

文档解释 ORA-30370: set operators are not supported in this context Cause: A set operator such as UNION, UNION ALL, INTERSECT, or MINUS was encounte……

文档解释 ORA-29836: failed to validate referenced operators Cause: One of the operators referenced cannot be compiled. Action: Try to recompile the ……