文档解释 ORA-44805: No classifier is present Cause: The classifier list contained no classifiers. Action: Check the syntax of the classifier list. ……

文档解释 ORA-44810: No parameter is present for expression Cause: This expression contained no paramaters or attribute values. It should contain one……

文档解释 ORA-44809: No expression is present for classifier Cause: This classifiers contained no expression. It should contain one more more express……

文档解释 ORA-44806: Extra classifiers are present in list Cause: More classifiers were present in the list than specified. Action: Only include the ……