ORA-19038: Invalid opertions on query context
Cause: SetMaxRows, SetSkipRows, SetRowTagName opertions are applied to a query context created from newContextFromHierarchy().
Action: SetMaxRows, SetSkipRows, SetRowTagName opertions can not be applied to a query context created from newContextFromHierarchy().
1.仔细查看数据库中查询语句,检查是否表达式存在问题;
2.检查是否提供了新的检索时不存在的表达式;
3.重新开始查询;
4.检查日志,看看是否有其他信息可以解释ORA-19038错误的发生原因。