ORA-30398: illegal JOIN KEY clause ORACLE 报错 故障修复 远程处理

文档解释

ORA-30398: illegal JOIN KEY clause

Cause: A JOIN KEY clause was specified that did not confORM to certain requirements. A JOIN KEY clause connecting a child level with its non-immediate ancestor level is allowed only when that child level and its ancestor level satisfy the following conditions:
1. The immediate parent of the child level must be a skip level.
2. The child level cannot be a skip level.
3. The ancestor level must be a non-skip level.
4. The ancestor level must be the nearest non-skip level to the child level in the hierarchy.

Action: Modify the JOIN KEY clause so that it satisfies the conditions mentioned above.

ORA-30398: illegal JOIN KEY clause 这是一个oracle数据库的sql错误，指在SQL语句中，JOIN KEY子句出现了非法的关键字。

官方解释

常见案例

一般处理方法及步骤

1. 检查JOIN KEY子句的语法是否正确；

2. 检查是否在JOIN KEY子句中使用了Oracle数据库的保留字，如果使用了，则可以在关键字前加上双引号，从而获得正确的解析结果；

3. 检查JOIN KEY子句语句中若有表列表进行关联，则必须检查关联的表列是否有效。