Question

我有一个View，想要通过DB Link插入。但它给出了错误“ORA-02070：数据库在此上下文中不支持”。我该如何解决这个错误？

CREATE OR REPLACE FORCE VIEW V_TEST
(
   OBJECT_ID,
   SEQUENCE,
   SCHEMA_NAME,
   OBJECT_NAME,
   OBJECT_TYPE_NAME,
   LINE,
   POSITION,
   ERROR_MESSAGE,
   CREATE_DATE
)
AS
     SELECT dbaObjects.OBJECT_ID,
            dbaErrors.SEQUENCE,
            dbaErrors.OWNER AS SCHEMA_NAME,
            dbaErrors.NAME AS OBJECT_NAME,
            dbaErrors.TYPE AS OBJECT_TYPE_NAME,
            dbaErrors.LINE,
            dbaErrors.POSITION,
            dbaErrors.TEXT AS ERROR_MESSAGE,
            SYSDATE AS CREATE_DATE
       FROM SYS.DBA_OBJECTS dbaObjects, SYS.DBA_ERRORS dbaErrors
      WHERE     dbaObjects.OWNER = dbaErrors.OWNER
            AND dbaObjects.OBJECT_NAME = dbaErrors.NAME
            AND dbaObjects.OBJECT_TYPE = dbaErrors.TYPE
            AND dbaObjects.OWNER != 'SYS'
            AND dbaObjects.OWNER = 'HELLO'
            AND dbaObjects.STATUS = 'INVALID'
            AND dbaErrors.TEXT != 'PL/SQL: SQL Statement ignored'
            AND dbaErrors.TEXT != 'PL/SQL: Statement ignored'
   ORDER BY dbaErrors.OWNER,
            dbaErrors.NAME,
            dbaErrors.TYPE,
            dbaErrors.SEQUENCE;

查看和远程表类型相同

插入声明：

INSERT INTO HELLO.T_INVALID_OBJECT_2@VADA (OBJECT_ID,
                                                    SEQUENCE,
                                                    SCHEMA_NAME,
                                                    OBJECT_TYPE_NAME,
                                                    OBJECT_NAME,
                                                    LINE,
                                                    POSITION,
                                                    ERROR_MESSAGE,
                                                    CREATE_DATE)
   SELECT V.OBJECT_ID,
          V.SEQUENCE,
          V.SCHEMA_NAME,
          V.OBJECT_TYPE_NAME,
          V.OBJECT_NAME,
          V.LINE,
          V.POSITION,
          V.ERROR_MESSAGE,
          V.CREATE_DATE
     FROM V_TEST V;

给出错误插入声明:(

Answer 1

问题与视图中使用的视图（DBA_SOURCES和DBA_ERRORS）有某种关系。请参阅与V$SESSION here和here相同变体的讨论。

不幸的是，我没有看到与V $ SESSION相同的简单解决方案（如上面链接中所提出的），在我看来问题是由于sys_context的调用引起的（视图DBA_OBJECTS的嵌套视图。所以 propper 解决方案是编写您自己的DBA_OBJECTS版本而不使用sys_context / USERENV或创建此数据的本地副本（例如在GTT中））

无论如何，有两种解决方法：

1）还原插入，即通过DB LINK从视图连接到远程数据库插件。

insert into t_demo
select * from v_demo@demo;

如果无法连接远程数据库，您可以

2）或者在远程数据库上定义一个程序并从本地数据库中调用它

-- ON REMOTE DB
create procedure ins_remote   
AS
   BEGIN
    insert into t_demo
    select * from v_demo@demo;        
   END;
/
-- plus grants for execute


-- ON LOCAL DB
begin 
   ins_remote@demo;
end;
/

ORA-02070：数据库在此上下文中不支持通过DB LINK

1 个答案: