我在Oracle 10.2.0.50数据库中有一个物化视图,如下所示:
CREATE MATERIALIZED VIEW mv_cis
NOCACHE
NOLOGGING
NOCOMPRESS
NOPARALLEL
BUILD IMMEDIATE
REFRESH FORCE
ON DEMAND
WITH PRIMARY KEY AS
SELECT component_id, ctn, visible_tag, facility,
SYSTEM, elev, parent, room_number,
remarks, safety_class, seismic, quality_level
FROM v_cis;
很直接的东西。创建此物化视图后,它将生效并填充我期望的数据。然后我在其表中添加一个约束,如下所示:
ALTER TABLE mv_cis
MODIFY ctn CONSTRAINT chk_cis_ctn_null NOT NULL ENABLE VALIDATE;
这可以按预期工作,表格获得一个新的约束,并且世界上一切都很好。
然而,我回顾一下物化视图和(使用Toad for Oracle 12)它显示无效。查看user_mviews
表格会显示其中COMPILE_STATE
为NEED_COMPILE
而STALENESS
为UNDEFINED
。所以我跑:
ALTER MATERIALIZED VIEW mv_cis COMPILE;
没有变化。奇怪的是,刷新视图仍然有效,但它让我发疯,它显示无效,并使我的测试计划失败,即使一切看起来都井然有序。那么,我错过了什么?
答案 0 :(得分:3)
我要说bug,你应该检查Metalink和/或提交SR。
这是11.2场景。当然这很简单。如果您愿意,我可以使用您的实际DDL进行尝试。
SQL> create table base(id integer primary key, name varchar2(100) not null,
2 description varchar2(400));
Table created.
SQL> desc base
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(38)
NAME NOT NULL VARCHAR2(100)
DESCRIPTION VARCHAR2(400)
SQL> create materialized view mv_base build immediate refresh force on demand
2 with primary key as
3 select id, name, description from base
4 ;
Materialized view created.
SQL> desc mv_base
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(38)
NAME NOT NULL VARCHAR2(100)
DESCRIPTION VARCHAR2(400)
SQL> alter table mv_base modify description constraint chk_not_null not null
2 enable validate;
Table altered.
SQL> desc mv_base
Name Null? Type
----------------------------------------- -------- ----------------------------
ID NOT NULL NUMBER(38)
NAME NOT NULL VARCHAR2(100)
DESCRIPTION NOT NULL VARCHAR2(400)
现在检查是否需要编译。
SQL> select mview_name, compile_state, staleness from user_mviews;
MVIEW_NAME COMPILE_STATE STALENESS
------------------------------ ------------------- -------------------
MV_BASE NEEDS_COMPILE NEEDS_COMPILE
SQL> alter materialized view mv_base compile;
Materialized view altered.
SQL> select mview_name, compile_state, staleness from user_mviews;
MVIEW_NAME COMPILE_STATE STALENESS
------------------------------ ------------------- -------------------
MV_BASE VALID FRESH