oracle物化视图快速更新
短信预约 -IT技能 免费直播动态提醒
建立测试表
create table T_table nologging as select * from dba_objects;
create table t_table_1 nologging as select * from dba_tables;
--建立日志记录
create materialized view log on T_table with rowid ,sequence(object_name,object_type,owner) including new values;
create materialized view log on t_table_1 with rowid,sequence(table_name) including new values;
--建立物化视图
create materialized view mv_t_table nologging
refresh fast on demand
with rowid
START WITH TO_DATE('21-08-2017 10:09:08', 'DD-MM-YYYY HH24:MI:SS') NEXT SYSDATE + 1/(24*60)
as select count(*),a.object_type,a.owner from T_table a,t_table_1 b where a.object_name=b.table_name
group by a.object_type,a.owner
--测试
select * from mv_t_table where owner='SYSTEM';
delete from t_table where owner='SYSTEM';
insert into t_table select * from dba_objects where owner='SYSTEM';
--查看日志生成量
select a.name, b.value from v$statname a, v$mystat b where a.statistic# = b.statistic# and a.name = 'redo size';
--查看刷新日志
SELECT owner,mview_name,last_refresh_scn,last_refresh_date,query,REVISION FROM dba_mview_analysis WHERE owner='UTF32';
--查看日志记录表,MLOG$为日志记录表,一旦更新完成,此表的内容会被清掉;
select * from MLOG$_T_TABLE
select * from MLOG$_T_TABLE_1;
官方说明参见:http://docs.oracle.com/cd/E11882_01/server.112/e10706/repmview.htm#REPLN265
免责声明:
① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的,并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据,供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。
② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341