128 lines
2.9 KiB
Plaintext
128 lines
2.9 KiB
Plaintext
alias DEMO='rlwrap sqlplus DEMO/"secret"@bakura:1521/NIHILUS'
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drop table T1 purge;
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create table T1 (
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id number generated always as identity,
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n1 number(1),
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c1 varchar2(10),
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d1 DATE
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);
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alter table T1 add constraint T1_PK primary key (ID);
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-- infinite_update2.sql
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whenever sqlerror exit failure
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declare
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i NUMBER;
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begin
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i:=0;
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loop
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i:=i+1;
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insert into T1(n1,c1,d1) values(mod(i,3),DBMS_RANDOM.string('a',10),sysdate);
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commit;
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dbms_session.sleep(1);
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end loop;
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end;
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/
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drop materialized view MW0;
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drop materialized view MW1;
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drop materialized view MW2;
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create materialized view MW0 as select * from T1 where n1=0;
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create materialized view MW1 as select * from T1 where n1=1;
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create materialized view MW2 as select * from T1 where n1=2;
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alter session set NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI:SS';
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select max(d1) from MW0;
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select max(d1) from MW1;
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select max(d1) from MW2;
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create materialized view log on T1 with primary key including new values;
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set lines 256
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col log_table for a30
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col log_trigger for a30
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col primary_key for a3 head PK
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select log_table,log_trigger,primary_key from dba_mview_logs where log_owner='DEMO' and MASTER='T1';
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-- on snap "server" site
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set lines 256
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col owner for a15
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col name for a25
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col master_owner for a15
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col master for a25
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col master_link for a25
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col refresh_method for a15
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col type for a10
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col status for a7
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col snaptime for a20
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select
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snap.owner
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,snap.name
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,snap.snapid
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,snap.status
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,slog.snaptime
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,snap.master_owner
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,snap.master
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,snap.refresh_method
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,snap.type
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,snap.master_link
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from
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sys.slog$ slog
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join dba_snapshots snap on slog.snapid=snap.snapid
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where slog.mowner='DEMO' and slog.master='T1';
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col snapname for a30
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col snapsite for a30
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col snaptime for a30
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select
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r.name snapname, snapid, nvl(r.snapshot_site, 'not registered') snapsite, snaptime
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from
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sys.slog$ s, dba_registered_snapshots r
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where
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s.snapid=r.snapshot_id(+) and mowner='DEMO' and master='T1';
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exec dbms_mview.refresh('MW0');
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exec dbms_mview.refresh('MW1');
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exec dbms_mview.refresh('MW2');
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-- point of view of snap "client"
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select last_refresh_date,sysdate from dba_mviews where mview_name='MW0';
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-- point of view of snap "server"
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select sysdate,last_refresh from dba_snapshots where name='MW0';
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select log_table from dba_mview_logs where master='T1';
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select count(*) from DEMO.MLOG$_T1;
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exec dbms_refresh.make('MWGROUP0', list=>'MW0,MW1', next_date=>null, interval=>'null',parallelism=>2);
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exec dbms_refresh.refresh('MWGROUP0');
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-- https://www.oracleplsqltr.com/2021/03/14/how-to-unregister-materialized-view-from-source-db/
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exec dbms_mview.unregister_mview(mviewowner=>'DEMO',mviewname=>'MW2',mviewsite=>'NIHILUS');
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exec dbms_mview.purge_mview_from_log(mview_id=>9);
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select segment_name,bytes/1024 Kb from dba_segments where segment_name='MLOG$_T1';
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