Materialized view to refresh force
Helloon orcl1, I created:
CREATE MATERIALIZED VIEW mv_emp_pk
REFRESH FAST START WITH SYSDATE
NEXT SYSDATE + 1/48
WITH PRIMARY KEY
AS SELECT * FROM scott.emp@remote;
And on orcl2:insert into emp (empno,ename) values (2323,'somename');
SQL> select distinct ename from emp;
ENAME
----------
ALLEN
JONES
FORD
CLARK
MILLER
somename
SMITH
WARD
MARTIN
SCOTT
TURNER
15 rows selected.
But after 40 minutes on orcl1:SQL> select ename from mv_emp_pk;
ENAME
----------
SMITH
ALLEN
WARD
JONES
MARTIN
BLAKE
CLARK
SCOTT
KING
TURNER
14 rows selected.
Why mv_emp_pk is not updated?Thank you.
PS:
SQL > select elements, to_char (next_date, ' DD-MON-RR hh: mi AM') of user_jobs;
WHAT
-------------------------------------------------------------------------------
TO_CHAR (NEXT_DATE,
------------------
DBMS_REFRESH. Refresh ("" SCOTT"." (MV_EMP_PK"');
JUNE 19, 10 22:40
How can I force the materialized view to refresh?
Thank you.
How can I force the materialized view to refresh?
Run DBMS_SNAPSHOT. REFRESH ('MV_EMP_PK', 'c');
Tags: Database
Similar Questions
-
Materialized view automatically refresh? If the updating of the means how?
Materialized view refresh automatically? If the updating of the means how?
It is expected is not to ask questions of the basic documentation.
Refresh Options
When you define a materialized view, you can specify three update options: how to refresh, what kind of update and can trust constraints be used. If not specified, default values are considered as
ON
DEMAND
,FORCE
, andENFORCED
forced respectively.The two execution modes are
ON
COMMIT
andON
DEMAND
. According to the materialized view, you create, some options may be unavailable. Update modes are described in table 8-4 .Table 8-4 Modes of discount
Refresh the Mode Description ON COMMIT
Refresh product automatically when a transaction which changed one of the paintings of the materialized view's retail is committed. This can be specified as the materialized view is quickly updatable (in other words, no complex). The
ON
COMMIT
privilege is required to use this mode.ON DEMAND
Refresh occurs when a user manually executes one of the procedures available refresh contained in the
DBMS_MVIEW
package (REFRESH
,REFRESH_ALL_MVIEWS
,REFRESH_DEPENDENT
).http://docs.Oracle.com/CD/B28359_01/server.111/b28313/basicmv.htm#i1006193
-
Materialized view fast refresh option
Dear all,
I have a vision materilized which refreshes every 5 minutes and his works well, but one of the base tables has 300 fields and I need this view refresh only when 3 of the fields of 300 has evolved.
If anyone can help me, I understand that
The script of my VM is:
CREATE MATERIALIZED VIEW SCHEMA1. INVM_TARJETADEBITO_SALDOS_VM
N OCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
BUILD IMMEDIATE
REFRESH FAST START WITH SYSDATE NEXT SYSDATE + 5/1440
WITH THE PRIMARY KEY
AS
SELECT CHAMP_1, CHAMP_2, FIELD_3, FIELD_4
OF SCHEMA1. TABLE_1 has, SCHEMA1. TABLE_2 b
WHERE a.PK_1 = b.PK_1;
Best regards
Diego Nuñez
> but one of the base tables has 300 fields and I need from this point of view, refresh only when 3 of the fields of 300 has evolved.
You cannot set this "restriction". If a row is updated - know if 1 single byte in a column or 300 columns are updated - the line qualifies to be propagated to the MV.
That you can set is * that * columns are replicated in the MV.
For the journal of MV, you can also specify which columns are referenced as columns of filter (with the WITH clause). It is usually of the columns that use the MV and/or is the joining columns for a MV that has a join.
Hemant K Collette
-
materialized view full refresh much slower that recreate
Hello!
We use the view materialized for our DWH, which freshen every day to demand and full. I noticed that after some time refreshing take very long materialized view (1 h), recreating the view materialized and refreshing it at the same time just takes a few minutes. The result is exactly the same thing.
Can someone explain to me why this is the case? And is there a better way to recreate materialized view that copying and running the entire SQL statement?
Thanks for your help!
Edited by: 890408 26 March 2012 23:29Since 10g or 10 g 2, the default behavior for a refreshment FULL of a MV is DELETE and INSERT.
(In 9i, it was TRUNCATE and INSERT - which was, obviously, faster).
The advantage with the DELETE and INSERT, is that the data are still visible in the MV while it is updating.See Oracle's Support article:
Refresh complete reading consistency behavior during refresh and refresh complete Performance influenced by the setting of refresh ATOMIC_REFRESH [ID 553464.1]Hemant K Collette
-
Materialized - view fast refresh connects
I understand that there is a data change log maintained internally to fast refresh materialized view (CDC) Capture occurs.
My question is, will this newspaper get purged once the changes are applied to a corresponding materialized view or it will persist with other changes is attached to it?
What would be the size of the change log for 150 million documents covering 40 base tables?Sorry, I haven't used groups of refreshment MV.
-
Materialized view - REFRESH to CLERK a mistake
I'm changing the mode to refresh a materialized view ON demand to COMMIT ON and I get an error:
Error in the command line: 4 column: 9
Error report:
SQL error: ORA-12054: cannot set the attribute ON COMMIT refresh for the materialized view
12054 00000 - "cannot set the refresh attribute COMMIT for the materialized view.
* Cause: The materialized view did not meet the conditions for release at the time.
* Action: Specify only valid options.
The original DDL is
--------------------
CREATE THE TEST_MV MATERIALIZED VIEW
REFRESH THE STRENGTH TO DEMAND
LIKE SOME a.field1, MAX (DECODE (a.field2, 1, field3, NULL)) lbl
FROM (SELECT field1, Field2, field3 FROM table_source GROUP BY Field1, Field2, field3) a
GROUP BY a.field1;
--------------------
and I tried
--------------------
CREATE THE TEST_MV MATERIALIZED VIEW
REFRESH FORCE THE COMMIT
LIKE SOME a.field1, MAX (DECODE (a.field2, 1, field3, NULL)) lbl
FROM (SELECT field1, Field2, field3 FROM table_source GROUP BY Field1, Field2, field3) a
GROUP BY a.field1;
--------------------
WITH ROWID option
How can I change the mode of a materialized view Refresh?
Thank you.His 10g (10.2)
10.2.?. ?
You probably use a wrong syntax to pass through. Try using something like the following. I changed the query to use Scott emp and dept tables. You can pass your own tables and queries using them.
VARIABLE task_cust_mv VARCHAR2(30); VARIABLE create_mv_ddl VARCHAR2(4000); EXECUTE :task_cust_mv := 'cust_mv'; EXECUTE :create_mv_ddl := 'CREATE MATERIALIZED VIEW cust_mv REFRESH FAST DISABLE QUERY REWRITE AS SELECT e.empno, d.deptno, SUM(e.sal) sum_amount FROM scott.emp e, scott.dept d WHERE e.deptno = d.deptno GROUP BY d.deptno,e.empno '; EXECUTE DBMS_ADVISOR.TUNE_MVIEW(:task_cust_mv, :create_mv_ddl);
I am that running on 11106 on Win xp professional SP 2.
HTH
Aman... -
Oracle Database 11 g Enterprise Edition Release 11.2.0.4.0 - 64 bit Production
PL/SQL Release 11.2.0.4.0 - Production
CORE Production 11.2.0.4.0
AMT for Linux: Version 11.2.0.4.0 - Production
NLSRTL Version 11.2.0.4.0 - Production
I create the structure of the table like that.
create table test1 (a primary key, b (2) char number, date c, d varchar2 (10), date of e);
create table test2 (number of ab, cd (2) tank, date of the ef, gh varchar2 (10), date of the ij, kl varchar2 (100));
Create materialized view log on test1;
create materialized view fast refresh test1_v on commit in select * from test1;
I have create a trigger of the sample
CREATE OR REPLACE TRIGGER test1_trig
AFTER INSERT OR UPDATE OR DELETE
ON test1_v
FOR EACH LINE
DECLARE
lr_test2 test2% ROWTYPE;
lv_error VARCHAR2 (4000);
BEGIN
lr_test2. AB: =: NEW.a;
lr_test2. CD: =: NEW.b;
lr_test2. GH: =: NEW.d;
IF THE INSERTION
THEN
lr_test2. EF: = SYSDATE;
lr_test2.IJ: = SYSDATE;
lr_test2.KL: = 'INSERT ';
INSERT INTO test2
VALUES lr_test2;
ELSIF UPDATE
THEN
lr_test2.IJ: = SYSDATE;
lr_test2.KL: = 'UPDATE ';
UPDATE test2 = lr_test2 ab WHERE = LINE: OLD.a;
ELSIF REMOVAL
THEN
DELETE FROM test2
AB = WHERE: old.a;
END IF;
EXCEPTION
WHILE OTHERS
THEN
lv_error: = SQLERRM;
INSERT INTO XXDOMINO_FG_DATA_LOAD_ERROR
VALUES ('test1_trig',
: OLD.a,.
"test1_trig,"
LV_ERROR,
SYSDATE);
COMMIT;
END test1_trig;
/
So, if check you my code,.
When I insert EF = SYSDATE, IJ = SYSDATE.
Update EF is not changed, IJ = SYSDATE.
So I like to capture their insertion and update dates.
But if updates or insert arrives on the materialized table. The trigger themselves as an INSERT only.
So how do you capture the updates?
I use the statemnet with out merger with performance and also able to capture the update dates.
CREATE OR REPLACE TRIGGER test1_trig_merge
AFTER INSERT OR UPDATE OR DELETE
ON test1_v
FOR EACH LINE
DECLARE
lr_test2 test2% ROWTYPE;
lv_error VARCHAR2 (4000);
BEGIN
IF THE REMOVAL
THEN
DELETE FROM test2
AB = WHERE: old.a;
ELSIF INSERTION
THEN
MERGE INTO test2 one
B using (SELECT 1 FROM DUAL)
WE (ab =: new.a)
WHEN MATCHED
THEN
UPDATE the VALUE ab =: NEW.a.
CD =: NEW.b,
GH =: NEW.c
IJ = SYSDATE,
KL = "Update"
AB WHERE =: old.a
WHEN NOT MATCHED
THEN
INSERTING VALUES (: NEW.a,)
: NEW.b,.
: NEW.c.
: NEW.d,.
: NEW.e,.
"INSERT");
END IF;
EXCEPTION
WHILE OTHERS
THEN
lv_error: = SQLERRM;
INSERT INTO XXDOMINO_FG_DATA_LOAD_ERROR
VALUES ('test1_trig',
: OLD.a,.
"test1_trig,"
LV_ERROR,
SYSDATE);
END test1_trig_merge;
/
DISPLAY ERRORS;
-
Experts,
I'm trying to create a YOUNG refreshable ON COMMIT MV (xyz) using a table (circuit) and quickly updateable on validation MV (abc), but get an error:
SQL error: ORA-12054: cannot set the attribute ON COMMIT refresh for the materialized view
12054 00000 - "cannot set the refresh attribute COMMIT for the materialized view.
* Cause: The materialized view did not meet the requirements for update to
moment of validation.
* Action: Specify only valid options.
1] MV abc
= MV abc defined as below =.CREATE MATERIALIZED view abc_MV
Immediate CONSTRUCTION
REFRESH QUICKLY YOU COMMIT using constraints of trust
WITH ROWID AS SELECT n.*,.
n.ROWID noderowid
node n
where n.nodetype in (1610000069,1610007267);
-Above works OK and MV connect you on table node is created successfully
=====================================================
[ 2] Circuit Board
======================================================
CREATE MATERIALIZED VIEW LOG ON Cramer.Circuit WITH SEQUENCE, ROWID ( ) -all columns of table ofcircut parentheses
INCLUDING THE NEW VALUES;
-More top works OK and MV connect you on table circuit is created successfully
======================================================
[3] trying to create MV xyz
======================================================
CREATE MATERIALIZED VIEW LOG ON cramer.abc_MV WITH SEQUENCE, ROWID ( ) -all columns of abc_MV brackets
INCLUDING THE NEW VALUES;
-Above works OK and log on ABC MV MV gets created successfully
-Problematic step below
Xyz_MV CREATE MATERIALIZED VIEW
IMMEDIATE CONSTRUCTION
REFRESH QUICKLY YOU COMMIT using constraints of trust
AS
SELECT c., c.rowid circuit_rowid, n.rowid tr_rowid
the circuit c, abc_mv n
where circuit2startnode = n.nodeid
and c.rpplanId = n.rpplanId;
==========================================================Clues on how to solve this problem and make quickly updatable ON Commit MV xyz
Thanks in advance.
Chanchal,
If you can read my original post carefully you may have noticed that all these restrictions will not apply in my case.
All,
In any case I found the solution to my problem.
There are a few additional restrictions for materialized views multilayer
Additional Restrictions for master materialized views
The following types of materialized views may not be masters of editable materialized views:
ROWID
materialized views- Complex materialized views
- Read-only materialized views
I've updated the underlying MV abc below and everything worked like a charm
CREATE MATERIALIZED view abc_MV
Immediate CONSTRUCTION
REFRESH QUICKLY YOU COMMIT using constraints of trust
IN SELECT
n.*, n.rowid noderowid, nt.rowid nodetyperowid
the node n, nodetype_m nt
where n.node2nodetype = nt.nodetypeid
and nt.nodetypeid in (1610000069,1610007267);
Note: To ADD a join without which I was getting error below (although had primary key on the table of the node)
SQL error: ORA-23415: materialized view log for "NODE" does not save the primary key
23415 00000 - "view the log for materialized \"%s\".\"%s\"does not save the primary key.
* Cause: A primary key materialized view is refreshed quickly, but the
The materialized view log does not record the primary key information.
* Action: Use CREATING MATERIALIZED VIEW LOG... Command to add a PRIMARY KEY to
start recording of the primary key information in the materialized view
Newspaper.
-
The Materialized View - ORA-12052: is unable to fast refresh materialized view
Hello
I was hitting my head all day trying to create materialized views. I have made some progress, but have hit a brick wall, unfortunately!
Basically, I have been invited to take a view and see if I can get the benefits of performance by transforming all or part of it in materialized views. Because the underlying tables of the config is updated quite frequently, I want to fast refresh materialized views on commit. However, when I try to create a materialized view containing an outer join in an aggregated materialized view table, I get ORA-12052: is unable to fast refresh materialized view.
I went through the documentation and also Rob van Wijkvery useful series of blogs on the topic (especially http://rwijk.blogspot.co.uk/2009/09/fast-refreshable-materialized-view.html) but have not found anything that matches. Maybe I missed something somewhere along the line, or maybe I'm asking just something completely impossible?
My db is 11.2.0.2.
Here's the test scripts, I've worked with that:
drop materialized view test1_test2_mv;
Drop materialized view test2 journal;
drop table test2;
Drop materialized view test1_mv newspaper;
drop materialized view test1_mv;
Drop materialized view test1 journal;
drop table test1;create table test1 (identification number,
type varchar2 (10),
number of Val,
update_time date,
constraint t1_pk primary key (id, type, val));
Insert into test1
Select 1, 'a', 1001, sysdate - 10/24 Union double all the
Select 1, 'b', 1003, sysdate - 9/24 Union double all the
Select 1, 'c', 1002, sysdate - 8/24 Union double all the
Select 1, had ', 1004, sysdate - 7/24 Union double all the
Select 1, 'e', 1005, sysdate - 6/24 Union double all the
Select 1, 'c', 1006, sysdate - 5/24 Union double all the
Select 2, 'a', 1002, sysdate - 4/24 Union double all the
Select 2, 'b', 1005, sysdate - 3/24 Union double all the
Select 3, 'a', 1001, sysdate - 2/24 Union double all the
Select 3, 'c', 1006, sysdate - 1/24 Union double all the
Select 3, 'e', 1008, sysdate - 2/24 Union double all the
Select option 4, has ', 1004, sysdate - 3/24 Union double all the
Select 5, 'b', 1002, sysdate - 4/24 Union double all the
Select 5, 'g', 1001, sysdate - 5/24 Union double all the
Select 6, 'h', 1004, sysdate - 6/24 Union double all the
Select 7, 'b', 1007, sysdate - 7/24 Union double all the
Select 7, had ', 1001, sysdate - 8/24 double;commit;
Select * from test1;
CREATE MATERIALIZED VIEW LOG ON test1
WITH rowid, primary key (update_time)
including the new values;
Test1_mv CREATE MATERIALIZED VIEW
IMMEDIATE CONSTRUCTION
COOL OFF QUICKLY ON COMMIT
Did YOU SELECT id,
MAX (case when type = "there" end of val) THAT col_a,.
MAX (case when type = 'b', then val end) AS col_b,.
MAX (case when type = 'c' then end val) AS col_c,.
MAX (case when type = ' then end of val) AS col_d,
MAX (update_time) AS update_time
OF test1
WHERE TYPE in ('a',
« b »,
« c »,
a ')
GROUP BY id;CREATE MATERIALIZED VIEW LOG ON test1_mv
WITH rowid
including the new values;
create table test2 (identification number,
col2 number,
COL3 varchar2 (10),
number of COL4,
constraint t2_pk primary key (id));
Insert into test2
Select 1, 1, 'bob', 1 double Union all
Select 2, 1, "sue", 1 double Union all
Select 3, 1, 'tom', 1 double Union all
Select 4, 1, 'jay', 1 double Union all
Select 5, 1, 'art', 1 double Union all
Select 6, 1, 'kay', 1 double Union all
Select 7, 1, 'max', 1 double Union all
Select 8, 1, 'tim', 1 double Union all
Select 9, 1, "liz", 1 from dual;commit;
CREATE MATERIALIZED VIEW LOG ON test2
WITH rowid, primary key
including the new values;
Test1_test2_mv CREATE MATERIALIZED VIEW
IMMEDIATE CONSTRUCTION
COOL OFF QUICKLY ON COMMIT
LIKE SOME t2.rowid,.
T1.ID,
T1.col_a,
T1.col_b,
T1.col_c,
T1.col_d,
T1.update_time,
T2.col2,
T2. COL3
OF test1_mv t1,.
Test2 t2
WHERE (+) t1.id = t2.id; -symbol of outer join is not correctly displayed on the forums without space, grr!ORA-12052: is unable to fast refresh materialized view TEST1_TEST2_MV
Y at - it any way I can get the materialized view fast refresh on commit or I asking the impossible?
Add t1.rowid:
SQL > CREATE MATERIALIZED VIEW test1_test2_mv
2 BUILD IMMEDIATE
3 QUICK REFRESH YOU COMMIT
4 AS t2.rowid SELECT rid2,
5 t1.rowid rid1,
6 t1.id
T1.col_a 7,.
T1.col_b 8,.
T1.col_c 9,.
T1.col_d 10,
T1.update_time 11,
T2.col2 12,
13 t2.col3
14 OF test1_mv t1,
15 test2 T2
16 WHERE t1.id = t2.id
17.
Materialized view created.
SQL > select * from test1_test2_mv
2.
RID2 RID1 ID COL_A, COL_B, COL_C COL_D UPDATE_TIME COL2 COL3
------------------ ------------------ ---------- ---------- ---------- ---------- ---------- ------------------- ---------- ----------
AAAYB6AANAAAANDAAA AAAYB/AANAAAAN/AAA 1 1001 1003 1006 1004 25 / 06 / 2014 12:54:16 1 bob
AAAYB6AANAAAANDAAB AAAYB/AANAAAAN/AAB 2 1002 1005 25 / 06 / 2014 1 sue 14:54:16
AAAYB6AANAAAANDAAC AAAYB/AANAAAAN/AAC 3 1001 1006 25 / 06 / 2014 16:54:16 1 tom
AAAYB/AANAAAAN/AAD AAAYB6AANAAAANDAAD 4 1004 25/06/2014 14:54:16 1 jay
AAAYB6AANAAAANDAAE AAAYB / AANAAAAN / AAE 5 1002 2014/06/25 13:54:16 1 art
AAAYB6AANAAAANDAAF AAAYB/AANAAAAN/AAG 7 1007 1009 25 / 06 / 2014 10:54:16 max 1
AAAYB/AANAAAAN/AAH 1 tim
AAAYB/AANAAAAN/AAF 1 kay
AAAYB/AANAAAAN/AAI 1 liz
9 selected lines.
SQL > update of test2
2 set col3 = "fly."
3 where id = 7
6 m
1 line update.
SQL > validation
2.
Validation complete.
SQL > select * from test1_test2_mv
2.
RID2 RID1 ID COL_A, COL_B, COL_C COL_D UPDATE_TIME COL2 COL3
------------------ ------------------ ---------- ---------- ---------- ---------- ---------- ------------------- ---------- ----------
AAAYB6AANAAAANDAAA AAAYB/AANAAAAN/AAA 1 1001 1003 1006 1004 25 / 06 / 2014 12:54:16 1 bob
AAAYB6AANAAAANDAAB AAAYB/AANAAAAN/AAB 2 1002 1005 25 / 06 / 2014 1 sue 14:54:16
AAAYB6AANAAAANDAAC AAAYB/AANAAAAN/AAC 3 1001 1006 25 / 06 / 2014 16:54:16 1 tom
AAAYB/AANAAAAN/AAD AAAYB6AANAAAANDAAD 4 1004 25/06/2014 14:54:16 1 jay
AAAYB6AANAAAANDAAE AAAYB / AANAAAAN / AAE 5 1002 2014/06/25 13:54:16 1 art
AAAYB/AANAAAAN/AAH 1 tim
AAAYB/AANAAAAN/AAF 1 kay
AAAYB/AANAAAAN/AAI 1 liz
AAAYB6AANAAAANDAAF AAAYB/AANAAAAN/AAG 7 1007 1009 25 / 06 / 2014 10:54:16 1 rob
9 selected lines.
-
Pivot can be used in fast refresh materialized view?
Hi, I have a question about materialized view nested mode fast refresh on Oracle 11 g (It support function of pivot, but oracle 10 g doesn't support).
When I created, he throws "ORA-12015: cannot create a view fast refresh materialized by a complex query.
Then I used dbms_mview.explain_mview to see reason, and it tell me the following
REFRESH_FAST_AFTER_INSERT ' view inline or subquery in LIST not supported for this type of MV.
Can someone help me, any suggestions will be appreciated
create table empX as select * from scott.emp; alter table empX add constraint PK_empX_empno primary key (empno); --drop MATERIALIZED VIEW LOG ON empX; CREATE MATERIALIZED VIEW LOG ON empX with rowid, sequence(empno); --drop MATERIALIZED VIEW mv_empX; CREATE MATERIALIZED VIEW mv_empX REFRESH FAST START WITH SYSDATE NEXT SYSDATE + 1/1440 AS select * from ( select rowid emp_rowid, deptno, job, sal from empX ) PIVOT( max(sal) for job IN ('ANALYST' job1, 'CLERK' job2, 'MANAGER' job3)); --select * from mv_capabilities_table declare lv_sqltext varchar2(4000); begin execute immediate 'truncate table mv_capabilities_table'; lv_sqltext := 'select * from ( select deptno, job, sal from empX ) PIVOT( max(sal) for job IN (''ANALYST'' job1, ''CLERK'' job2, ''MANAGER'' job3)) '; dbms_mview.explain_mview(lv_sqltext,'nested=>TRUE'); commit; end; /
Let me help you...
I have done following and it run/view updated because I just replaced quickly with a complete word, because there are limitations for quickly updatable views:SQL> show user; USER is "SCOTT" SQL> create table empX as select * from scott.emp; Table created. SQL> alter table empX add constraint PK_empX_empno primary key (empno); Table altered. SQL> SQL> --drop MATERIALIZED VIEW LOG ON empX; SQL> CREATE MATERIALIZED VIEW LOG ON empX with rowid, sequence(empno); Materialized view log created. SQL> SQL> --drop MATERIALIZED VIEW mv_empX; SQL> CREATE MATERIALIZED VIEW mv_empX 2 REFRESH COMPLETE WITH rowid 3 START WITH sysdate 4 NEXT SYSDATE + 1/1440 5 AS 6 select * from 7 ( 8 select rowid emp_rowid, deptno, job, sal from empX 9 ) 10 PIVOT( max(sal) for job IN ('ANALYST' job1, 'CLERK' job2, 'MANAGER' job3)); Materialized view created. SQL> select * from mv_empx; EMP_ROWID DEPTNO JOB1 JOB2 JOB3 ------------------ ---------- ---------- ---------- ---------- AAAShcAAEAAAATTAAN 10 1300 AAAShcAAEAAAATTAAE 30 AAAShcAAEAAAATTAAJ 30 AAAShcAAEAAAATTAAC 30 AAAShcAAEAAAATTAAA 20 800 AAAShcAAEAAAATTAAK 20 1100 AAAShcAAEAAAATTAAM 20 3000 AAAShcAAEAAAATTAAD 20 2975 AAAShcAAEAAAATTAAB 30 AAAShcAAEAAAATTAAI 10 AAAShcAAEAAAATTAAL 30 950 EMP_ROWID DEPTNO JOB1 JOB2 JOB3 ------------------ ---------- ---------- ---------- ---------- AAAShcAAEAAAATTAAF 30 2850 AAAShcAAEAAAATTAAG 10 2450 AAAShcAAEAAAATTAAH 20 3000 14 rows selected. SQL> begin 2 dbms_mview.refresh('SCOTT.mv_empx'); 3 end; 4 / PL/SQL procedure successfully completed. SQL> select * from mv_empx; EMP_ROWID DEPTNO JOB1 JOB2 JOB3 ------------------ ---------- ---------- ---------- ---------- AAAShcAAEAAAATTAAN 10 1300 AAAShcAAEAAAATTAAE 30 AAAShcAAEAAAATTAAJ 30 AAAShcAAEAAAATTAAC 30 AAAShcAAEAAAATTAAA 20 800 AAAShcAAEAAAATTAAK 20 1100 AAAShcAAEAAAATTAAM 20 3000 AAAShcAAEAAAATTAAD 20 2975 AAAShcAAEAAAATTAAB 30 AAAShcAAEAAAATTAAI 10 AAAShcAAEAAAATTAAL 30 950 EMP_ROWID DEPTNO JOB1 JOB2 JOB3 ------------------ ---------- ---------- ---------- ---------- AAAShcAAEAAAATTAAF 30 2850 AAAShcAAEAAAATTAAG 10 2450 AAAShcAAEAAAATTAAH 20 3000 14 rows selected. SQL>
So, the answer is Yes, we can use Pivot with Materialized view but:
1 MV must be full refresh.
2 oracle version should be 11 g; of course the pivot is available in Oracle 11 g.If this answers your question, please close the message, otherwise continue.
These links may also be of interest:
http://docs.Oracle.com/CD/B28359_01/server.111/b28313/basicmv.htm#i1007028
http://docs.Oracle.com/CD/B28359_01/server.111/b28313/basicmv.htm#i1007007http://rwijk.blogspot.in/2009/06/fast-refreshable-MATERIALIZED-view.html
And:
Please see if (Note: 179466.1 - view to fast refresh materialized diagnose ORA-12015 / complex queries) help.
Concerning
Girish Sharma -
fast refresh on MATERIALIZED VIEW
Oracle 10 g R2 (10.2.0.5)
Scott.mv_test CREATE MATERIALIZED VIEW
Users TABLESPACE
NOCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
IMMEDIATE CONSTRUCTION
REFRESH THE STRENGTH TO DEMAND
WITH THE PRIMARY KEY
AS
Select...
I this MV, when I do the QUICK refersh as follows, I get the error message
SQL > execute DBMS_MVIEW. REFRESH ('MV_TEST', 'f');
DBMS_MVIEW BEGIN. REFRESH ('MV_TEST', 'f'); END;
*
ERROR on line 1:
ORA-12004: QUICK COOLING can be used to view materialized "SCOTT." "" MV_TEST ".
ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2251
ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2457
ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2426
ORA-06512: at line 1
But it works with full refresh.
Is this planned, any help would be appreciated.
Thank youORA-12004: REFRESH FAST cannot be used for materialized view "string"."string" Cause: The materialized view log does not exist or cannot be used. PCT refresh is also not enabled on the materialized view Action: Use just REFRESH, which will reinstantiate the entire table. If a materialized view log exists and the form of the materialized view allows the use of a materialized view log or PCT refresh is possible after a given set of changes, REFRESH FAST will be available starting the next time the materialized view is refreshed.
http://ORA-12004.ora-code.com/
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ORA-12052: is unable to fast refresh materialized view string.string
Hello
I try to create the same xx and xx, after creating a newspaper, I get this error. Follow my structure:
When you try to create, I get the error ORA-12052:create table PEDIDO ( NR_PEDIDO NUMBER not null, DESCRICAO_PEDIDO VARCHAR2(10) ); alter table PEDIDO add constraint PEDIDO_PK primary key (NR_PEDIDO); create table ITEM_PEDIDO ( NR_PEDIDO NUMBER not null, NR_PRODUTO VARCHAR2(10) not null ); alter table ITEM_PEDIDO add constraint ITEM_PK primary key (NR_PEDIDO, NR_PRODUTO); alter table ITEM_PEDIDO add constraint PEDIDO_ITEM_FK foreign key (NR_PEDIDO) references PEDIDO (NR_PEDIDO) on delete cascade; create index INDEX_ITEM_PEDIDO on ITEM_PEDIDO (NR_PEDIDO); insert into pedido values (1, 'A'); insert into pedido values (2, 'B'); insert into item_pedido values (1, 'X'); insert into item_pedido values (1, 'Z'); insert into item_pedido values (2, 'X'); commit;
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0drop materialized view log on pedido; drop materialized view log on item_pedido; create materialized view log on pedido; create materialized view log on item_pedido; create materialized view mv_pedido_item refresh fast as select pe.nr_pedido, pe.descricao_pedido, ip.nr_produto from pedido pe, item_pedido ip where pe.nr_pedido = ip.nr_pedido;
Hello Luiz,
Thank you for provding test cases.
SQL> drop materialized view log on pedido; Materialized View log dropped. SQL> drop materialized view log on item_pedido; Materialized View log dropped. SQL> create materialized view log on pedido with rowid; Materialized View log created. SQL> create materialized view log on item_pedido with rowid; Materialized View log created. SQL> create materialized view mv_pedido_item refresh fast as select pe.nr_pedido, pe.descricao_pedido, ip.nr_produto, pe.rowid pe_rowid, ip.rowid ip_rowid from pedido pe, item_pedido ip where pe.nr_pedido = ip.nr_pedido; Materialized view created. BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production 1 row selected.
Concerning
Peter -
Randomization of materialized view refresh rate
Hi, I have several materialized view is refreshed every hour.
Now, I add a few more, and when the refresh occurs, it must now once more because it made the 9 materialized view update.
I like to shoot at random a little time between refresh.
I thought I would try something like this:
in my create materialized view, instruction, but it seems that such a method is not allowed.NEXT sysdate+(round(dbms_random.value(0.8,1.2),2)/24)
Is there another way to do it or to take care of the performance of refresh in other ways?Not sure what you mean.
I'll change the frequency of refresh a bit, so I will not wait too long to see an effect ;):
SQL> select * from v$version where rownum = 1 / BANNER -------------------------------------------------------------------------------- Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production 1 row selected. SQL> create or replace view timer as select sysdate + (round (dbms_random.value (0.8, 1.2), 2) / 24/60) t from dual / View created. SQL> create materialized view mv_emp refresh complete on demand start with sysdate as select * from emp / Materialized View created. SQL> declare x number := 100; begin sys.dbms_job. isubmit (job => x, what => 'dbms_refresh.refresh(''MV_EMP'');', next_date => sysdate, interval => '(select * from timer)', no_parse => false ); sys.dbms_output.put_line ('Job Number is: ' || to_char (x)); commit; end; / Job Number is: 100 PL/SQL procedure successfully completed. SQL> select sysdate, mview_name, last_refresh_date from user_mviews where mview_name = 'MV_EMP' / SYSDATE MVIEW_NAME LAST_REFRESH_DATE --------------------- ------------------------------ --------------------- 03.03.2010 14:53:49 MV_EMP 03.03.2010 14:53:49 1 row selected. SQL> exec dbms_lock.sleep(30) ---- wait a bit and see PL/SQL procedure successfully completed. SQL> select sysdate, mview_name, last_refresh_date from user_mviews where mview_name = 'MV_EMP' / SYSDATE MVIEW_NAME LAST_REFRESH_DATE --------------------- ------------------------------ --------------------- 03.03.2010 14:54:19 MV_EMP 03.03.2010 14:53:53 1 row selected.
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Fast refresh materialized view problems
I have two databases (A and B).
In A database, user NICK has a table called COLOUR_MASTER.
Also in this database, NICK issues creating materialized command newspaper view colour_master with the primary key, including the new values (and Yes, there is a primary key defined for this table)
In database B, there is a link of database called A_LINK, connect, Nick, identified by password using 'dbA ';
In database B, user IAN also creates a materialized view CM_MV cool off quickly in select * from colour_master@A_LINK
This statement is done correctly, and there are several million lines in CM_MV when it's done.
Immediately, IAN issued this command:
Start
dbms_mview. Refresh ('CM_MV');
end;
.. .and after a small pause, it gets the error
ORA-12008: error path refresh materialized view
ORA-02068: following sever error of A_LINK
ORA-03113: end of file on communication channel
One more + "select count (*) of colour_master@A_LINK" + subject immediately manages to return the correct number of records in the database so A 3113 is a bit misleading, I think that, in this case have crash, the database remains accessible at all times, there is no network problem (database A and B are both located in the same server so it of not like I'm trying of) connect to halfway around the globe).
The only thing I can think is that there is a permissions issue causes this error. The creation of MV because is made via a link, it is not a problem of IAN see all appropriate, but once the updates come into play, it is perhaps.
Any who can shed light on why I can't do the fast refresh from the view, I can create joyfully, please?I'm surprised no one asked you to do what is obvious: try to do a select * from colour_master@A_LINK, without that being wrapped in a create materialized MATERIALIZED view. Just do a simple select * from...
My bet is that you will get an error ORA_22992 can not use selected from the remote tables LOB Locators . And if you can't do a simple select * in a remote table, I suspect that you can reasonably expect Fireworks when you try to create or refresh a view materialized on such a thing!
Here's a quick test:
In the 1 database:
=========SQL> create table A (col1 varchar2(2), col2 clob); Table created. SQL> alter table A add constraint A1 primary key (col1); Table altered. SQL> insert into A values ('AA','This is an entry into a clob column'); 1 row created. SQL> commit; Commit complete. SQL> create materialized view log on A with primary key including new values; Materialized view log created.
In the database 2
=========SQL> connect ims_global/v0yager1@ussd Connected. SQL> create materialized view B refresh fast as 2 select * from A@remotedb_link; Materialized view created. SQL> exec dbms_mview.refresh('B'); BEGIN dbms_mview.refresh('B'); END; * ERROR at line 1: ORA-12008: error in materialized view refresh path ORA-02068: following severe error from REMOTEDB_LINK ORA-03113: end-of-file on communication channel ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2251 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2457 ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2426 ORA-06512: at line 1 SQL> drop materialized view B; Materialized view dropped. SQL> create materialized view B refresh fast as 2 select col1 from A@ims_link; Materialized view created. SQL> exec dbms_mview.refresh('B'); PL/SQL procedure successfully completed.
Which seems to reproduce your problem rather well, I think.
I don't know if there is no work around for this. I mean, obviously you can't miss the CLOB column in your statement of 'create a MV' as I just did, but I don't know if you're still allowed or expected to be able to create a MV on lob columns and that such and such correction will allow you to do. Maybe someone else can provide this information.
But at least you won't have to play Russian roulette with your init.ora parameters!
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Hello
I had created a materialized view, it refreshes every 3 minutes. At the end of 3 minutes next time we are accessing the old records of materialized view should be deleted. Can someone help me with this query...
create or replace materialized view deptd_mvu refresh fast on commit start with sysdate next sysdate + 3/(60*24) as select * from deptd;
969052 wrote:
No, my query shows all data are there is no error in my query? can u help me# It is not a mistake on your part of the implementation or Oracle. Error lies in understanding.
Materialized view appeared in SELECT * FROM DEPT; So, it must take all the data that are available in the Dept table each time it is regenerated.
What you intend to do is force the MView to choose the data "Modified" of table DEPT. Is not possible, unless you have some distinctive sign that the MView should be checked.
For Eg :-(just an idea that I did not test this)
Adding another column to identify records updated the: -.
alter table dept add is_modified varchar2(1) default 'N';
MView create instruction me altered as
select * from dept where is_modified = 'Y';
Write a trigger that sets the column IS_MODIFIED 'Y', each time that a record is inserted or updated. Don't worry about the deleted records (if this isn't a Soft Delete) as MView does not see records that are not present in the master table.
You simply need to ensure that, whenever the MView is refreshed, the IS_MODIFIED the Department table must be set to 'n', so that it does not display a false positives.
Maybe you are looking for
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Need help now for the live installation
Need help now for the live installation