1.As we can create materialized view for accessing data from other schema but same database. will it be effective or it will act as a normal view.
2.Will materialized views can be created in Fast mode for the above scenario?
How I can create a Materialized View without having any data in it.
For e.g.
I create a Materialialized View based on a View.
CREATE MATERIALIZED VIEW test_mv
REFRESH FORCE ON DEMAND
AS
SELECT * FROM test_view
In the above case the data fetched by the view test_view gets stored in the Materialized View test_mv. Suppose I want materialized view test_mv to get created with all the columns of test_view but not the data. I will refresh the materialized view test_mv later for data as and when required.
What shall I do for immidiate formation of materialized view test_mv without data.
How to create index on materialized view which is refreshed daily basis.
View 3 Replies View Relatedhow to create materialized view on partition table?
View 1 Replies View RelatedWe are using Oracle 10g rel 2. The replication is setup on 1 server which is in City A, and the snapshot server is in City B.
City A .
Create materialized view log on table-a
with primary key
including new values.
City B database.
Create user test_rep identified by test
grant connect, resource, create any materialized view , table, view , procedure to test_rep.
Create materialized view city-A_db_MV
refresh fast
select * from cityA.Tablea@city-Adb
When i select from city-A_db_MV, it showed the complete table-A of city-A database.
Now if we make any changes to City-A table at the Master site, will it be propagated automatically to the MV site.
I guess we need to create jobs to push / or refresh fast .. isnt it. But exactly how to do it is a question.
Secondly if we make a replication group at Master site at city-A db, how do we refresh that Group and how to monitor whether it is refreshing on time or not? do we need to see the jobs every now and then.
but still a lot of questions unanswered, even though i had read the documents earlier.
1-The MView was created without identifying that after what interval it will be fast refreshed.
2- How to Manually refresh it. Does it support On Commit, I think it is not.
3- Where should be we make a group and then add the table to that group and refresh that group.
Should this group belongs to the Master Site or to MV site?
i am trying to create materialized view but it give me insufficient privilege i give it all grant and i run it from sys it give the same.
View 3 Replies View RelatedI have to create a materialized view for a table which does not have index on any field.
While creating a Mview i am getting an error "TABLE DOES NOT HAVE THE PRIMARY KEY CONSTRAINT".
application developers do not want to create an index on the base table onto which MView is to be created.
is there any way to create a materialised view for the table without index, or is it necessary to have the index on the base table before creating MView on it.
CREATE MATERIALIZED VIEW Matview1
NOLOGGING
NOCACHE
NOPARALLEL
REFRESH COMPLETE ON DEMAND
START WITH sysdate
NEXT sysdate + 1
WITH ROWID
ENABLE QUERY REWRITE AS
select Query;
if i run select query it works fine .. also the user has create materialized view and query rewrite privs .. not sure why i am getting insufficient privileges error still ..
Create Materialized view with Refresh on commit example. with create Log file example.
View 6 Replies View RelatedI need to create a materialized view with a clob column based on a varchar2 column of a table.This is because in the mv the clob column data gets appended one after another.
View 2 Replies View RelatedI'm trying to create materialized view, successfully create logs for all the tables involved.
CREATE MATERIALIZED VIEW LOG ON tbJournal
WITH ROWID, SEQUENCE (tabid, companyid, storelocid, tabstatus, linetype)
INCLUDING NEW VALUES;
CREATE MATERIALIZED VIEW LOG ON TBTABS
WITH ROWID, SEQUENCE (TSTAMP, COMPANYID, NUMGUESTS, POSITIONID, STORELOCID, TABSSTATUS)
INCLUDING NEW VALUES;
[code]....
The result is ora-12015: cannot create a fast refresh materialized view from a complex query
It does work fine if I remove
AND EXISTS (SELECT 1 FROM tbJournal J
WHERE j.tabstatus NOT BETWEEN -6 AND -4
AND j.linetype = 1
AND T.tabid = J.tabid
AND T.companyid = J.companyid
AND T.storelocid = J.storelocid)
from the where clause
I have a PL/SQL procedure which gathers data from multiple places as well as calculates some data. I want to store all this in a materialized view.
So, I created an object type (I've shortened the definitions):
CREATE OR REPLACE TYPE mf_record_type AS OBJECT
(identifier VARCHAR2(6),
name VARCHAR2(100));
Then created the table type of the object:
CREATE OR REPLACE TYPE mf_table_type IS TABLE OF mf_record_type;
Then in the stored procedure defined a variable of the table type:
v_mf_record mf_table_type := mf_table_type();
Then I loop and populate the record type:
v_mf_record.EXTEND(1);
v_mf_record(x) := mf_record_type(v_rec.identifier, v_mf_detail.name);
When all that is done I try and create the materialized view:
EXECUTE IMMEDIATE ('CREATE MATERIALIZED VIEW mf_snapshot_mv AS
SELECT * FROM TABLE (CAST (v_mf_record AS mf_table_type))');
ORA-00904: "V_MF_RECORD": invalid identifier
Am I doing something wrong here? Can't I create the materialized view based on something other than a physical table?
I have got a simple materialized view question.
I have a view which is taking long time to get back results and this view is being used in various user queries. I noticed that the SQL of the view access some tables, data of them changes rarely. So it makes sense to retrieve that data in a materialized view and somehow re-use it.
My question is how can I use the materialized view and it's data from a query.
I have big source tables to load in a data warehouse. We are in a full Oracle environment. So I need to extract only delta since the last extract.
I need to capture even deleted rows from the source table.
I have tested the following solution:
- declare a materialized view log on the source table
- load the content on this view log in my ODS
- empty this view log
- load my DWH with the captured delta
It is very simple and seems to work perfectly. I am just confused by the fact that nobody seems to have implemented such a solution.
I have created a materialized view and also a normal View, which has 3 tables used in both the views, when inserted new records it reflects in a normal view but when i select the materialized view i cant see the updated data.
here is the materialized view i created;
CREATE MATERIALIZED VIEW pct_sales_materialized
BUILD IMMEDIATE REFRESH ON DEMAND
ENABLE QUERY REWRITE
AS
SELECT A.DEP_NAME,B.EMP_ID,C.EMP_NAME
FROM department_head A,department_child B,emp_detail C
WHERE A.DEP_ID = B.DEP_ID
AND B.EMP_ID = C.EMP_ID
I have a PL/SQL procedure which gathers data from multiple places as well as calculates some data. I want to store all this in a materialized view.So, I created an object type (I've shortened the definitions):
CREATE OR REPLACE TYPE mf_record_type AS OBJECT
(identifier VARCHAR2(6),
name VARCHAR2(100));
Then created the table type of the object:
CREATE OR REPLACE TYPE mf_table_type IS TABLE OF mf_record_type;
Then in the stored procedure defined a variable of the table type:
v_mf_record mf_table_type := mf_table_type();
Then I loop and populate the record type:
v_mf_record.EXTEND(1);
v_mf_record(x) := mf_record_type(v_rec.identifier, v_mf_detail.name);
When all that is done I try and create the materialized view:
EXECUTE IMMEDIATE ('CREATE MATERIALIZED VIEW mf_snapshot_mv AS
SELECT * FROM TABLE (CAST (v_mf_record AS mf_table_type))');
ORA-00904: "V_MF_RECORD": invalid identifier
Am I doing something wrong here? Can't I create the materialized view based on something other than a physical table?
I have created a MV on Oracle 10gR2 using dblink. Source database is AS400 DB2.MV script:
CREATE MATERIALIZED VIEW MV_BU
TABLESPACE TB_XXX
PCTUSED 0
PCTFREE 10
INITRANS 2
MAXTRANS 255
STORAGE (
[code]...
Above query should be refreshing the data every minute but I realized that its not doing it.
I have two servers:
10g server 10.1.4.30
11g server 10.1.4.32
I have a table testing_mview on 10g which do not have any primary key. I have created MV log for it:
CREATE MATERIALIZED VIEW LOG ON testing_mview WITH ROWID;
Materialized view log created.
My requirement is
1) if there is an UPDATE/DELETE/INSERT on testing_mview, it should be writen to MATERIALIZED VIEW LOG (this has been achieved)
2) Materialized view testing_mview1 of 11g on server 10.1.4.32 should pull these changes on a scheduled basis ( I have created the database link ORCL10R2 here from 11g to 10 g)
On 11g:
SQL> create database link ORCL10R2 connect to omig identified by pswd using
'(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.1.4.30)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = ICS3)
)
)';
Database link created
SQL> create materialized view testing_mview1 REFRESH FAST with rowid as select * from testing_mview@ORCL10R2;
create materialized view testing_mview1 REFRESH FAST with rowid as select * from testing_mview@ORCL10R2
*
ERROR at line 1:
ORA-04052: error occurred when looking up remote object SYS.DBMS_SNAPSHOT@ORCL10R2
ORA-00604: error occurred at recursive SQL level 2
ORA-06544: PL/SQL: internal error, arguments: [55916], [], [], [], [], [], [], []
ORA-06553: PLS-801: internal error [55916]
ORA-02063: preceding 2 lines from ORCL10R2
is it possible to base a Materialized View on results returned from a stored procedure?If not, do you see any other way except of filling a table with data from the stored procedure and then basing the MV on it?
View 4 Replies View RelatedI am using the sid of v$mystat to create a unique filename in my pl/sql procedure.
I have granted access to v$mystat to the user that is accessing it from system user as:
SQL>GRANT SELECT ON V_$MYSTAT TO ar;
Grant succeeded.
SQL> commit;
Commit complete.
now when i login as user ar and do a select on v$mystat it works fine:
SQL> select sid from v$mystat WHERE ROWNUM = 1;
SID
----------
290
However, when i do the same from my PL/SQL procedure it throws an error saying :
SQL> @FILECREATE
53 /
Warning: Function created with compilation errors.
SQL> show errors
Errors for FUNCTION FILECREATE:
LINE/COL ERROR
-------- -----------------------------------------------------------------
22/8 PL/SQL: SQL Statement ignored
22/35 PL/SQL: ORA-00942: table or view does not exist
My PL/SQL function can be found as an attachment.
can we change the existing materialized view to normal view? if yes how?
View 2 Replies View RelatedI'm trying to create a Materialized View on a remote database from a simple view. The reason is, the data owners don't want to grant explicit tables privileges to external subscribers.
A new schema is created to publish data in the form of a view. I've created mlogs on the master tables, and granted them to the subscriber, but it's still complaining about a missing primary key on the view. A primary key does exist in the master table.
Is there another work around for this situation without having to work inside the data sources' environment?
There is a requirement to make a table data in a database (eg: HR database) available in another database (eg: EMP database), instead of accessing it using database link. In EMP database(where data needs to be cloned), data will only be queried and no write operation will be done. Data in remote database (eg: HR DATABASE) will be occassionally fully truncated and reinserted. The plan is to do a similar truncate and reinsert of data (from HR database) into EMP database monthly once using dbms scheduler job. So basically data in just one table needs to be cloned in another database.
Question: For this situation, is a regular table or Materialized view the right choice to clone the table in EMP database and why? The table in HR database (remote database) is not very big.
I have a materialized view "pro_mview",I am trying to refresh the MVIEW by using the following statement.
EXEC DBMS_MVIEW.REFRESH('pro_mview','C');
But I am getting the below error.
*
Error at line 1:
ORA-12008: error in materialized view refresh path
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2256
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2462
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2431
ORA-06512: at line 1
I am able to fetch the data from that materialized view(pro_mview).
difference between view and materialized view?
View 1 Replies View Relatedwhat would be the difference between a view and a materialized view? whether DML possible on a view? i think error occurs if DML tried on a view which is a combination of two or more tables, whether DML possible on a materialized view?
View 7 Replies View RelatedWe are accessing data from the server ADM.WORLD by using DBLINK.We got the following error.
PL/SQL: ORA-04052: error occurred when looking up remote object
sysadm.PS_HP_INC_ELIG_VW@ADM.WORLD
ORA-00604: error occurred at recursive SQL level 1
ORA-28000: the account is locked
ORA-02063: preceding line from ADM
For that we checked in the server ADM.WORLD for the account the account is showing locked .After that we successfully accessed the object sysadm.PS_HP_INC_ELIG_VW@ADM.WORLD.
For next day also the account is locked.Why the account is frequently locking.
I have requirement to create materialized views. The design states to use Complete refresh. Now I am using WITH ROW_ID clause.
1. Question - what are the criteria to decide between WITH PRIMARY KEY & WITH ROW_ID clauses? I referred oracle doc, but couldn't exactly get this.
2. Background - The oracle doc mentions that - Primary key materialized views are the default type of materialized view. The master table must contain an enabled primary key constraint, and the defining query of the materialized view must specify all of the primary key columns directly.
Question - I saw some existing materialized views in my project using WITH PRIMARY KEY clause, but all of the primary key columns are not part of the Select query, but still these views are working fine, how is this possible?
3. Background - The oracle doc mentions that - Rowid materialized views must be based on a single table and cannot contain any of the following:
■Distinct or aggregate functions
■GROUP BY or CONNECT BY clauses
■Subqueries
■Joins
■Set operations
Question - But I have created a Rowid materialized view selecting data from more than one table & defining query involving outer joins. This materialized view got created & getting refreshed (complete refresh). But again this is contradicting with Oracle' statement.
is it possible to create primary key on view and use this view for creating foreign key .
View 3 Replies View RelatedCan we use this format for accesing data from other DB or Schema?
In From clause
database_name.schema_name.table_name
