Server Administration :: How To Change Existing Materialized View To Normal View
Jan 17, 2013can we change the existing materialized view to normal view? if yes how?
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PL/SQL :: Difference Between Materialized And Normal View?
Aug 29, 2012the difference in detail with an example.
View 5 Replies View RelatedServer Administration :: Materialized Aggregate View Index?
Jun 27, 2012When you create a MAV, you automatically get a hidden column and an index. Here's an example,drop user jon cascade;
grant dba to jon identified by jon;
conn jon/jon
create table emp as select * from scott.emp;
create materialized view mv1 enable query rewrite as
select deptno,sum(sal) from emp group by deptno;
select object_name,object_type from user_objects;
select index_name,column_name from user_ind_columns where table_name='MV1';
select column_name,hidden_column from user_tab_cols where table_name='MV1';
select deptno,"SUM(SAL)",sys_nc00003$ from mv1;
Server Administration :: ORA-00054 - Drop MATERIALIZED View Log?
Jan 17, 2013SQL> drop MATERIALIZED view log on afccv.tbl_voicechat;
drop MATERIALIZED view log on afccv.tbl_voicechat
*
ERROR at line 1:
ORA-00054: resource busy and acquire with NOWAIT specified or timeout expired
i dont want to kill the sessions or anything is there any way to set prority to do this task?
PL/SQL :: Materialized View Log Used As Change Data Capture
Jan 31, 2013I 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.
Creating Materialized View On Remote Simple View
Dec 11, 2012I'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?
SQL & PL/SQL :: Materialized View - Table Or View Does Not Exist
May 2, 2012I 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).
SQL & PL/SQL :: Change View Definition When Select Is Running On That View
Apr 25, 2012We wrote one data load process to load GZ files into Database.during process we will change client facing view definitions to backup table so that we can work on base tables.
This view definition changes are related to FROM and WHERE clause (not columns/type). during load process, client/user may connect to current server and accessing these views. My question is what will be the reflection of changing view definition while user is accessing view?
I created a scenario-
STEP1: Created a view-
create or replace view view_01 as
select object_name from dba_objects union all
select object_name from dba_objects union all
select object_name from dba_objects union all
[code]....
View definition is replaced by new definition while select is executing on that view. select returned number of records as per view definition one.
SQL & PL/SQL :: Difference Between View And Materialized View
Apr 26, 2011difference between view and materialized view?
View 1 Replies View RelatedSQL & PL/SQL :: Difference Between View And Materialized View?
Aug 12, 2013what 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 RelatedServer Utilities :: Materialized View With Nologging
Jul 20, 2012I have a live OLTP system where i have delived a solution for performance tunning , as a part of performance tunning i have created a MV which as below. I have created MV with no logging option as this will be refreshed at 3 min interval. i have compared the AWR report prior to deploy MV and after deployment. After deployment it have increased the redo by 4 times. Is there any way i can reduce the redo and what is wrong with mv with nologging.
CREATE MATERIALIZED VIEW "OVSD"."GSP_RELATEDEVENTS1"
NOLOGGING
REFRESH FORCE
--START WITH SYSDATE NEXT SYSDATE + 3/1440
AS
[code]....
Server Administration :: How To Get Ddl Of View
Apr 4, 2012 I can desc the view,but i can not get the ddl of the view,how can i do?
SQL> desc oss03.VW_OSS_PM_MONTH_3_201112;
Name Null? Type
----------------------------------------- -------- ---------------------------
RECDATE NOT NULL NUMBER(8)
USERNUMBER NOT NULL VARCHAR2(32)
MODULEID NOT NULL NUMBER(8)
CHANNELID NOT NULL NUMBER(8)
OPERID NOT NULL NUMBER(10)
CONTENTID NOT NULL NUMBER(10)
SERVICEID NOT NULL NUMBER(10)
OPERTYPE NOT NULL NUMBER(10)
PROVCODE NOT NULL NUMBER(5)
AREACODE NOT NULL NUMBER(5)
SERVICEITEM NOT NULL VARCHAR2(20)
ORDERTYPE NOT NULL NUMBER(8)
[Code]....
SQL & PL/SQL :: Materialized View
Jul 7, 2010I 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.
Server Administration :: Subpartition Template View
Oct 12, 2011Are there some oracle views about subpartition template?
View 3 Replies View RelatedServer Administration :: Create View With Parameters?
Oct 26, 2011 I created a view with parameters l_id and l_name, how can i find them in oracle view?
Create Table tb_test
(
Id Number,
Name Varchar2(64)
);
Create Or Replace View vw_tb_test(l_id,l_name)
As
Select Id,Name From tb_test;
Server Administration :: System View Cannot Found
Feb 22, 2012There are some sys views can not found. why?
SQL> connect / as sysdba
Connected.
SQL> show user;
USER is "SYS"
SQL> desc dba_users;
ERROR:
ORA-04043: object dba_users does not exist
Creating Materialized View Log
Feb 7, 2013There are 2 databases, database A and database B. Database A is Oracle 11.2.0.2 which runs on linux and Database B is Oracle 11.2.0.2 which runs on windows xp machine. In database A, there are 100's of tables which are being updated every 10 minutes or 15 minutes. For reporting purpose, the developer wants to run report for the tables. But since database A is being updated every now and then, generating reports takes almost 15 to 20 minutes. So the reports can be generated in Database B. Once in a day the database B should have the updated data from database A so that the reports can be generated in database B with less time. What could be the best solution for the database B to have the updated data on daily basis from database A in oracle?
View 3 Replies View RelatedSTALE Materialized View?
Jul 14, 2011i have created FAST refresh materialized view.it is eligible for FAST refresh because when i executed SELECT * FROM USER_MVIEWS i could see FAST_REFRESHABLE=DIRLOAD_DML and STALENESS=STALE and it is not getting refreshed(through DBA_JOBS). Why it is in STALE status and how to resolve it. and one of my materialized views is in NEEDS_COMPILE status
View 3 Replies View RelatedMaterialized View Refresh?
Sep 10, 2010A scheduler job is there to refresh some materialized views. All the views are run under single job name. Some mviews are not refreshing and those are not refreshing in the next run too.if we run those mviews manually then they are working fine from then . after some days those views which i told before are not refreshing and this happens frequently and i check the job_run_details views also and i am not seeing any errors in that.
View 6 Replies View RelatedSQL & PL/SQL :: Materialized View Redefinition
Dec 11, 2008I need redefine a Materialized View (add some columns). I try it with:
drop materialized view TCPIP preserve table;
ALTER TABLE TCPIP ADD (SUM_IP_OUT_OF_SEQ NUMBER)
/
ALTER TABLE TCPIP ADD (SUM_IP_OUT_OF_SEQ NUMBER)
/
and than create a new MV:
CREATE MATERIALIZED VIEW TCPIP
ON PREBUILT TABLE USING NO INDEX NEVER REFRESH ENABLE QUERY REWRITE as
SELECT ...
But with Oracle error: ORA-12060: shape of prebuilt table does not match definition query
I check the new MV definition, it is contain the 2 added columns.
SQL & PL/SQL :: Indexes On Materialized View
Mar 16, 2011Why we can create indexes only on materialized view and not on normal views?
View 8 Replies View RelatedSQL & PL/SQL :: Syntax Of Materialized View?
Sep 9, 2010Can u explain the syntax of materialized view??????
View 1 Replies View RelatedSQL & PL/SQL :: How Much Space Is Used By The Materialized View
Oct 20, 2010How can we find how much space is used by the materialized view.
View 1 Replies View RelatedSQL & PL/SQL :: Oracle Materialized View
Jul 5, 2011I have created a Materialized View (MV) and within the MV DDL have included a statement as per below. However, the MV does not seem to be refreshing on a daily basis. I can see the job in dba_jobs table. So the question, is there some system setting i need to execute or create in order for Oracle to know that it needs to run the Job defined in the dba_jobs table on a daily Basis?
View 8 Replies View RelatedAnalyzing Materialized View
Oct 26, 2012I have created materialized view which hold few million records.Should i have to analyze the view and compute the statistics after i create the materialized view?
Also, just in case i need further indexing, should i have to take the statistics for the table again?
PL/SQL :: Materialized View Creation?
Jun 15, 2013I am running into an issue and trying to ascertain issue. Scenario:I have 2 MV creation scripts. The MV is supposed to get populated by connection from schema to another schema USING DB Links.Basically, SAME HOST, SAME RAC DATABASE, just separate schemas. The MV creations are just hanging. I see NO alert log mentions. I ran a SQL trace and yes,
I see: call count cpu elapsed disk query current rows------- ------ -------- ---------- ---------- ---------- ---------- ----------Parse 0 0.00 0.00 0 0 0 0Execute 1011 1.40 73.80 0 0 0 0Fetch 1010 1.08 317.57 0 0 0 1010------- ------ -------- ---------- ---------- ---------- ---------- ----------total 2021 2.49 391.38 0 0 0 1010 Misses in library cache during parse: 0Optimizer mode: ALL_ROWSParsing user id: 109 (recursive depth: 2) Elapsed times include waiting on following events: Event waited on Times Max. Wait Total Waited ---------------------------------------- Waited ---------- ------------ SQL*Net message to dblink 2022 0.00 0.00 SQL*Net message from dblink 2021 0.46 242.58
Understandable, but when I do a selective query, the results come back pretty much within 5 seconds.DB version is 11.2.0.3. Is there a BUG that I should know about?
Here is a snippet:
CREATE MATERIALIZED VIEW "SCHEMA"."MV_NAME_MV" USING INDEX REFRESH COMPLETE ON DEMAND AS (SELECT distinct mapguide_persons(pl.location_code) "FULL_NAME_COSTCENTER",mapguide_jobemp(pl.location_code) "TRUNCNAME_JOB",mapguide_empnum(pl.location_code) "FULLNAME_EMPNUMBER_PHONE",mapguide_english(pl.location_code)
[code]....
SQL & PL/SQL :: Materialized View Recreate
Oct 2, 2012we have a materialized view (in Oracle 11g), usually this MV we easily drop and recreate it.
But last few days, i am trying to drop a MV, but running a long time but no result and it keeps running. not dropped also.
Bcos, db performance is good since we tried to a view using script, it is fine. Problem seems only with Materialized view.
where and how to check what is the issue?
Invalid Materialized View?
Aug 20, 2013some of MVs become invalid (yes, we did app upgrade over the weekend). I looked on every object reference in the MV, all permissions - can't find anything.I dropped MVs and created them no errors. Status changed to VALID. I decided to re-COMPILE them (because I saw public synonyms for MVs as INVALID). After compilation status changed back to INVALID.Oracle 11.2, Solaris 10.
View 2 Replies View RelatedSQL & PL/SQL :: Materialized View Over DBLink
May 7, 2010I have got a materialized view which is created over a dblink as below:
CREATE MATERIALIZED VIEW CRIMEREPORTODSV
TABLESPACE ODS_DATA
BUILD IMMEDIATE REFRESH FAST AS
(SELECT * FROM CRIME_INT@CRISP);
This is all fine and works apart from any changes to the source table (CRIME_INT) isn't reflected unless I perform a refresh. Whereas I want any changes to be reflected straight away. I have had to use a Materialized view in this case as one of the columns in the source table is a CLOB and Oracle won't allow creation of a view with a CLOB field over DBLINK.
Server Administration :: How To View Table Constraints Information
Mar 13, 2010I know that you can view all constraints in a table using $USER_CONSTRAINTS or $USER_INDEXES view. What i find difficult is that the information in those views is not really well presented.
I find it very hard to follow. For example, just to find out which columns are foreign keys and which tables they refer to is really tedious. Is there a simpler way to view all the constraints especially foreign keys of a table and including which table columns they refer to in the child table.
I like to see a diagramatic representaion of all the tables involved so i like to see both the parent and the child tables, which columns are related and using which FKs etc. is there an easier way to view this information?