Materialized View Broken Alert Script

Sep 2, 2013

Send me the M-View broken alert script? as i need to enable M-View broken alert script in my crontab. I need to create a monitoring script that will send an alert when there is any M-View failed in my DB.

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Server Administration :: How To Change Existing Materialized View To Normal View

Jan 17, 2013

can we change the existing materialized view to normal view? if yes how?

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Creating Materialized View On Remote Simple View

Dec 11, 2012

I'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?

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SQL & PL/SQL :: Materialized View - Table Or View Does Not Exist

May 2, 2012

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).

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SQL & PL/SQL :: Difference Between View And Materialized View

Apr 26, 2011

difference between view and materialized view?

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SQL & PL/SQL :: Difference Between View And Materialized View?

Aug 12, 2013

what 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?

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SQL & PL/SQL :: Materialized View

Jul 7, 2010

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.

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PL/SQL :: Unable To Drop A Broken Job

Jan 3, 2013

i want to drop a broken job but it is taking long time why?

i am using below syntax:

begin
dbms_job.broken(job=> 345,FALSE);
commit;
end;
/

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Creating Materialized View Log

Feb 7, 2013

There 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?

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STALE Materialized View?

Jul 14, 2011

i 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

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Materialized View Refresh?

Sep 10, 2010

A 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.

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SQL & PL/SQL :: Materialized View Redefinition

Dec 11, 2008

I 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.

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SQL & PL/SQL :: Indexes On Materialized View

Mar 16, 2011

Why we can create indexes only on materialized view and not on normal views?

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SQL & PL/SQL :: Syntax Of Materialized View?

Sep 9, 2010

Can u explain the syntax of materialized view??????

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SQL & PL/SQL :: How Much Space Is Used By The Materialized View

Oct 20, 2010

How can we find how much space is used by the materialized view.

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SQL & PL/SQL :: Oracle Materialized View

Jul 5, 2011

I 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?

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Analyzing Materialized View

Oct 26, 2012

I 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?

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PL/SQL :: Materialized View Creation?

Jun 15, 2013

I 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]....

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SQL & PL/SQL :: Materialized View Recreate

Oct 2, 2012

we 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?

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Invalid Materialized View?

Aug 20, 2013

some 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.

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SQL & PL/SQL :: Materialized View Over DBLink

May 7, 2010

I 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.

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Broken DB Links - Call Fails With A TNS

Mar 28, 2012

I've begun experiencing a very odd issue with one instance and all of their their db links. When I'm connected via telnet to the unix server, and I connect:

connect myuser/password via sql plus, I connect fine, and the link works.

but when I connect this way:

connect myuser/password@db.tnsname.entry.com using the TNS name specified, I again connect fine but the link calls fails with a TNS cannot resolve service name issue.

This is an existing instance with existing db links, but I repeat the issue on this machine alone with new links. the fully qualified name is the same name entry I'm using to create the link, both when it succeeds and when it fails. This is an 11g instance and the TNSnames file is in the ASM home.Also, i f I connect

connect sys as sysdba I get success as well. This behavior happens with both private and public database links. I'm not aware of any setting changes within this instance, and I've modified (after backing up) the TNSNames file with values from another that works perfectly well. Connecting via remote sqlplus or other JDBC connections gives the same error. Success connecting locally but failure connecting to DB Links when I'm remote. Connecting to the instance shows no issue.

Another instance on the network? An IP config issue in DNS? We have 100's of servers so it's needle in a haystack time. Can I run some sort of trace to see what it's calling to when it works and when it doesn't? (It selects another db's single table and I've confirmed the target is correct and the data is correct).

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Materialized View Refresh Time?

May 24, 2011

I created a materialized view which takes around 6 hrs to refresh. way to reduce the refresh time.The query is:

create materialized view ERC_DAILY_DISBURSMENT_MIS_VIEW
refresh complete on demand as
with disb_qur as (select e.account_no,
e.journal_dt,
e.instr_amt disbursed_amt,

[code]....

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10g Materialized View Using A Database Link

May 20, 2009

In Oracle 10gR2.If a materialized view uses a database link for the query in order to create a snapshot of data on a remote instance, does the name of the database link have to be an entry in the tnsnames.ora file?

The following link suggests not, but is not version specific: Materialized View - Oracle Wiki FAQ

However, the following 11g documentation suggests that the database link name must be the same as the global name of the target database.URL..
I can't any info specific to 10gR2.

We have three instances. Our application metadata is stored in a schema in B.METADATA. There is a shell schema (B.METADATASHLL) that provides access to the tables to remote applications.

On instance A, we have a shell schema (A.METADATASHLL) that creates materialized views as follows:
CREATE DATABASE LINK METADATA_PRIME
CONNECT TO metadatashll IDENTIFIED BY password
USING 'B';

Our materialized view is created using the query SELECT * FROM METADATA.APPLICATIONS@METADATA_PRIME WHERE Application = 'A';

The query works, but the materialized view does not.I'm being told that the database link has to be named B as follows

CREATE DATABASE LINK B
CONNECT TO metadatashll IDENTIFIED BY password
USING 'B';

Which means that I can only have one public link to instance B, and I'm in a pickle if I create a second application (which I have) using the same model).

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Pipe Function And Materialized View

Feb 27, 2011

Pipe Function and Materialized View.

There is a materialized view:

CODECREATE MATERIALIZED VIEW MY_MAT_VIEW NOLOGGING
REFRESH FORCE
START WITH SYSDATE NEXT SYSDATE + 5/24/60
AS
SELECT F1,
F2,
F3
from SOMETAB;

And there is a pipelined function:

CODEDROP TYPE MY_MAT_VIEW_table_type;
DROP TYPE MY_MAT_VIEW_row_type;

CREATE TYPE MY_MAT_VIEW_row_type AS OBJECT
(
F1 number,
F2 varchar2(100),
F3 date
[code].......

I've noticed that when materialized view is near to be refreshed (every 5 minutes) there is some "delay" in getting result sets using this query:

SELECT *
FROM TABLE(FN_GET_MY_MAT_VIEW(100)) a;

And when the refresh is finished the result set returns immediately.

Question.

Is there a way to avoid such "delay" while materialized view is refreshing?

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Materialized View On Nested Table?

Dec 2, 2010

I try to do this:

CREATE MATERIALIZED VIEW MV_NESTED_DATA
NOCACHE
LOGGING
NOCOMPRESS
NOPARALLEL
BUILD IMMEDIATE
USING NO INDEX
REFRESH COMPLETE
ON DEMAND
START WITH ROUND(SYSDATE)
NEXT ROUND(SYSDATE) + 1
WITH ROWID
AS
select NESTED_TABLE_FIELD from MY_TABLE@Y_DB_LINK;

where NESTED_TABLE_FIELD is a nested table stored as T_NESTED_TABLE

And I get the error: ORA-12014: table 'T_NESTED_TABLE' does not contain a primary key constraint

Why should it if I try to create a MV with "WITH ROWID" refresh option and not "WITH PRIMARY KEY" one?

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Materialized View Identifying Modifications

Sep 5, 2013

I am new to Oracle and I inherited an existing database. I have a materialized view on a table that uses a materialized view log. I have been asked to see if it is possible to categories the rows by change type (inserted, updated or deleted) and populate another materialized view or table accordingly. If this is possible then how can it be achieved.

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To Store Data In Materialized View

Apr 14, 2011

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?

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Materialized View Is Not Doing Fast Refresh

Jun 20, 2011

i have created a fast refresh materialized view but it is not performing fast refresh or even complete refresh.Then i have checked my materialized view capabilities then in mv_capabilities_table i got a message that materialized view log is newer than old .

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Materialized View Log On DBLink Table?

Aug 6, 2010

DB1: Sql Server
DB2: Oracle 11g

Is it possible to create a MV log against table@DB1? If not, then am I limited to refresh complete if I need to create MVs against @DB1?

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