Oracle materialized view more Gateway

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• Materialized Oracle view | Deleting records, Oracle materialized view

  One question reg Materialized views.
  
  If as part of the interview of the Source database, we remove some (older) recordings, the materialized view will also be updated with the deletion?
  
  I believe that the answer is Yes. In this case make sure that deletion is not the case?
  
  Is there anyway that we'll stop MView update to delete records that is inserted once even if we remove the same records in the source DB?

  This is a common scenario, especially with materialized views that summarizes the detail data where you want to keep the summary but not the detail, and it is discussed in the documentation.

  The technique is to make the MV refresh on request, delete the data in the detail tables and the CONSIDER_FRESH procedure to prevent the changes propagating to the MV. You will probably find it in the docs by searching on DBMS_MView.Consider_Fresh. There are a few caveats to note, in my opinion.

• Oracle Materialized view... Auto-refresh

  Hello
  
  I want to refresh my view daily Oracle Materilized @ night mi... I am a new Bee and need your help in detail
  
  Thank you

  DBMS_JOB
  DBMS_SCHEDULER

• Materialized views Oracle | Reporting

  I have a requirement as follows:
  
  Requirement:
  We must create a Reporting DB to be used for information and a transactional database will be in separate host. Fundamentally, he need to extract data from a set of transactional DB tables and move to the Reporting DB schema at adequate intervals.
  
  
  We may have to get a different column data in different tables and store it in a single table / several reports DB tables.
  
  
  Solution (Please confirm):
  
  I intend to use Oracle materialized views in the same host as transactional DB to next part of requirment
  
  "We may have to get a different column data in different tables and store it in a single table / several reports DB tables.
  
  and then use Oracle streams to move at regular intervals of DB reports.
  
  Is this feasible?
  Or please suggest a solution.
  
  Thank you
  APPU

  We must create a Reporting DB to be used for information and a transactional database will be in separate host. Fundamentally, he need to extract data from a set of transactional DB tables and move to the Reporting DB schema at adequate intervals.

  Depending on how small and simple is your database, you can create materialized views on the Reporting DB to point to DB Transactionla through the database link.

  I intend to use Oracle materialized views in the same host as transactional DB to next part of requirment

  If are simple MVs, then let them cool off quickly. If too complex, all jobs to refresh at specific intervals.

  "We may have to get a different column data in different tables and store it in a single table / several reports DB tables.

  You will be several tables in DB report in the form of the Metrialised views

  and then use Oracle streams to move at regular intervals of DB reports.

  This combination is not necessary. You're talking about two different things at the same time.

• Recommendation for the materialized view

  Hello
  
  I am looking for Oracle Materialized View recommendation in the 9i version.
  I searched in the Oracle9i Data Warehousing Guide at http://download.oracle.com/docs/cd/B10501_01/server.920/a96520.pdf.
  Do you have any information?
  Thank you.

  Depends on what you're trying to accomplish. What would it be?

• Are materialized views in Oracle OLAP licenses. ?

  Hi all
  We use the EE Oracle 10 g 2. We try to find the list of products of Oracle 10gEE. License part materialized views in Oracle OLAP or that come with the Standard edition.
  
  Thank you

  Commerce 10.2 has a table of availability of the editing features (a SE, SE, EE) which establishes good enough differences:
  http://download.Oracle.com/docs/CD/B19306_01/license.102/b14199/editions.htm#BABJICBB

  However I don't see, documentation, its use of MV (license) is clearly defined. Basically, it seems it depends of the use of MVs.

  See, for example, Data Warehouse (syntheses) and integration - based replication. Sometimes, the documentation uses the phrase "materialized views to...» ». SQL aggregation / analytical seems to be a missing piece as well (in the current doc sets).
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14200/statements_6002.htm
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14223/basicmv.htm#i1006193
  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14226/repmview.htm

  The new 11g Cube materialized views feature is of course an OLAP option.

  And, as usual, you can find in the documentation, forums etc is almost irrelevant when it comes to licensing issues. You should see your specific contract. Talk to your sales person.

  "License issues really, really, really should be addressed to your representative commercial Oracle." Nothing we say here links to Oracle. We don't know other agreements, your organization may have with Oracle. ... explaining that "a guy on the internet with a card to play said logo is OK," probably won't do more good. »
  (borrowed from Oracle licenses VMware + Quadcore

  Published by: orafad on January 27, 2011 20:39

• Oracle Warehouse builder or materialized views

  I have a requirement as follows:
  
  Requirement:
  We must create a Reporting DB to be used for information and a transactional database will be in separate host. Fundamentally, he need to extract data from a set of transactional DB tables and move to the Reporting DB schema at adequate intervals.
  
  We may have to get a different column data in different tables and store it in a single table / several reports DB tables.
  
  
  Can someone whether to go with Oracle Warehouse builder or the materialized views for this offer please?
  Or use OWB to create and maintain the MVs.
  
  Also please me a link point to what features are available with OWB
  
  Our Oracle is installed in Solaris 10 and one who is perfect either generator warehouse Oracle or materialized views
  
  Thank you
  APPU
  
  Published by: user12094414 on October 25, 2009 21:52
  
  Published by: user12094414 on October 25, 2009 22:17

  user12094414 wrote:
  Can someone whether to go with Oracle Warehouse builder or the materialized views for this offer please?
  Or use OWB to create and maintain the MVs.

  The two are not exclusive. OWB is a tool for designing the data movement and implement updates to the warehouse.

  MVs are a tool integrated into the database in support of materialization of the current request to speed up some types of applications related to data that is availoable, perhaps after transport OWB.

  >

  Also please me a link point to what features are available with OWB

  Normal (to allow the future of mutual aid) access is

  http://OTN.Oracle.com
  -> Products (perma menu on the left): database (link)
  -> Warehouseing Bi & data (link in the middle section)
  -> Related products (product menu on the right): Warehouse Builder
  where you can get a Viewlet, whitepapers, docs, demos, tutorials, etc.

  Direct access to the page above is http://www.oracle.com/technology/products/warehouse/index.html

• Oracle 8i Materialized view

  I'm on oracle 8.1.7
  
  A few times is not automatically refresh
  
  -I want to connect view refresh time in other tables when it refreshes
  
  -wanted to know whether the necessary changes in the view script
  
  
  DROP MATERIALIZED VIEW MSIRC. IL_BRANCHES;
  
  CREATE THE MSIRC MATERIALIZED VIEW. IL_BRANCHES
  REFRESH FORCE
  START WITH TO_DATE (October 12, 2009 09:15:42 "," dd-mon-yyyy hh24:mi:ss')
  NEXT sysdate + 1/1440
  WITH THE PRIMARY KEY
  ACTIVATE THE QUERY REWRITING
  AS
  / * In format on 2009-10-12 13:44:16 (PS5 v5.115.810.9015) * /.
  SELECT 'IL_BRANCHES '. "" BRANCH_ID ""BRANCH_ID"
  'IL_BRANCHES '. ' ' ' 'NAME',
  'IL_BRANCHES '. "' HEADLINE '"TITLE. "
  'IL_BRANCHES '. "" INSTANCE_ID ""INSTANCE_ID. "
  'IL_BRANCHES '. "' PARENT_ID '"PARENT_ID"
  'IL_BRANCHES '. "" PUB_STATUS ""PUB_STATUS"
  'IL_BRANCHES '. "" ALERT_STATUS ""ALERT_STATUS"
  'IL_BRANCHES '. "' ORDER_FIELD ' 'ORDER_FIELD ',.
  'IL_BRANCHES '. "" DESCRIPTION ""DESCRIPTION. "
  'IL_BRANCHES '. "" RELATED_LINKS ""RELATED_LINKS"
  'IL_BRANCHES '. "" EXTERNAL_LINK ""EXTERNAL_LINK. "
  'IL_BRANCHES '. "" SEND ""SENT. "
  'IL_BRANCHES '. ' ' CONTENT_1 ' 'CONTENT_1 '.
  OF ' IL_BRANCHES"@STAGING 'IL_BRANCHES ';

  I want to connect view refresh time in other tables when it refreshes

  You can check the last_refresh of the user_snapshot_refresh_times view and the view user_refresh next_date

  You can use it in the below format

  TO_CHAR (last_refresh, "DD-MM-YY HH24:MI:SS) last_refresh

  Anand

• Implementation of materialized view (10.2.0.5) - more than an hour to create

  A distributed query (remote several tables, several spaces), all refresh on demand. Note that I have no control over remote tables (impossible to create logs of MV, etc.) and I ask really just the difference in performance between the direct request and the MV.
  
  My MV script:
  
  CREATE MYSCHEMA MATERIALIZED VIEW. PRE-MEDICATION
  STORAGE)
  DEFAULT USER_TABLES
  DEFAULT FLASH_CACHE
  DEFAULT CELL_FLASH_CACHE
  )
  NOCACHE
  NOLOGGING
  NOCOMPRESS
  NOPARALLEL
  IMMEDIATE CONSTRUCTION
  FULL REFRESH ON DEMAND
  AS
  < my query >
  
  The query takes less than 2 seconds to turn, return of 600 lines. When you try to create the MV, I gave up after an hour. There is no index on the MV (of course, as I have not yet even created). The only hint in the query is to specify the table driven as the remote source.
  
  I did not request (I'll do it if necessary) because I'm not as interested tuning the query as I am to determine why the MV would be so ridiculously slow compared to the query itself.

  >
  The disappointing aspect of all this is that the query is essentially made of 3 tables remote (all from the same source, probably less than 1 k lines when joined to the top) and 1 local table (table of correspondence of line 37) while straight equi-joins.
  >
  Your solution is obvious.

  Create a local MV based ONLY on these 3 remote tables.

  Then create your required local MV based on this new local MV first and your local table.

  If these 3 remote lookup tables are even of the very useful by themselves and then create THREE local MVs, one for each of the remote tables.

  And build your local MV required on the three new local VM and your local table.

  You can add the MVs local to a group of refresh to refresh all at once with two approaches

  An approach fracture rule often works well especially with as small as your tables.

• help a single master more editable site materialized views

  Hello world
  
  I have a solution in which I have 5 sites.
  I decided to implement a single site of master with 4 updatable materialized view sites.
  The reason why I made this decision, it's I want that if my main site does not work, the materialized view sites don't update with other data.
  My question is in this situation if the main site became unavailable can be update view materialized sites update their own individually and after master site data become available, they send their data to that or not, they can query just to their own database until the main site are available?
  
  Thank you

  Hello

  Yes, what you think is correct. Mviews update can run locally even if the primary site is unavailable. She can push further data on the master site when the main site is available.

  The mviews update can be updated even if the primary site is unavailable. But the changes that happened on the site controller is not updated until it becomes available and an update is performed.

  Thank you
  Florent

• ORA-12028: type of materialized view is not supported by the main site

  Hi guys!

  We face a problem these days about the materialized view.

  We have upgraded database version 9.2.0.7 directly to 10.2.0.5 (RHEL4 x 86) on the same host. Database uses the driver dg4odbc to connect with remote SQL Server 2012 through data binding called MIKSERI. Our developer team would like to have replicated SQL server table data side Oracle using the materialized view.

  They created Materialized view, but it is not at all to refresh the data. I tried to study a little bit, and whenever I try to change the view anyway I hit error:

  ORA-12028: view type is not supported by the master site materialized @ 'MIKSERI '.

  ORA-06512: at line 22

  I looked at the solutions proposed and discovered that it is maybe the compatible database parameter, so I changed from previous 9.2.0.0.0 to 10.2.0.1.0 but still no luck. Just to emphasize this database is of course different clone of production to a different database, with db name retained and other parameters, but on another host computer and listening port. I even try to change global name, but still no luck.

  Main problem is that refresh the work does not at all. To be more precise, we have created MV on the side of the Oracle and FULL Refresh should be done every 3 minutes. MV uses HS db link to the sql server database. During the creation of MV, we can see currently given to sql server, but the problem is that we cannot do MV to refresh every 3 minutes. When I try to change MV and put the refresh interval I get above error.

  Any kind of help would be greatly appreciated,

  Thank you

  I found the reason why my MV update jobs failed, job_queue_processes parameter was equal to 0. I change this setting and now works fine.

  Thank you for your time!

• What is the desertion of orderly materialized view with MLOG$.

  I have 11.2.4.0 Oracle enterprise edition.

  I want to remove completely the MATERIALIZED view and MATERIALIZED view logs.

  
  

  I need to do this on a production of databases.

  
  

  It's the right order?

  Thank you.

  You can drop the materialized view log first, then the materialized views.

  Because when you drop a materialized view log is therefore more available to fast refresh, however, it is available to rewrite, so drop materialized view log first, then materialized views. Additional information provided below may help Doc Oracle.

  If you delete a simple materialized view that is the least recently refreshed materialized view of a main table, then the database automatically purges the materialized master table see only connect the required lines to refresh the materialized view has fallen.

  If you delete a materialized view that was created on a predefined table, then the database removes the materialized view, and table preconstruitse returns to his identity in a table.

  When you delete a master table, the database does not automatically drop the materialized views based on the table. However, the database returns an error when it tries to refresh materialized view based on a main table that has been abandoned.

  If you delete a materialized view, then all the compiled queries that have been rewritten to use the materialized view will be invalidated and recompiled automatically. If the materialized view was preconstruitse on a table, then the table is not deleted, but it can no longer be maintained by the materialized view refresh mechanism.

• Materialized view does not quickly refresh with sysdate in where clause

  Hi all

  I am trying to create a view, materialized with sysdate in where clause. This makes the complex query, and so I can't create a quick refreshment mview.

  I tried to create with rowid too, but it does not create a quick refreshment.

  I was wondering if someone can advise me, how can I accomplish this task, which would be really appreciated.

  The query is:

  create a materialized view PS_MEETING

  build the DEFERRED payment

  Refresh quickly with rowid

  as

  SELECT *.

  MEETING M

  WHERE state_desc = 'VIC '.

  OR Meet_date < TRUNC (SYSDATE);

  the behavior is documented: http://docs.oracle.com/cd/E11882_01/server.112/e25554/basicmv.htm#DWHSG8201

  General restrictions on update quickly

  The definition of the materialized view query is limited as follows:

  • The materialized view must not contain references to non-repetitive phrases such as SYSDATE and ROWNUM .

  So I guess that you would need a more static than sysdate condition - or another strategy update.

• Drop materialized view does not go down?

  SQL > drop materialized view MV_SONG;

  Materialized view is deleted.

  SQL > drop materialized view MV_SONG;

  Materialized view is deleted.

  SQL > drop materialized view MV_SONG;

  Materialized view is deleted.

  Very weird, I need to drop this MV in order to create a new.  I am not in a position from the drop.  Said Materialized view has declined, but he didn't fall.

  SQL > select * from v version $;

  BANNER

  --------------------------------------------------------------------------------

  Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production

  PL/SQL Release 11.2.0.3.0 - Production

  CORE Production 11.2.0.3.0

  AMT for Linux: Version 11.2.0.3.0 - Production

  NLSRTL Version 11.2.0.3.0 - Production

  SQL > select object_name, object_type, created, status from user_objects where object_name = 'MV_SONG ';

  OBJECT_NAM CREATED STATUS OBJECT_TYPE

  ---------- ------------------- --------- -------

  MV_SONG INVALID MATERIALIZED VIEW JULY 29, 11

  Here's more information:

  SQL > drop materialized view mv_song;

  Materialized view is deleted.

  SQL > select * from mv_song;

  Select * from mv_song

  *

  ERROR on line 1:

  ORA-00942: table or view does not exist

  SQL > create a materialized view force discount MV_SONG on request as select sysdate to double;

  create materialized view refresh MV_SONG force on demand as select sysdate double

  *

  ERROR on line 1:

  ORA-00955: name is already used by an existing object

  I asked the support of oracle, can't seem to find an article on the subject.

  Need advice.

  Thank you

  Steeve

  There is a bug, that dropping a materialized view leaves behind a summary that stop the materialized view to be properly cleaned and dropped in the data dictionary.

  Connect as sysdba and check DBA_SUMMARIES to an entry of your materialized view. If he doesn't make one: drop summary OWNER. MV_NAME;

  That should drop your MV successfully.

• Materialized view: when to use a full refresh

  Thank you in advance, I read in the book of the Oracle University - "a complete refresh of a materialized view is to truncate the existing data and reinsert all data based on detail tables, re-running the query definition to CREATE order. Quick updates apply only changes since the last update. My question is what we need to complete refresh because the data in the table created for the two methods are ultimately the same and fast refresh is more "quickly"?

  Well, I don't know about the Oracle University book, but Oracle manual list a long list of restrictions when fast updating is not possible. I hope that answers your question.

  SY.