Read-only materialized view

Similar Questions

• Simple example to configure read-only (materialized view) replication

  Hello world
  
  Can someone provide me with simple example to configure read-only (materialized view) replication?
  
  Also we have to manually re-create all indexes of the replicated database?
  
  Thank you
  Ken

  See

  http://download.Oracle.com/docs/CD/B19306_01/server.102/b14226/repmview.htm#i34980

  A MV is separated from the source table. You don't have to 'recreate' index. You can create separate (or the same) index on the MV - don't forget a MV can be a join of tables 2 or more! (Do not create a Unique Index on the MV)

  Hemant K Collette

• I get "failed to set the refresh attribute COMMIT for the materialized view" when I try to create a MV using a table and another MV

  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:

  • ROWIDmaterialized 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.

• SelectOneChoice and read-only Table

  Hi Experts,
  
  I am very new in ADF and try to put up a form that contains a component of SelectOneChoice based on a display object.
  I have a table with a variable binding and try to run the Object(underlying read-only table) view with the value that is selected in SelectOneChoice read-only. I added a managed method bean on valueChangeListener control SelectOneChoice and successfully getting the selected value.
  Now I'm getting a reference to the ViewObject and layout NamedParameter and then running it. Here is my code:
  
  {} public void ChangeValue has only (ValueChangeEvent valueChangeEvent)
  int s = ((Integer) valueChangeEvent.getNewValue ()) .intValue ();
  BindingContainer links is BindingContext.getCurrent () .getCurrentBindingsEntry ();.
  JUCtrlListBinding listBinding = (JUCtrlListBinding) bindings.get ("SanLovVO1");
  listBinding.setSelectedIndex (s);
  currVal int = Integer.parseInt (listBinding.getSelectedValue () m:System.NET.SocketAddress.ToString ());
  System.out.println ("selected value:" + currVal);
  
  DCBindingContainer bc = (DCBindingContainer) (BindingContext.getCurrent () .getCurrentBindingsEntry ());
  ApplicationModule am = bc.getDataControl () .getApplicationModule ();
  ViewObject vo = am.findViewObject ("SR1");
  vo.setNamedWhereClauseParam ("p_san_header_id", currVal);
  vo.executeQuery ();
  }
  
  I defined a variable binding (p_san_header_id) in the object View (SR-1), then using this variable of liaison with the query of the view object. I also give a default value to the variable binding.
  Now the problem is: when page gets loaded, I can only read table has records but when I select a value in SelectOneChoice, I am not able to see changed in the table read-only if get running code managedBean and autoSubmit is true for SelectOneChoice.
  
  Pls help me. This is my first attempt in ADF with Jdev 11.1.1.2
  
  Thank you
  Sumit

  I put the default value based on the value returned by the database for selectOneChoice on the loading of the page. I just determine the index value of the corresponding value coming from the db and put it in the page scope of stream.
  Then, I put it in the value of the selectOneChoice attribute.
  

• Question about the materialized view

  I read that Materialized Views should not be used to select the data. I thought that the whole purpose of materialized view to pre-computes joins and aggregation, so that we can recover more quickly. Please let me know your point of view. I'm working on a project of storage and using materialized in the queue views and data reports

  user637544 wrote:
  I read that Materialized Views should not be used to select the data.

  Where did you read that? As stone and others have tried to indicate, this is not the case. Note that the Data Warehousing Guide Peter links has several chapters on materialized views and their uses. Precomputing of aggregates is certainly one of these uses.

  Justin

• Extension Standard VO:-oracle.jbo.ReadOnlyViewObjectException: Houston-25016: object ApprovalHistoryVO View is read-only

  When I try to extend Standard VO I got error below, how can I overcome under question.

  oracle.jbo.ReadOnlyViewObjectException: Houston-25016: object ApprovalHistoryVO View is read-only

  Thank you

  Where are you this error?

  You did not extend the VO successfully and deployed on the server?

  Check the attributes in the extended VO Updatable property.

  See you soon

  AJ

• How to add the transient attribute for LOV (object of the view read-only)

  I have a view called CustomerView and attribute DepartmentId is present in it.

  Also exists DepartmentView and CustomerView.DepartmentId has an LOV from this point of view.

  I need to add a transient attribute to CustomerView which express the DepartmentName attribute in the LOV.

  Because of the view are read-only there is no entity object don't match them.

  How can I write the groovy for the transitional object expression.

  The name of the view accessor Lov's DepartmentView1

  Looking for your help. Thank you.

  Hi gcoban

  I do not understand your question correctly,

  you are not able to write to the expression property in viewObject?

  or you want to know how to write groovy for that?

  for writing groovy you need viewAccessor and you who have, you can try as Alejandro Tovar Lanz suggested

  or you can write code in RowImpl to fill in the name of the Ministry of the accessor

  See -https://blogs.oracle.com/adf/entry/combo_lov_how_to_display

  Thank you

• Read only view object replaces all of my attributes transitional when I change it

  We have a read only view object that is a large query that calls a stored procedure.   If I change the query and simply add a space character and save it, all the attributes change to be transitional and it completely breaks the view object.   The query uses an alias for each of the selected values, and I was able to replicate this with the simple query stand alone below.

  SELECT "Value1" as requestId,

  'value2' as accountId,

  "value3" as "Mr_Barcode1."

  "value4" as "dr_date."

  "Value5" as "dr_user_first_name".

  Of the DOUBLE

  Create a read-only display object and paste the query above in the sql pane and keep.   It creates correctly calculated for the 5 columns returned attributes.    Then enter and modify the query and change anything (add a space) and save.   The last 3 attributes get changed to transients and the expression gets deleted in each attribute

  It's about Jdeveloper 11.1.1.4.   I thought I would post here first of all before you try open a bug with Oracle.

  I discovered that the problem is related to what the quotes around the alias.  The person who created this originally borrowed display object from another application and the alias sql was points/periods in the names and the only way that works if you put quotes around it as below.   That works well in SQL Developer, but I get the obvious mentioned the problem when using this query in jdeveloper.   If I remove the points and the quotes in the alias I don't encounter this problem.

  SELECT "Value1" as request_Id,

  'value2' as argument account_Id,

  "value3" as "d.barcode_Id."

  "value4" as "d.date1."

  "Value5" as "d.first_Name".

  Of the DOUBLE

  Gets the XML in view objects defined like this (apostrophes around the double quotes).  It works the first time you save but when you edit the expression is removed, it gets changed to a transitional.

  AliasName = ' "dr_date."

  Expression = ""dr_date"

  I still think it's a bug, but now I can work around it.

• How to use the same point of view as read only in the ADF and editable

  Hello

  How to use the same point of view as read only in the ADF and editable? How can we succeed in TF?

  -James

  Hello

  Steven Davelaar wrote a presentation on this 'building highly reusable Taskflows.

  From slide 14, that's where your use case comes into play

  Frank

• Grant only read access to view Manager

  My client wants access to the Manager of the view through a browser " " https://view-Server/Admin/

  They have no access to the servers and I want to just give them read-only rights to see who is online at any time.

  I can't find anything outside by adding them to the administrators. They have rights in the region.

  Thank you

  Johan

  Currently, I do not think it is possible, once you have access you have full access.  Although 4.5, I heard that the administration is moving to permission based which should fix this.

• Refreshing a view read-only table based

  Hi all
  
  JDeveloper 11.1.1.5.0; Operating system: Windows7
  
  Location: On page 1, we have 3 tables: the first two are master detail (like dept and emp), the third is a stand-alone table that is based on a view read-only (like a list of all employees who do not have a Department).
  On the third Board, we have a column that contains a commandLink. This commandLink call action, which in turn calls an another taskflow as an inlineDocument (so as a popup).
  This another taskflow has as behavior: critical use existing transaction if controls data possible and share with the taks stream call. Within this taskflow we take a few parameters to create a new line to connect a Department employee to a service (in our case, we use a table between dept and emp). We also conduct a transaction commit and rollback, depending on the choice of the user.
  If the user commits the changes also perform us a query against the view of the employees without a Department (as we see in logging the query and the new number of rows) and then we return to the calling page.
  We see the second table is refreshed and showing the new data, but does not update the third table.
  We are sure that bc has the right number of files, but this is the iterator that always show the additional record.
  When you click a button on the page, causes the table to refresh and show the correct number of lines, also by closing and reopening the panelbox, around the table, give a correct result.
  
  What can we do to make the iterator refresh during the return of the taskflow (= popup)?
  
  What we tried:
  * Changing the properties of the iterator to always refresh or any other combination possible.
  * With the help of the removeFromCollection on the line method. But this only works if the view contains entities behind (which is a bit strange, given that the definition of the method in the documentation).
  Adding features behind the view
  * By using the property afterListener to call a method. The problem here is that we don't have a DCBindingContainer at our disposal. So not access iterators.
  * In the afterListener make a call of navigation (handleNavigation). Navigation did not.
  * With the help of the partialTriggers on the third table or panelBox, pointing to the commandLink. Once we do that, no discount no longer, not even the second table.
  * With the help of the partialTriggers on the third table or panelBox, pointing to the second table. Yet once, nothing happened.
  All this without any success.
  
  What else can we do to make the third refreshes table itself automatically after the return of the popup?
  
  Thank you for all your comments and remarks.
  
  Filip Huysmans.
  
  Published by: Filip Huysmans on 15 June 2012 10:14
  
  Published by: Filip Huysmans on 15 June 2012 10:15

  Try to create a method call before you go back to the workflow & refresh the collection here.
  Have a look here - http://jjzheng.blogspot.com/2010/11/manually-refresh-row-in-table-after.html specifically for the workflow & this http://jjzheng.blogspot.com/2010/08/manually-refresh-row-in-table-after.html

• Create table works, create materialized view only - long column names?

  Hello.
  
  I have no probs creating a table as well: -.
  CREATE TABLE blah
  (
  DEVICE_ID
  )
  in select
  "Device_ID" AS DEVICE_ID
  "of"sum" Device"@ed_link_3
  where "Device_ID" < 5;
  
  
  But when I try to create a materialized view:
  Blah1 CREATE MATERIALIZED VIEW
  (
  DEVICE_ID
  )
  < various materialized view parms >
  in select
  "Device_ID" AS DEVICE_ID
  "of"sum" Device"@ed_link_3
  where "Device_ID" < 5;
  
  It fails with errors: -.
  ORA-04052: error occurred when searching to the top of the remote object Aggregate.Device@ED_LINK_3
  ORA-01948: length of the name of the identifier (31) exceeds maximum (30)
  
  Is there a way to get around this?
  Is the problem with the columns of the remote table of device, which I do NOT need to import to have column names that are longer than 30 characters?
  
  For now, I want only the Device_ID column which is a simple 9 characters long.
  
  Oh, and the remote database is MySQL.
  I'm uncomfortable with the < parms of materialized view > as they work fine when I choose a different remote table with only short column names.
  
  Thank you.

  To my knowledge, you have the option
  (a) create view (with shortened column names or only with desired columns if they are already less than 30 char limit) side of mysql
  (b) use dbms_passthrough to force the analysis to be done on mysql (as in the example provided by SY here use dbms_passthrough to create a view )
  However, I prefer to stick to one), because with dbms_passtrhough, you retrieve row by row.

  Best regards

  Maxim

• How can I view the repository of 12 c OBIEE 'active' in read-only mode

  After using the data-model file - cmd.cmd batch download a SPR, SPR becomes a sequentially numbered file in this directory:

  'C:\Oracle\Middleware\user_projects\domains\bi\bidata\service_instances\ssi\metadata\datamodel\customizations '.

  And I presume that the new file numbered sequentially (for example, liverpd.rpd_2) is now the repository that is actively used as referential 'live' by OBIEE.

  Is there a way to open this deposit 'live' in the Administration tool?  If I try to do, I am notified that I can only open it read-only.  Well Yes, that's fine, that makes perfect sense.  (It also means I'm trying to open the 'live'.  So far so good.)  I am prompted for the password for the repository.  Type the correct password repository fails.  A simple dialog: the connection has failed.

  Certainly, I type the correct password repository.  Is it maybe a bug?

  Does not work like that more. This password is there for a reason (RPDs live in 12 c are MUCH more complex than before) and nobody knows - because you don't need.

  You can Open the RPD online, or you can use the data-model-cmd downloadrpd to get a copy of the current version of live.

• How to show total for an Object(read only, not based on entity) view based query

  Hi Experts,

  JDEV version 12.1.3.0

  I want to show the total of column salary for reading only VO (not based on the entity, but the query based).

  The readonlyVO has some display criteria to display the data. So the total should appear only for values, I see in the user interface.

  Thank you

  Roy

  Looks like JDEV problem which was not allowing me to add the transition attribute. After the reboot of jdev im able to add the transition attribute.

• Re: view opaque and the materialized view

  Hi Experts,

  I want some clarification of opaque and view view in the physical layer OBIEE materialized

  -> what is the main difference between the opaque view and materialized in the RPD perspective view, we have to do this at the level of the RPD or DB.

  -> I want the list of opaque opinion and materialized in the RPD view how I should do.

  -> How opaque views will degrade the performance and how a materialized view will improve performance at the level of the report.

  -> In scenarios that we use view opaque and the view materialized (if possible with a scenario for the best permanent basis).

  Thanks in advance.

  I want some clarification of opaque and view view in the physical layer OBIEE materialized

  -> What is the main difference between opaque view and create the materialized view in the RPD point of view, we have to do this at the level of the RPD or DB.

  Opaque views is a SQL statement that is defined in the physical layer, OBIEE will use all in the construction of a SQL query. In a way it's not different from a database view, except it is set in OBIEE only. Alternatively, you can deploy an Opaque view, which pushes its definition in the database. Read more about it here: work with physical tables, Cubes and joins - 11 g Release 1 (11.1.1)

  A materialized view (MV) is a database concept where the results of a SQL statement are physicalised like a table, and therefore as OBIEE is a MV is just another physical array

  -> If I want a list of the opaque views and materialized in the RPD view how I should do.

  To find opaque views, use the function «Repository of applications» administration tool Search physical Tables and set up a filter on the Type = Select

  Screenshot: https://www.evernote.com/shard/s16/sh/5c843e47-bff1-4d4b-b847-be98f3a2ec09/cf060a6cd9805f687fa0b5b46f3f0020

  To find materialized views, you will need to query the catalog in your database (for example select object_name, object_type from user_objects where type_objet = "MATERIALIZED VIEW" ;) and compare it to the list of tables in your SPR)

  -> How opaque views will degrade the performance and how a materialized view will improve performance at the level of the report.

  A materialized view is materialized, in other words, the results are already stored in the database. This means usually there will be more efficient because all the joins and aggregations, etc. will be settled in advance.