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

Similar Questions

• Read-only materialized view

  When you try to refresh the materialized view, we frequently get the below error. In order to overcome this error to drop and re-create this point of view. I also came to know that there are materialized views unalterable that can be set at the time of the creation of materialized view syntax inorder to avoid the error below.
  Please give me example how to create read-only materialized view.
  
  SQL > BEGIN dbms_mview.refresh ('CPNF_SRCLNK_TBL'); END;
  
  *
  ERROR on line 1:
  ORA-00942: table or view does not exist
  ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2254
  ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2460
  ORA-06512: at "SYS." DBMS_SNAPSHOT", line 2429
  ORA-06512: at line 1
  
  Thank you

  Hello

  See this note.

  * Materialized view refresh fails with ORA-942: table or view is not [236652.1 ID] *.

• materialized view replication

  Hello
  
  We currently have this configuration in our environment:
  Db1 < Master site >
  DB2 < Mview site - Readonly >
  
  We use the replication at the table level. Basically, a NEWSPAPER MVIEW will be created each table in db1 and fast refresh of the table is programmed in the mview site 21:00 daily.
  
  Now, there is an additional requirement to set up a new site < DB3 > mview. DB1 or DB2 data must be replicated to DB3.
  
  Judge of our current environment, can we configure the mview new site based on the < Exisiting mview site > DB2? Or can only replicate in DB1 < master > DB3?
  
  Please advise.
  
  Thank you

  You can replicate the materialized view site (DB2) to another site (DB3). See the link below (for 9i, should be same on later versions) for more details.

  http://docs.Oracle.com/CD/B10501_01/server.920/a96567/repmview.htm

  Salman

• Read only data with replication SAN HP store? (CA)

  Hello

  Not sure it should be in the ESX or VC forum...    We use EVA and replication on XP SAN with SAN CA (Continuous Access). We have virtual machines on a LUN (read, write) replicated to a destination LUN Dr. When you use HP CA it marks the destination LUN read-only source...

  We want to import the LUN target in our cluster of DR esx, but when we add the disk it formats... We have tried to deceive esx by adding the data reading writing that works then set up this store again which marks while reading then however only store data disappears from the host to storage page...

  Anyone know if this will work or how to make it work?  Maybe a setting advanced on the part of the drive to ESX import read only LUNS which we will turn to read write if we talk about DR

  Any ideas would be thank you very much

  Packetboy.

  On the second site ESXs, enter into the advanced settings and go to LVM > DissalowSnapshotLun and set it to 0. Perform a new analysis and data warehouses SHOULD appear available. You can go back to la to write.

  Only, I did not understand why the added ESX your LUN as data stores format again. This behavior should not happen. Maybe something is not replicated.

  Do not forget that, by adding a virtual computer, you will need to keep/change the uuid as the data store has changed unit logic (indeed) number.

  Marcelo Soares

  VMWare Certified Professional 310

  Technical Support Engineer

  Chief Executive Officer of the Linux server

• 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.

• What is 'Table of container' in materialized views

  Hello

  What is meant by ' Container Table ' in materialized views?

  "Materialized view" (MV) is, in fact, a table, rather than a view.

  The term MV is used of the 9i database. In the 7 and 8 databases is the term 'snapshot' (to make things more complicated, the MV concept appeared in the 8i database, but in the context of the data warehouse).

  When you create a MV, for example. using the:

  Create materialized view emp_mv

  full refresh on demand

  as select empno, ename from EMP

  /

  you have, in fact, have created two objects in the data dictionary:

  Select object_name, object_type

  from user_objects

  where object_name = 'EMP_MV. '

  order by 1, 2;

  OBJECT_NAME OBJECT_TYPE

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

  MATERIALIZED VIEW EMP_MV

  EMP_MV TABLE

  You can remove MV and a table of container:

  drop materialized view emp_mv;

  or you can delete only MV, preserving a table containing:

  Let fall the materialized view emp_mv maintain the table;

  Kind regards

  Zlatko

• Change the definition of the materialized view while maintaining access for users uninteruupted

  Hello

  We have a system report and the need to change the report definition mv access - like to do it without interruption.

  Is this possible?

  the sql behind mv was change picks up so column of another table.

  Have you heard but not used for dbms_redefinition tables

  Thank you

  It is built in the Oracle solution for this one, where you can edit the definition WITHOUT interruption. You can drop the materialized view existing with the clause "save table" and rebuilt the view materialized on 'predefined table'. I googled this example for you

  create materialized view mv1 as select dept , count(*) as cnt from scott.emp;

  We want to change the statement so that only dept more 5 will be calculated

  drop materialized view mv1 preserve table;
  

  Notice that PRESERVE TABLE clause - mv1 table is not droped - single layer mview.

  desc mv1
  

  now, we create the mview with a different query on top of the existing table

  create materialized view mv1 on prebuilt table as  select dept , count(*) as cnt from scott.emp where dept > 5;
  

  Notice that on prebuilt table the mview uses the existing object clause.

  exec dbms_mview.refresh_mview('mv1');
  

  http://StackOverflow.com/questions/18085894/redefine-MATERIALIZED-view-with-no-downtime

  http://Arup.blogspot.com/2009/01/ultra-fast-MV-alteration-using-prebuilt.html

• Read only zoning

  Hello

  On Nexus, possible possible is it to configure read-only zoning? If so, how?

  MDS, we have the attribute "read only".

  A9124-2 # config t

  Enter configuration commands, one per line.  End with CNTL/Z.

  A9124-2 (config) # area name Z_sresx1_HBA1_CX340_SPB_P0 vsan 2

  A9124-2(config-zone) # read-only attribute

  License ENTERPRISE_PKG not installed. Play only zoning will be stopped after the grace period of approximately 120 day (s).

  Thanks for your comments

  Nicolas.

  You can use fabric Manager to create read-only zones.

  http://www.Cisco.com/en/us/docs/switches/Datacenter/nexus5000/SW/configuration/guide/FM/zone.PDF

  Kind regards

  Robert

• Help understand materialized views

  I inherited a few db instances that were extensively using materialized views. To be honest, I've never had to configure or use materialized views, and I wonder if my logic on them is correct.
  
  Host instance
  The Materialized View logs live here
  
  Instance of the target
  Materialized views are living here.
  When you want your updated data you run here but all of the activity is on the Pb of the host.
  
  My real question here is I is more necessary than materialized views and I just want to take them off. I recloné the target instance, so all materialized views have been blown away. Should I just delete the materialized view logs to completely remove it from my environment? Or is their something more needs to be done.
  
  Thank you

  >
  My real question here is I is more necessary than materialized views and I just want to take them off. I recloné the target instance, so all materialized views have been blown away. Should I just delete the materialized view logs to completely remove it from my environment? Or is their something more needs to be done.
  >
  That's all you need to do. If you used the REFRESH GROUPS, you can remove those and if you have any DBMS_JOBs that were used to update the MVs you won't need those most.

  Naturally all code referenced directly newspapers MV or the MVs themselves will have to be amended to remove the references.

• How to limit the request for read-only access

  We are the migration of 7.1 to version 11.1. As part of the Cup on the activities, I need to keep the old server on read-only for a few days and then completely block access. Can you please let me know if there is a simple way to limit read only access on Server 7.1, instead of changing the security settings of all groups on the server?
  
  Grateful for your help!

  What would you say to put the databases in read-only mode until you delete access.

  Esscmd - BEGINARCHIVE
  MAXL - [alter database | http://download.oracle.com/docs/cd/E10530_01/doc/epm.931/html_esb_techref/maxl/ddl/statements/altdb.htm] archive to start at app.db...

  There are equivalent commands out of read-only mode, the links will take you to the information you need.

  See you soon

  John
  http://John-Goodwin.blogspot.com/

• 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

• 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.

• 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.