Index organized Materialized View in SQL Developer Datamodeler

Hello SQL Developer Datamodeler Team,
I'm using version 4.0.2.840 and looking for a how-to to change a MV to an IOMV.
So far I do the following:
Create Table in Relational Model
Create MV in Oracle 11g Physical Model
Double Click Table in Oracle 11g Physical Model
Set "Implement as MV" to my MV
OK
Now I can't find an option for index organized in Physical Model Materialized View properties.
The setting "Organization: Head/Index" for Physical Model MV-Basetable properties does not change the generated DDL.
Also, setting this to "Index" does not enable the window's "IOT Properties"-tab (like it does for normal tables).
Is it possible to create an Index organized Materialized View in current SQL Developer Datamodeler?
Thank you & Best regards,
Blama

Hi Blama,
DDL for Index-organized Materialized Views is generated in the Early Adopter release 4.1.0.866, which is now available for download.
The Organization on the Table that is implemented as the Materialized View should be set to INDEX, and the Table's IOT properties will be used during DDL generation.
David

Similar Messages

Problem refreshing Materialized View in SQL Developer

I have a database schema with a Materialized View (MV) that updates a products table shown on a website. This schema was recently imported to an 11g database from 8i, but since this import I have been unable to refresh my schema’s Materialized View.
The MV_PRODUCT_MASTER Materialized View attaches price data to product data that is stored in a normal WEB_PRODUCT table, and create an MV table as a result. The output MV table is what the website pulls data from to display to the site users. Since it is an MV table, this table cannot be edited directly. In order to change, say, a product description, I need to alter the description field in WEB_PRODUCT and manually refresh the MV_PRODUCT_MASTER table. Only through the refresh will the upstream edits appear in the MV_PRODUCT_MASTER table and be visible on the website.
In my old 7.6.0.11 copy of TOAD, I could manually refresh these MVs easily, by opening the “Snapshots” tab, right clicking on the MV I wanted to refresh and selecting the “Refresh” option. Since the schema was imported to 11g, I have been using the Oracle SQLDeveloper tool to manage the schema. SQLDeveloper doesn’t have a clear method for manually refreshing an MV, or else the method I am using isn’t working.
If I right click on the MV_PRODUCT_MASTER Materialized View object, and choose “Other Actions”, I see the following choices:
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Compile Materialized View
Force Materialized View Refresh
Rebuild Materialized View
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alter materialized view "WEBADMIN"."MV_PRODUCT_MASTER" consider fresh
When I apply this, I get the message: “Materialized view “MV_PRODUCT_MASTER” has been set torefreshed”. However, no changes appear in the MV output table. i.e. if I make a specific change to a row in the WEB_PRODUCT table, the change is not being carried into the MV_PRODUCT_MASTER table, so that indicated that the refresh is not actually happening. The MV table appears to believe it is being refreshed:
REWRITE_CAPABILITY     GENERAL
REFRESH_MODE     DEMAND
REFRESH_METHOD     COMPLETE
BUILD_MODE     IMMEDIATE
FAST_REFRESHABLE     NO
LAST_REFRESH_TYPE     COMPLETE
LAST_REFRESH_DATE     06-APR-10
STALENESS     UNKNOWN
…but it isn’t showing any changes.
What am I doing wrong? Is there a plain SQL statement I can run in order to run these refreshes, instead of using the SQLDeveloper GUI? Thanks for any advice on this.

Hi Blama,
DDL for Index-organized Materialized Views is generated in the Early Adopter release 4.1.0.866, which is now available for download.
The Organization on the Table that is implemented as the Materialized View should be set to INDEX, and the Table's IOT properties will be used during DDL generation.
David

How to view SQL for a materialized view in SQL Developer (Oracle 11g R2)

Good Morning,
I am new to SQL Developer 3.1.07 and just installed it on a Windows 7 PC yesterday.
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Bob Gardner
[email protected]

1007420 wrote:
There's a materialized view for which I need to view (and eventually update) the SQL. The mat'lized view is in another schema, but my Oracle user does have access to the schema and to this particular mat'lized view. My user also has SELECT, INSERT, UPDATE, DELETE, DEBUG, and ALTER permissions. When I select (click on) the matl'ized view in the object tree on the left, a multi-tab window opens with information in the Columns, Indexes, Grants, Dependencies and Details tabs, but the SQL pane is blank. I don't know if there's some other GRANT that I need in Oracle, or if there's something else I need to do in SQL Developer to see the matl'ized view SQL.SQL*Developer can be tricky regarding what it shows for other schemas. I'm not sure what privileges you might need besides the one you listed except RESOURCE on the MV, or maybe CREATE ANY MATERIALIZED VIEW.
Can you use DBMS_METADATA.GET_DDL to get the data you want (may/may not work due to privileges)?

Are Cube organized materialized view with Year to Date calculated measure eligible for Query Rewrite

Hi,
Will appreciate if someone can help me with a question regarding Cube organized MV (OLAP).
Does cube organized materialized view with calculated measures based on time series Year to date, inception to date eg.
SUM(FCT_POSITION.BASE_REALIZED_PNL) OVER (HIERARCHY DIM_CALENDAR.CALENDAR BETWEEN UNBOUNDED PRECEDING AND CURRENT MEMBER WITHIN ANCESTOR AT DIMENSION LEVEL DIM_CALENDAR."YEAR")
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Thanks in advance

I dont think this is possible.
(My own reasoning)
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I tried to search for query rewrite solutions for Inventory stock based calculations (aggregation along time=last value along time) and see if olap cube with cube aggregation option set to "Last non-na hierarchical value" works as an alternative to relational calculation. My experience has been that its not possible. You can do it relationally or you can do it via olap but your application needs to be aware of each and make the appropriate backend sql/call. In such cases, you cannot make olap (aw/cubes/dimensions) appear magically behind the scenes to fulfill the query execution while appearing to work relationally.
HTH
Shankar

Synatax and Example of Materialized Views in SQL server?

Syntax and Example of Materialized Views in SQL server?

Also see
http://sqlperformance.com/2014/01/sql-plan/indexed-views-and-statistics
http://www.brentozar.com/archive/2013/11/what-you-can-and-cant-do-with-indexed-views/
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs

How to get the script of a table or view in SQL Developer?

Dear friends/expert,
Could you tell me how to get the script for a view or a table easily in SQL Developer like pressing F4 in TOAD?
I found that I can press SHIFT+F4 for a view in SQL Developer and get the script of the view in Details Tab. But how to move the script to SQL worksheet to edit? It is very easy to do in TOAD.
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Best regards,
Ning

1. Although the team might put a lot of effort in keeping track on the forum, a lot of posts still go by without answer.
2. If you have an enhancement request, log it at the announced SQL Developer Exchange, so others can vote to add weight on the issue. Be clear and detailed in the explanation.
3. Given the structure of the application, I guess it won't be easy (maybe impossible) to add the functionality you are asking. Do you have a suggestion on how to access the info?
4. If your request gets accepted, still another year or two may go by until the functionality gets added. For sure you'll be better off writing a user defined extension or report (querying DBMS_METADATA.GET_DDL).
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Edited by: -K- on 12/01/2009 09:37

No data in view in SQL Developer

When trying to run the following code in SQL Developer the return values from the statement are all NULL.
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When the first instance of SQL Developer was the checked under these OS settings the NLS Parameters were still English and United Kingdom.
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Message was edited by: Jampat to include SQL Developer version number.

How to view complete date stamp in query result view in sql developer?

Hi,
In the query result, the date present in db is shown as DD-MM-YYYY format but I want to view the complete date stamp. When I view the same data in aqua data studio, I see the complete time stamp. Please let me know if I need to do some settings in Oracle SQL Developer so that complete date is shown?
How to view complete date stamp in query result view in sql developer?
Thanks in advance,
Vineet

864793 wrote:
Hi,
In the query result, the date present in db is shown as DD-MM-YYYY format but I want to view the complete date stamp. When I view the same data in aqua data studio, I see the complete time stamp. Please let me know if I need to do some settings in Oracle SQL Developer so that complete date is shown?
How to view complete date stamp in query result view in sql developer?
Thanks in advance,
VineetAlternatively you can execute below
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Achyut K

Where to find the blob viewer in sql developer

Hi,
i tried to find the blob viewer in sql developer to see blob column data , but failed. The manual introduce blob vievers but not mention where it is in sql developer
can any gurus guide me to find blob viewers
Thanks

user10833860 wrote:
double click the result cell of blob. the blob viewer will pop up
This quote is from the 2nd link
http://sqldeveloper.solyp.com/download/SQLDeveloperUserManual_en.pdfThis is not the same SQL Developer as the Oracle supplied SQL Developer.
It shows the raw binary data unless it is a JPEG, GIF or PNG where you can see a picture.
>
http://download.oracle.com/docs/cd/E18464_01/doc.30/e17472/dialogs.htm
This is better, this is the documentation for Oracle SQL Developer
>
Use the external editor associated with the MIME type and file extension (see the preferences for External Editor)
>
http://download.oracle.com/docs/cd/E18464_01/doc.30/e17472/intro.htm#CHDDJFGE
>
The External Editor pane determines which external editor is called by SQL Developer when you try to edit binary large object (BLOB) data, such as image files, video files, and other files created by certain applications. For each combination of MIME type and file extension, you can specify the executable application to be used to open and edit associated files.
>
Did you set up an application that can open the binary files of the type you want to view?

Equivalent of Materialized Views in SQL Server

Hi
we are migrating Oracle Database to SQL Server 2012 and is looking for solution, equivalent to Materialized Views in Oracle.
we had tried to implement indexed View, but that was not possible, because the MVs have outer joins, subqueries, aggregate functions and also there is no column in it which can act as a Primary Key.
Please Help to get a solution for this issue.
Regards
Joyasree Mondal

>use tempdb
>drop table t
>go
>create table t(id int, constraint pk_t primary key (id))
>
>go
>insert into t(id)
>select top 1000 cast( cast( newid() as binary(4) ) as int)
>from sys.objects o, sys.columns c
>go 100
>
>
>select id
>from t with (index=pk_t, tablockx)
>
>
>select id
>from t with (index=pk_t, nolock)
Still the same order.
>> No, its always in the key order like I've shown here.
> You are extrapolating from a single example.
Actually, this information doesn't even come from my exampleS (there were quite a few so far). Its written in the article you posted here. My examples are meant to confirm that and explain why the ORDER BY clause is redundant in some cases.
> I have. ORDER BY in a view used to always return ordered results. Then it didn't.
Examples? References?
>GROUP BY without an ORDER BY used to always return ordered results. Then it didn't. Many queries have >change the result ordering when you get a parallel plan.
Now you finally admit ordered results would always be returned, even without an order by clause. We are in the right track it appears. The reason for this change of behavior is a variation in the logical operator used by the query optimizer, and not the
way the engine reads pages from disk.
In the beginning of times there was stream aggregate, an operator that would require its input to be sorted. And this is how a GROUP BY clause would ensure results were always ordered.
But then his ugly cousin came and messed things up. He doesnt need an ordered input so yeah, order would be random. AGAIN, there are still ways of enforcing order here, through query hints, without requiring an order by clause, so this changes nothing.
You have confirmed that for a given operator, results will always be ordered. Your own argument has, once again, proven my point.
> Right. But there are different _kinds_ of scans. An ordered scan, where SQL Server reads rows based on the logical order of the index is just one kind.
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the example with NOLOCK/TABLOCK (known to cause allocation-order scans in larger tables) you posted above.
> Other kinds include the parallel scan, the reverse scan,
References?
> the merry-go-round scan,
Only applies to table scans, not indexes.
http://technet.microsoft.com/en-us/library/ms191475%28v=SQL.105%29.aspx
> And the allocation-order (or unordered) scan.
Only if you specify TABLOCK or NOLOCK query hints, which I haven't done. This is something that goes without saying, it's irrelevant to an indexed view scenario such as this one.
Some people have also said it will perform an allocation-order scan if the index is too fragmented in SQL Server 2005, but as of 2012 it (probably) won't, as I have shown here. There is also no document anywhere in the internet (you are free to search for
it), that would point us otherwise. If you have access to additional information, I would be more than happy if you could share it with us.
Reference: http://sqlmag.com/database-development/quaere-verum-clustered-index-scans-part-iii
> And don't take my word for it. Take Conor Cunningham's:
>If you need order in your query results, put in an ORDER BY. It's that simple. Anything else is like >riding in a car without a seatbelt.
>No Seatbelt - Expecting Order without ORDER BY
Again, with all due respect, did you read your own article? Did you read what I said earlier about having multiple I/O threads as a whole other situation? If you add new variables, OF COURSE the results will be different. Parallelism was disabled in the
server I performed these tests on, but still you can control this by query hints, and you can enforce execution plans by using plan gudes.
Its like I always say - it's always about the 0.001% of situations, the exceptions, rather than the general rule.
Tell Mr Connor to add MAXDOP 1 to his querys OPTION clause and see if results are still unordered lol
References:
http://msdn.microsoft.com/en-us/library/ms190417.aspx
http://msdn.microsoft.com/en-us/library/ms181714.aspx
http://technet.microsoft.com/en-us/library/ms188611%28v=sql.105%29.aspx
http://blogs.msdn.com/b/conor_cunningham_msft/archive/2008/08/27/no-seatbelt-expecting-order-without-order-by.aspx
Imagining uncontrollable factors that would get an ordered input to be retrieved in an unordered manner is one of SQL Server's myths. There are a whole other people around who think the same way because of some experiences they had when they didn't know
how to control the execution plan, and adding an order by clause is a very popular and easy shortcut to a complex problem. "In the worst cases it will just be redundant", they say. What they like to forget is that sorting has an often high cost,
and it can be avoided by taking advantage of indexes.

Index On Materialized View

I have created a materialized view that involves joining 4 tables for diferent where conditions. How can I create index on this materialized view.
Thanks

Yes, but it is done automatically:
SQL> create materialized view emp_dept_mv
2 as
3 select e.empno
4       , e.ename
5       , e.sal
6       , d.deptno
7       , d.dname
8    from emp e
9       , dept d
10   where e.deptno (+) = d.deptno
11 /
Gematerialiseerde view is aangemaakt.
SQL> create index i1 on emp_dept_mv (deptno)
2 /
Index is aangemaakt.
SQL> exec dbms_stats.gather_table_stats(user,'emp_dept_mv',cascade=>true)
PL/SQL-procedure is geslaagd.
SQL> set autotrace on explain
SQL> select * from emp_dept_mv where deptno = 40
2 /
     EMPNO ENAME             SAL     DEPTNO DNAME
                                         40 OPERATIONS
1 rij is geselecteerd.
Uitvoeringspan
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   2    1     INDEX (RANGE SCAN) OF 'I1' (NON-UNIQUE) (Cost=2 Card=4)
SQL> set autotrace off
SQL> insert into dept (deptno, dname) values (50, 'EXTRA DEPT')
2 /
1 rij is aangemaakt.
SQL> exec dbms_mview.refresh('emp_dept_mv')
PL/SQL-procedure is geslaagd.
SQL> set autotrace on explain
SQL> select * from emp_dept_mv where deptno = 50
2 /
     EMPNO ENAME             SAL     DEPTNO DNAME
                                         50 EXTRA DEPT
1 rij is geselecteerd.
Uitvoeringspan
   0      SELECT STATEMENT Optimizer=CHOOSE (Cost=2 Card=4 Bytes=96)
   1    0   TABLE ACCESS (BY INDEX ROWID) OF 'EMP_DEPT_MV' (Cost=2 Card=4 Bytes=96)
   2    1     INDEX (RANGE SCAN) OF 'I1' (NON-UNIQUE) (Cost=2 Card=4)Regards,
Rob.

Can I create index on Materialized view log

Hello
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Actually you can do it since materialized view log is in fact a table.
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Table created.
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Materialized view log created.
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SEGMENT_TYPE
MLOG$_T
TABLE
T
TABLE
SYS_C004857
INDEX
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Oracle Text Index on Materialized View

Hello,
I have designed a search engine for an internet application.
We have different tables for our main business objects, the search is based on the content of all these dependent entities (Product, Company etc...)
So I have created a materialized view to embody this aggregation.
Then I have created a Multi column datastore index on top of the snapshot.
The search engine has to be refreshed automatically 3 times a day, and manually anytime.
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We have let the users access the engine since Thursday (the index had been created on the production environment a fews weeks ago) and since yesterday (or maybe before) we have been experiencing data incoherency on the index...
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DRG-50857: oracle error in drekrtd (lob erase)
ORA-00060: deadlock detected while waiting for resource
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ORA-06512: at "SYS.DBMS_SNAPSHOT", line 851
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 832
ORA-06512: at line 2
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Once I dropped the Oracle Text Index, I was able to refresh the MV again..
so it looks like the index was in some incoherent state and was holding a lock on the materialized view...
Maybe my Index refresh call is wrong, and a stronger load on the functionality leads quickly to this pb, I dont know..
I had always been a bit doubtful towards my index rebuild call, so Im thinking about using a more complete call :
alter index usr_batiprod.fullTextMulticolIdx rebuild parameters ('sync')
is it enough, or do I have to switch to a 'Oracle Text' specific call ?
Is there another possible reason for the MV lock ?
Thank you for your support
Best Regards
Olivier Cuzacq

MVs are constructed in different ways and have lots of different uses.
Why not just use MV as temp table for OT (Oracle Text) index?
Refresh MV OT_TEMP.
Delete all not matching rows from OT.
Insert all missing missing rows from OT_TEMP to OT.
sync OT index (online).
Query table OT.

What is the red block on left of Materialized View in SQL Object Browser

Hi
In APEX 4.0 i have a few Materialized Views - all work fine, but when I view them in the SQL Workshop Object Browser, a little red block appears on the left hand side of the MV name.
I'm curious to know what this might mean.
Thanks
Mike

Hi Jari
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The same shows when I run in SQL:-
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The status is valid.
It is not a problem - just puzzling?!
Thanks anyway.
Mike

Customization of Connection Drop Down/View in SQL Developer

I know this may not be that import feature that i think SQL Developer should have but will be very helpful.
In my scenario there are many databases and schemas exists in Development/Staging/Production environments, there is a possibility when selecting a connection from drop down some other connection is selected, its human error. What if there is Group by option in the drop down so that we can customize or group lower environment connections in one place and others in different group, even color coding of critical connections settings could be much helpful.
So in short i think it would be great if the following feature is included in next release of SQL Developer
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JeffSmithSQLDevPM wrote:
I think the poster means this actually
You'll need to be more specific. The developer comment for the feature request you linked says this:
Folders in the navigator are currently not persisted. Implementing this is not trivial.
I have created 'prod' and 'test' folders and put connections in each of them in 3.0.02 Build MAIN-02.37 and the folders and connections persist just fine.
So the connections themselves can certainly be 'grouped' which is what OP specifically asked about.
What if there is Group by option in the drop down so that we can customize or group lower environment connections in one place and others in different group, even color coding of critical connections settings could be much helpful.
Everything else in the tree (e.g. schemas) is specific to a connection which can be specific to a user created folder such as 'prod' or 'test'.
So if OP means something else they will need to clarify what they really mean and provide an example.

Index organized Materialized View in SQL Developer Datamodeler

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