Database link in data modeler

How can i create a database link in data modeler and where?
I didn't find where can create this object.
Please help me!

If you mean, where to set up a database connection in order to import data dictionary definitions, then...
File > Import > Data Dictionary will display the Data Dictionary Import Wizard
Press Add to show the New/Select Database Connection dialog
Press Test, Save, Connect etc to check your connection details.

Similar Messages

OWB 10g -- Can't Create Database Links for Data Source and Target

We installed OWB 10g server components on a Unix box running Oracle 10g (R2) database. The Designer Repository is in one instance. The Runtime Repository and the Target are in another instance. The OWB client component was installed on Windows XP. We create a data source module and a target module in OWB. The data source is on another Unix box running Oracle 9i (R2) database. We try to create database links for data source module and target module, respective. But when we created and tested the DB links, the DB links were failed.
For the database link of data source, we got the following error message:
Testing...
Failed.
SQL Exception
Repository Error:SQL Exception..
Class Name: CacheMediator.
Method Name: getDDEntryFromDB.
Repository Error Message: ORA-12170: TNS:Connect timeout occurred
For the database link of target , we got the following error message:
Testing...
Failed.
API2215: Cannot create database link. Please contact Oracle Support with the stack trace and the details on how to reproduce it.
Repository Error:SQL Exception..
Class Name: oracle.wh.ui.integrator.common.RepositoryUtils.
Method Name: createDBLink(String, String, String, String).
Method Name: -1.
Repository Error Message: java.sql.SQLException: ORA-00933: SQL command not properly ended.
However, we could connect to the two databases (data source and target) using the OWBs utility SQL Plus.
Please help us to solve this problem. Thank you.

As I said prior the database link creation should work from within the OWB client (also in 10).
Regarding your issue when deploying, have you registered your target locations in the deployment manager and did you first deployed your target location's connector which points out to your source?
I myself had some problems with database link creations in the past and I can't remember exactly what they were but it had something to do with
- the use of abnormal characters in the database link name
- long domain name used in as names.default_domain in my sqlnet.ora file
What you can do is check the actual script created when deploying the database link so see if there's something strange and check if executing the created script manually works or not.

Reuse Dimdate across different database for different data models

Hi,
I am designing a new data model for a data mart. I need to add dimdate dimension in this data model. I noticed that dimdate already exists in another database and being used by another
data model. Is it possible to re-use the existing dimdate table for my new data model? If so, what about the foreign key constraints? Normally we link the date columns from fact table to the dimdate keys. How would we achieve that in case we are using the
same table across different databases?
Any opinion on this will be highly appreciated.
Thanks in Advance.
Cheers!!

You can create a copy of dimdate table to your new data warehouse.
If both data marts were in a single data warehouse, then you don't required to copy. but as these are in two different databases then you just copy that.
regarding FK relationship. you can connect any fact table to you date dimension. even if you want to use more than one instance of your date dimension, it would be simply adding multiple FK columns in your fact table (role playing dimension).
For date dimension be sure that your date dimension covers most of the attributes required. here is an example of date dimension:
http://www.rad.pasfu.com/index.php?/archives/156-Script-to-Generate-and-Populate-Date-Dimension-Version-2-Adding-Multiple-Financial-Years.html
Regards,
Reza
SQL Server MVP
Blog:
http://rad.pasfu.com Twitter:
LinkedIn:
SQL Server Integration Services 2012 Tutorial Videos:
http://www.radacad.com/CoursePlan.aspx?course=1

How can you SELECT via Database Link CLOB data using Application Express?

Customer Issue:
Developer using Oracle's Application Express 3.1. The Developer is trying to SELECT a CLOB datatype column from a remote (10.2.0.3) database, via a database link on her 10.2.0.4 based client Application. The Developer wants to be able to select CLOB data from the remote database which has limitation that she can't make any changes to the remote database.
Developer's Comments:
I do a select and get the error. Getting error ORA-22992: cannot use LOB locators selected from remote tables. So she feels she can't use dbms_lob.substr in this configuration I can do a "select into" but that is for one value. I am trying to run a select statement for a report that brings back more than one row. I do not have permission to change anything on the remote database. I want to access the remote database and multiple tables.
This is not something I work with, would greatly appreciate help or ideas. Is this a limitation of the 3.1; or does she just not have this set up correctly; or should she be using a Collection (if yes, please share example)
Thanks very much,
Pam
Edited by: pmoutrie on Jun 4, 2009 12:01 PM
Hello???
Would really appreciate an answer.
Thanks,
Pam

This may not be a perfect solution for you but it worked for my situation.
I wanted to grab some data from Grid Control's MGMT$JOB_STEP_HISTORY table but I couldnt' create an Interactive Report due to the existance of a CLOB column. I cheated this by creating a view on the GC DB, grabbing the first 4000 characters and turning it into a varchar2 column:
create view test_job_step_history as
select job_Name, target_name, status, start_time, end_time, to_char(substr(output,1,4000)) output
from MGMT$JOB_STEP_HISTORY where trunc(end_time) > trunc(sysdate)-90
In an APEX Interactive Report:
select * from test_job_step_history@GCDB
Granted, the output looks aweful right now but I am only looking for a very particular output (failed, denied, ORA-, RMAN-, etc) so the formatting isn't the most important thing to me right now.
If anyone can improve -- and I'm sure you can -- on this I'd love to hear about it.
Thanks,
Rich

Is it possible to add support for new database type in Data Modeler?

Hi,
I see that Data Modeler v.4 supports different versions of Oracle, DB2 and MS SQL. Is it possible to add support for a new database family,
PostgreSQL for example? I hoped that RDBMS Site editor can do it, but so far I don't see any possibility to add XML files with metadata for a new RDBMS.
I did it previously for PowerDesigner were it is possible to add and modify definitions for new relational databases.
Thank you,
Sergei

There is discussion option as an out of the box feature. Check this: BI launch pad 4.0: Participate in a discussion about a document

Data modeler in 2.1 - how to export metadata

How do you do an export in the 2.1 EA for the data modeler? I..e do a 'bottom up' model?
The documentation is written for the standalone datamodeler, file-import/export. How do you do it in 2.1?
Edited by: Bazza on 27-Oct-2009 03:54

Hi,
standalone Data Modeler is cost option. Data Modeler Viewer is bundled into SQL Developer 2.1 - it's free. You can do following with viewer :
1) Open designs created with Data Modeler - it's in read only mode
2) Visualize tables and object types from SQL Dev browser when there is no open Data Modeler design - select tables/views on SQL Developer browser tree and drag them on relational model window - FK are imported if parent table is among selected or already is imported; for object types - they should be dropped on Data Types model window. This works for Oracle and SQL Server - we are going to support it for all databases supported by Data Modeler (including JDBC import). And you can do some rearrangement of tables but the rest is in read only mode - no additional import/export.
Philip

SQL Developer Data Modeler notation

Hi,
I want to create a diagram for a database. While Data Modeler is very useful for generating DDL, I don't like that the only notation type you can choose from are Crows Notations and BachMan. I would like to use the Min-Max ISO notation but I don't know, is there a plugin to allow this?
Thanks!

Wrong forum, please try to ask your question at the SQL Developer Data Modeler forum: SQL Developer Data Modeler

Questions related SQL Developer Data Modeling

1) Is it possible to import ERwin 3.5.2 version(called as Platinum Erwin) erx file to SQl developer data
modeling tool?
2) When this tool going to be released as a standalone Product?
3) One of our requirements is calculating Table and Database size from Data model tool(as a volumetric
report). Is it possible in this tool?. Also i couldn't able to define storage properties(like Tablespace).

I have also replied to you in the feedback application where you logged your query. I have added my response here for others who may be interested.
1)We currently only support import from ERwin 4.x
2) It is company policy not to disclose release dates. We plant to release in 2009.
3) You can define Tablespace using the Physical model. Expand the Relational node and then the physical model. The two nodes you can use for your tablespaces are the Tablespaces and Segment Templates nodes.
Regards
Sue Harper

Information on logical data model.

Hi All,
Can anybody through some light on what is a logical data model, how it should be
created?
Please share documents if any.
Regards,
Pramod

Hello Pramod,
you can refer the below links for data modeling:
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/5d4211fa-0301-0010-9fb1-ef1fd91719b6
http://www.sap.info/public/INT/int/index/Category-28943c61b1e60d84b-int/0/articlesVersions-31279471c9758576df
Regarding the Logical Data Modeling, you can refer the below link for basic understanding:
http://en.wikipedia.org/wiki/Logical_data_model
Hope this will help you.
TNR,
Saurabh...
Reward if found useful.
Edited by: Saurabh Kumar Sahu on Jul 28, 2008 10:11 AM

Just wondering, what kinda tools do you prefer for data modeling

Reading alot about datamodeling, from E-R diagrams to UML. In your database designs. From the conceptual, logical and physical model. What tool you prefer the most and why. What is a good tool for such things. And does Oracle supply such tools. Just curious as to what the professionals use.
Pete

ER-WIN is your tool for Database physical / Logical data modeling.

Oracle Data Modeler - No Table Relationship

I am having problems when I use the import data dictionary function. First I choose my schema and tables. then after the import is complete, the tables are there but, there is no relationship between the table's keys. I am not sure if I do not have it configured correctly or what it could be. All the examples I find online seem to work correctly. ANy ideas?
Edited by: user13161578 on Nov 12, 2010 8:31 AM

Have you tried with one of the sample schemas, like HR? Are you selecting tables with FK relationships between them?
What database version and Data Modeler version are you using?
Sue

How can i get data from another database SQL Server use database link from

I have a database link from Oracle connect to SQL Server database with user cdit connect default database NorthWind.How can I get data from another database(this database in this SQL Server use this database link)?

hi,
u should see following documentation:
Oracle9i Heterogeneous Connectivity Administrator's Guide
Release 1 (9.0.1)
Part Number A88789_01
in it u just go to chapter no. 4 (using the gateway),,u'll find ur answer there.
regards
umar

How to fetch,update,insert the data using database link on diff. servers

I am using two oracle server.
1st) Oracle 9i ( Server1 )
2nd) Oracle 10g ( Server2 )
3) Forms 6i
I have created a database link on Server 1 for connecting to Server 2.
I written a piece of code which will be executed in Forms 6i and is connected to Server1.
The piece of code brings the data from SErver2 via cursor and I try to insert / update the relevant records
in my Server1 database users.
The Insert/Update runs sucessfully but at the time of commit I get the following errors
in Forms ORA-01041:internal error. hostdef does not exist.
Then it forcefully rollback the data and come out of the application.
contact :email-id : [email protected]

Suggest you test your code from sqlplus before running from forms.
Start by testing a simple "select sysdate from dual@<database link>;" then test select from application_table@<database link> then test the insert/update code. After it works from sqlplus, then try it from forms.

How to rename a View Link in a data model?

In JDeveloper 9.0.3, I create a simple BC4J project with a master and a detail. The business components are properly created.
When I try to design the data model for the module, I am able to link the view for the master and the view for the detail, there is no problem to rename the view objects that I select in my data model, but I found no way to rename the view links used between the view objects.
I always get an automatically generated name, like "FkForeignDetailLink1". This is what I see in the data model, and also in the structure of the module, in the "View Link Members" section.
I am able to modify the properties of this view link, but not its name. Am I missing something?
TIA

to clarify... In the AM wizard, you are trying to rename the instances of view objects and view links?
If so, you are right, there is no way to rename view links on that panel. We are working on a better way to do that for the next release. The only way I know of to rename the view links is to shut jdev down and edit the XML for the application modele. This can be dangerous if you get it wrong, so make a backup before attempting this. The hint with renaming things OUTSIDE JDeveloper, I already know, but I don't like much.
As for the AM wizard, I just noticed that I cannot do it inside. But that's no problem for me, as lots of details cannot be done inside the wizard, but there is a way to customize them afterwards. My real problem is that didn't find ANY way of doing it.
A question for you if I may. Why are you renaming the view link instances? I though most users would use the detail view instance directly. The detail view instance would in turn look up the appropriate view link into, what ever its name was. The only place where I saw the bad view link names displayed in JDev was the Structure pane of the AM, under View Link Members. But there is no way to modify them there. As for the detail view instance, I didn't find a place to get to the view link at design time (in 9.0.3.988).
Could you be more precise, please?
Thanks again,
Adrian

How to create a database link on an ms acces data source

Hello every body
Is it possible to create a database link on an MS access data source under
oracle 10 g and Apex ?
If yes how to do it ?
Thanks in advace

I don't know what Apex is!!! But try to follow these instructions.
It works for Oracle 9i.
As far as I know, you are supposed to have installed other than ORACLE Client to complete these instructions.
1. Control Panel / Administrative Tools / Data Sources (ODBC)
Folder: System DSN /
click add
Choose : Microsoft Access Driver
Data Source Name : my_test
Description : any_description_you_want
click Database/Select... : full pathname for <your_file.mdb>
click OK
Click OK
2. Goto OH\hs\admin:
2.1) Create a copy of "inithsodbc.ora" file giving it this name:
initmy_test.ora
2.2) Edit "initmy_test.ora" and change as below.
# HS init parameters
HS_FDS_CONNECT_INFO = my_test
HS_FDS_TRACE_LEVEL = OFF
3. Add this entry to listener ( Don't forget to stop/start the listener )
(SID_DESC =
(SID_NAME = my_teste)
(ORACLE_HOME = <Path to OH> ) ### Ex: D:\ORANT901
(PROGRAM = hsolesql)
4. Now you need to add entries to point to the HS in the tnsnames.ora :
access =
(DESCRIPTION=
(ADDRESS=(PROTOCOL=tcp)(HOST=<your_host>)(PORT=1521))
(CONNECT_DATA=(SID=my_test))
(HS=my_test)
5. Now you need to go into the database and create the database link:
CREATE PUBLIC DATABASE LINK "ACCESS_DB" USING 'access';
6. select * from your_table@ACCESS_DB;
HTH
RK
Message was edited by:
RKravcenko

Database link in data modeler

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