Multiple connections in one app

Hi,
I have a web app and am using JDev 10.1.3.2 with ADFBC. Some of the data will come from SQL2000 while other info will come from Oracle 10g. My UI will require presentation of a mix. But I am only able (it appears) to use one db connection in one project. What's the best way to address using multiple datasources?
Thanks!
Ginni

hi ginnim
Maybe this blog story by Steve Muench could be of some help:
"How Granular Should My Application Modules Be?"
http://radio.weblogs.com/0118231/stories/2005/05/27/howGranularShouldMyApplicationModulesBe.html
success
Jan Vervecken

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Multiple connections in one project

Hi,
Is there perhaps some kind of a document describing a 'best practice' for using multiple connections in a ADF BC application. One connects to an oracle DB another to a SQLServer.
I suppose I need to create two different services? Anybody having experience with this?
Regards,
Koen Verhulst

Among other things, the BC4J Configuration defines the name of the JDBC connection to use. To solve your problem, you can create two Configurations one for each database. The JDBC connection value will be the only different element between these two Configurations. To create a BC4J Configuration in JDeveloper, right click on the AppModule node and then click Configurations...,
Use oracle.jbo.client.Configuration class to create AppModules connected to the database you want.,
import oracle.jbo.*;
import oracle.jbo.client.Configuration;
String am = "demo.DemoModule"; // Fully-qualified application module name
// Configuration name with JDBC connection to source database
String cf1 = "DemoModuleSourceDb";
ApplicationModule amSrc = Configuration.createRootApplicationModule(am,cf1);
// Configuration name with JDBC connection to dest database
String cf2 = "DemoModuleDestDb";
ApplicationModule amDest = Configuration.createRootApplicationModule(am,cf2);
Note that the AM name can also be different if you want.
Hope this helps,
Sathish.
I want to access several Databases from one BC4J-Project.
For example I want to write an application, which collects data from one database, does some computation and stores the results in a second database.
I would prefer to use BC4J-Components for both, the source and the target database, but unfortunately I can select only one connection per BC4J-Project.
Has anyone got an idea, how I can access more than one database-connection from one BC4J-Project without having to write all the JDBC-Stuff on my own? JDev-Team, can you please give a hint?

Multiple connections in one BC4J Project

I want to access several Databases from one BC4J-Project.
For example I want to write an application, which collects data from one database, does some computation and stores the results in a second database.
I would prefer to use BC4J-Components for both, the source and the target database, but unfortunately I can select only one connection per BC4J-Project.
Has anyone got an idea, how I can access more than one database-connection from one BC4J-Project without having to write all the JDBC-Stuff on my own? JDev-Team, can you please give a hint?

Among other things, the BC4J Configuration defines the name of the JDBC connection to use. To solve your problem, you can create two Configurations one for each database. The JDBC connection value will be the only different element between these two Configurations. To create a BC4J Configuration in JDeveloper, right click on the AppModule node and then click Configurations...,
Use oracle.jbo.client.Configuration class to create AppModules connected to the database you want.,
import oracle.jbo.*;
import oracle.jbo.client.Configuration;
String am = "demo.DemoModule"; // Fully-qualified application module name
// Configuration name with JDBC connection to source database
String cf1 = "DemoModuleSourceDb";
ApplicationModule amSrc = Configuration.createRootApplicationModule(am,cf1);
// Configuration name with JDBC connection to dest database
String cf2 = "DemoModuleDestDb";
ApplicationModule amDest = Configuration.createRootApplicationModule(am,cf2);
Note that the AM name can also be different if you want.
Hope this helps,
Sathish.
I want to access several Databases from one BC4J-Project.
For example I want to write an application, which collects data from one database, does some computation and stores the results in a second database.
I would prefer to use BC4J-Components for both, the source and the target database, but unfortunately I can select only one connection per BC4J-Project.
Has anyone got an idea, how I can access more than one database-connection from one BC4J-Project without having to write all the JDBC-Stuff on my own? JDev-Team, can you please give a hint?

Multiple Connections in one transaction?

Hello,
we use the OC4J 9.0.3 with the fellowing DataSource configuration:
<data-source
class="oracle.jdbc.pool.OracleConnectionCacheImpl"
name="OracleDS"
location="jdbc/OracleCoreDS"
xa-location="jdbc/xa/OracleXADS"
ejb-location="jdbc/OracleDS"
connection-driver="oracle.jdbc.driver.OracleDriver"
username="xxx"
password="xxx"
url="jdbc:oracle:thin:@10.50.40.17:1521:vbstest"
inactivity-timeout="30"
max-connections="30"
/>
In our project we use CMP/BMP-Entitybeans and CMR. During a complex update we got a SQL-Exception with the message, that a foreign key constrain has been violated (primary key does not exist, even it has been inserted in the same transaction). Because we know, that the same code runs on JBoss 3.0, we have assumed that OC4J use more than one connection and so we have enabled the connection debug.
The result is, that OC4J created in one transaction more that 6 connections. All beans using the same datasource.
Is there is a way to configure this beavior? Or someone have a idea, why OC4J use more than one connection in one tranaction?
Here the connection debug log:
2003-03-18 10:42:31,162 DEBUG (10.50.40.115-ruethja-0) [VDDBean_PersistenceManager11] Connection: [Connection : com.evermind.sql.OrionCMTConnection@a1fa8e]
2003-03-18 10:42:31,602 DEBUG (10.50.40.115-ruethja-0) [DienststelleBeanImpl_PersistenceManager73] Connection: [Connection : com.evermind.sql.OrionCMTConnection@7a6aa8]
2003-03-18 10:42:32,433 DEBUG (10.50.40.115-ruethja-0) [VorgangBeanImpl_PersistenceManager41] Connection: [Connection : com.evermind.sql.OrionCMTConnection@1af986c]
2003-03-18 10:42:32,483 DEBUG (10.50.40.115-ruethja-0) [VDDBean_PersistenceManager11] Connection: [Connection : com.evermind.sql.OrionCMTConnection@1d372d7]
2003-03-18 10:42:32,674 DEBUG (10.50.40.115-ruethja-0) [VorgangBeanImpl_PersistenceManager41] Connection: [Connection : com.evermind.sql.OrionCMTConnection@8b64b3]
2003-03-18 10:42:32,724 DEBUG (10.50.40.115-ruethja-0) [DienststelleBeanImpl_PersistenceManager73] Connection: [Connection : com.evermind.sql.OrionCMTConnection@1e0e2ba]

could you post the source of session bean may be i can help you then
regards,
ashish saraf

Multiple instances of one app of the same name

Hello,
we have few FMS/AMS servers, versions 4, 4.5 and 5, running some kind of internet TV tubes on them.
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-<data>
<_0>tv_app/tube25</_0>
<_1>tv_app/tube2</_1>
<_2>tv_app/tube21</_2>
<_3>tv_app/tube2</_3>
<_4>tv_app/tube2</_4>
</data>
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I have following questions related to this:
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I already noticed following aspects to have influence on the possibility to run multiple instance with the same name and got rid of them but problem still persists:
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- using false as return value in onAppStop event handler - when reloaded, new instance is started but the old one persists
I am very eager to hear some explanation or clarification of such logic as it comes to me as some kind of internal bug as I have found everywhere that the instances names should be always unique....
Thanks

I just want to note that my recommendations led my clients to purchase more than 5 licences of FMIS/AMIS througt the time.
As I see how low is the passion to react to any problem on Adobe side, I would have probably changed my mind.
This is really pain in the *** as any call to adobe official contact (taken on mind that to find one is a big quest by itself) lead just to reply "pay nasty amount for our consultancy Sir!" and it does not look any better here....
I am no novice on FMS/AMS platform, working with it more than 6 years throught many projects and I would not ask for some stupid questions which could be solved just by looking to documentation or could be solved by some performance eperience.
I am really upset for this :/

Multiple connection in one form, is it possible?

Im trying to access two different database (P.O.7 and the other is an ODBC Compliant) in one form.
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Any suggestion on what should i do with this....

Check out the EXEC_SQL command under help in Forms
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TS1424 Multiple charges for one app download.

I've been charged multiple times for a $1.99 add-on download for the "Dragonvale" app. Additionally, there were other add-ons that were mistakenly charged to my account. I noticed at the time of the download that the system seemed to lose the transaction but then recovered. How do I get the Apple store to apply credits for all the erroneous charges?
thank you,
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'SPROXY' - Multiple PI Systems connected to one ECC System for ABAP Proxies

Dear Experts
I am currently facing an issue when I want to connected multiple PI instances to one ECC client for
ABAP Proxy purposes.
In transaction 'SPROXY', in the Enterprise Service Brower, only one PI instance is shown and accessable.
Can this setting be changed to allow multiple PI systems in this Enterprise Service Browser?
Thanks for your ideas.
Mathias

Hi,
Check these replies.
R/3 connected to multiple XI instances
'SPROXY' - Multiple PI Systems connected to one ECC System for ABAP Proxies
Multiple XI Instances
Multiple XI instances or multiple app server
Thanks,
Vijaya.
Edited by: Vijaya Lakshmi Palla on Jun 4, 2008 11:43 AM

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Hi,
I need to clarrify that, Shall I use one Datasource for multiple connection pool in distributed transaction?
Thanks with regards
Suresh

No. If its transactions across multiple databases you should use different datasources.

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Hi,
Using : SQL Developer 1.2.29.98, Oracle Database 9i on Windows XP.
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We have 3 distinct teams doing Java development for CRM IPC configurators
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another for a Performance Assessment
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Hi all,
I am using Oracle Reports 10g R2. Could someone tell me if Oracle Reports supports multiple database connections for one rdf file, like this (using servlet)
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Edited by: user12239004 on Apr 27, 2010 2:14 AM

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Multiple connections in one app

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