Mapping to different databases

We currently use TOPLink as persistence layer in our product. Currently the complete object model maps to one database. I was wondering if it is possible to map different objects to different physical databases (with different structures). E.g. We map the income object to a certain table in db1 (database only containing income data) and the investment portfolios to another database; etc.
Does anybody has experience with this? Thanks for your reply.

Hi,
In order for you to work with two different databases at the same application you will need to use Session Broker.
You can find an example of doing such a thing under "D:\toplink903\examples\core\examples\sessions\broker".
In addition, you can find a large section in the 'TopLink foundation library' about the subject.
Raanan.

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              at java.lang.reflect.Method.invoke(Native Method)
              at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              at $Proxy58.start(Unknown Source)
              at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              at weblogic.management.Admin.finish(Admin.java:644)
              at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              at weblogic.Server.main(Server.java:35)
              >
              <Jul 23, 2003 4:33:10 PM PDT> <Error> <JMS> <Failed to deploy JMS Server "notifyServer"
              due to weblogic.jms.common.ConfigurationException: JMS can not open store.
              weblogic.jms.common.ConfigurationException: JMS can not open store
              at weblogic.jms.backend.BackEnd.initialize(BackEnd.java:395)
              at weblogic.jms.JMSService.createBackEnd(JMSService.java:906)
              at weblogic.jms.JMSService.addJMSServer(JMSService.java:1273)
              at weblogic.jms.JMSService.addDeployment(JMSService.java:1169)
              at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:360)
              at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:285)
              at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:239)
              at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:199)
              at java.lang.reflect.Method.invoke(Native Method)
              at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              at $Proxy39.updateDeployments(Unknown Source)
              at weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(ServerMBean_CachingStub.java:2977)
              at weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(ApplicationManager.java:372)
              at weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManager.java:160)
              at java.lang.reflect.Method.invoke(Native Method)
              at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
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              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              at $Proxy58.start(Unknown Source)
              at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              at weblogic.management.Admin.finish(Admin.java:644)
              at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              at weblogic.Server.main(Server.java:35)
              ----------- Linked Exception -----------
              java.io.IOException: JMS JDBC store, connection pool = <jmsPool>, prefix = <qa.JMS_SERVER_>:
              failed to create tables
              at weblogic.jms.store.JDBCIOStream.throwIOException(JDBCIOStream.java:311)
              at weblogic.jms.store.JDBCIOStream.rebuildTables(JDBCIOStream.java:1400)
              at weblogic.jms.store.JDBCIOStream.open(JDBCIOStream.java:376)
              at weblogic.jms.store.JMSStore.open(JMSStore.java:110)
              at weblogic.jms.backend.BEStore.open(BEStore.java:180)
              at weblogic.jms.backend.BackEnd.initialize(BackEnd.java:390)
              at weblogic.jms.JMSService.createBackEnd(JMSService.java:906)
              at weblogic.jms.JMSService.addJMSServer(JMSService.java:1273)
              at weblogic.jms.JMSService.addDeployment(JMSService.java:1169)
              at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:360)
              at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:285)
              at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:239)
              at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:199)
              at java.lang.reflect.Method.invoke(Native Method)
              at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              at $Proxy39.updateDeployments(Unknown Source)
              at weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(ServerMBean_CachingStub.java:2977)
              at weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(ApplicationManager.java:372)
              at weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManager.java:160)
              at java.lang.reflect.Method.invoke(Native Method)
              at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              at $Proxy58.start(Unknown Source)
              at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              at weblogic.management.Admin.finish(Admin.java:644)
              at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              at weblogic.Server.main(Server.java:35)
              >
              

    Hi Michelle,
              I suspect a permission problem where the new tables are created
              using the JDBC driver's default schema, but the prefix
              specifies another schema "qa". So the tables are getting
              created, but aren't found.
              Work-around one:
              manually extract, edit, and run the ddl that creates
              the tables to specify the schema. Prepend
              "qa.JMS_SERVER_" to all table names
              (This is fairly simple to do.)
              http://edocs.bea.com/wls/docs61/jms/appb.html#999286
              Work-around two:
              Don't include "qa." in the prefix.
              (i'm not sure if this will work)
              Work-around three:
              Change the username of the JDBC pool to "qa".
              (i'm not sure if this will work)
              Work-around four:
              Change the schema for the tables that were created
              under the JDBC driver's default schema to "qa".
              (I'm not sure how this is done, or even
              if it is possible. Database specific.)
              Tom
              Michelle Lian wrote:
              > Hi,
              >
              > I'm running WebLogic 6.1 sp3/Oracle 8.1.6 and I configure the JMS JDBC store for
              > persistent messaging. I was working fine until I switched to use a different database
              > machine which has the same software configuration as the old one. It was giving
              > me "failed to create tables" error at start up time. But I checked the database
              > and found out the two tables (<prefix>JMSSTORE and <prefix>JMSSTATE) were both
              > created and I was able to query although they don't contain any data. By the way,
              > I'm using thin client.
              >
              > Anyone can help? Thanks a lot!
              >
              > Here's the exception:
              >
              > <Jul 23, 2003 4:33:10 PM PDT> <Alert> <JMS> <JMSServer "notifyServer", store failed
              > to open, java.io.IOException: JMS JDBC store, connection pool = <jmsPool>, prefix
              > = <qa.JMS_SERVER_>: failed to create tables.
              > java.io.IOException: JMS JDBC store, connection pool = <jmsPool>, prefix = <qa.JMS_SERVER_>:
              > failed to create tables
              > at weblogic.jms.store.JDBCIOStream.throwIOException(JDBCIOStream.java:311)
              > at weblogic.jms.store.JDBCIOStream.rebuildTables(JDBCIOStream.java:1400)
              > at weblogic.jms.store.JDBCIOStream.open(JDBCIOStream.java:376)
              > at weblogic.jms.store.JMSStore.open(JMSStore.java:110)
              > at weblogic.jms.backend.BEStore.open(BEStore.java:180)
              > at weblogic.jms.backend.BackEnd.initialize(BackEnd.java:390)
              > at weblogic.jms.JMSService.createBackEnd(JMSService.java:906)
              > at weblogic.jms.JMSService.addJMSServer(JMSService.java:1273)
              > at weblogic.jms.JMSService.addDeployment(JMSService.java:1169)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:360)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:285)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:239)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:199)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy39.updateDeployments(Unknown Source)
              > at weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(ServerMBean_CachingStub.java:2977)
              > at weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(ApplicationManager.java:372)
              > at weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManager.java:160)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy58.start(Unknown Source)
              > at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              > at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              > at weblogic.management.Admin.finish(Admin.java:644)
              > at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              > at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              > at weblogic.Server.main(Server.java:35)
              >
              > <Jul 23, 2003 4:33:10 PM PDT> <Error> <JMS> <Failed to deploy JMS Server "notifyServer"
              > due to weblogic.jms.common.ConfigurationException: JMS can not open store.
              > weblogic.jms.common.ConfigurationException: JMS can not open store
              > at weblogic.jms.backend.BackEnd.initialize(BackEnd.java:395)
              > at weblogic.jms.JMSService.createBackEnd(JMSService.java:906)
              > at weblogic.jms.JMSService.addJMSServer(JMSService.java:1273)
              > at weblogic.jms.JMSService.addDeployment(JMSService.java:1169)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:360)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:285)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:239)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:199)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy39.updateDeployments(Unknown Source)
              > at weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(ServerMBean_CachingStub.java:2977)
              > at weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(ApplicationManager.java:372)
              > at weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManager.java:160)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy58.start(Unknown Source)
              > at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              > at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              > at weblogic.management.Admin.finish(Admin.java:644)
              > at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              > at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              > at weblogic.Server.main(Server.java:35)
              > ----------- Linked Exception -----------
              > java.io.IOException: JMS JDBC store, connection pool = <jmsPool>, prefix = <qa.JMS_SERVER_>:
              > failed to create tables
              > at weblogic.jms.store.JDBCIOStream.throwIOException(JDBCIOStream.java:311)
              > at weblogic.jms.store.JDBCIOStream.rebuildTables(JDBCIOStream.java:1400)
              > at weblogic.jms.store.JDBCIOStream.open(JDBCIOStream.java:376)
              > at weblogic.jms.store.JMSStore.open(JMSStore.java:110)
              > at weblogic.jms.backend.BEStore.open(BEStore.java:180)
              > at weblogic.jms.backend.BackEnd.initialize(BackEnd.java:390)
              > at weblogic.jms.JMSService.createBackEnd(JMSService.java:906)
              > at weblogic.jms.JMSService.addJMSServer(JMSService.java:1273)
              > at weblogic.jms.JMSService.addDeployment(JMSService.java:1169)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployment(DeploymentTarget.java:360)
              > at weblogic.management.mbeans.custom.DeploymentTarget.addDeployments(DeploymentTarget.java:285)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateServerDeployments(DeploymentTarget.java:239)
              > at weblogic.management.mbeans.custom.DeploymentTarget.updateDeployments(DeploymentTarget.java:199)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy39.updateDeployments(Unknown Source)
              > at weblogic.management.configuration.ServerMBean_CachingStub.updateDeployments(ServerMBean_CachingStub.java:2977)
              > at weblogic.management.mbeans.custom.ApplicationManager.startConfigManager(ApplicationManager.java:372)
              > at weblogic.management.mbeans.custom.ApplicationManager.start(ApplicationManager.java:160)
              > at java.lang.reflect.Method.invoke(Native Method)
              > at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
              > at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
              > at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:360)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1557)
              > at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1525)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
              > at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
              > at $Proxy58.start(Unknown Source)
              > at weblogic.management.configuration.ApplicationManagerMBean_CachingStub.start(ApplicationManagerMBean_CachingStub.java:480)
              > at weblogic.management.Admin.startApplicationManager(Admin.java:1234)
              > at weblogic.management.Admin.finish(Admin.java:644)
              > at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:524)
              > at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:207)
              > at weblogic.Server.main(Server.java:35)
              >
              

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    Hi,
    Jdeveloper - 10.1.3.4
    Application - ADF/BC
    Oracle Application Server - 10.1.3
    Above our the specifications for our application,
    We have two database schemas different for development and production therfore we have different databse connections for the two,
    we have one application which is in production and enhacements on the same application are done by the development team.
    Since we have two different schemas for developement and prduction we use different database connections for the application on development and production.
    The problem is our Model and View Controller project are same, only the database connection file changes that's why we are able to host only on application at a time on our OAS. This is probably because the URL generated by OAS for developemnt and prodyction application is same.
    Is there a way we can host two instances of the same application with two different database connections on the a single OAS.
    Thanks & Regards,
    Raksha

    Use different deployment profiles each with a different context root for your application?
    See: http://one-size-doesnt-fit-all.blogspot.com/2009/02/configuring-separate-dev-test-prod-urls.html

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