CMP Entity Bean wrong generated ejbfindByPrimaryKey

i am using Netbeans 6.1
with GlassFish V2
and JavaDB
i wrote a basic CMP Entity Bean and it gives me this exception
JDO74004: Bean 'ProducttbBean' method ejbFindByPrimaryKey:
com.sun.jdo.api.persistence.support.JDODataStoreException: JDO76400: Got a JDBC SQLException while executing the SQL statement:
SQL statement<select t0."PRODUCTID", t0."PRODUCTNAME" from "PRODUCTTBBEAN" t0 where t0."PRODUCTID" = CAST (? AS INTEGER)> with input values:java.lang.Integer:1.
Please examine the SQLException for more information.
NestedException: java.sql.SQLSyntaxErrorException: Table/View 'PRODUCTTBBEAN' does not exist.
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStoreManager.throwJDOSqlException(SQLStoreManager.java:645)
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStoreManager.executeQuery(SQLStoreManager.java:479)
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStoreManager.retrieve(SQLStoreManager.java:376)
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStateManager.retrieve(SQLStateManager.java:2059)
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStateManager.reload(SQLStateManager.java:1197)
at com.sun.jdo.spi.persistence.support.sqlstore.SQLStateManager.reload(SQLStateManager.java:1153)
at com.sun.jdo.spi.persistence.support.sqlstore.impl.PersistenceManagerImpl.getObjectById(PersistenceManagerImpl.java:658)
at com.sun.jdo.spi.persistence.support.sqlstore.impl.PersistenceManagerWrapper.getObjectById(PersistenceManagerWrapper.java:276)
at mybeanspack.ProducttbBean_2002768886_ConcreteImpl.ejbFindByPrimaryKey(ProducttbBean_2002768886_ConcreteImpl.java:148)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.enterprise.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1067)
at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:176)
at com.sun.ejb.containers.BaseContainer.invokeTargetBeanMethod(BaseContainer.java:2895)
at com.sun.ejb.containers.EntityContainer.invokeFindByPrimaryKey(EntityContainer.java:803)
at com.sun.ejb.containers.EJBLocalHomeInvocationHandler.invoke(EJBLocalHomeInvocationHandler.java:233)
at $Proxy22.findByPrimaryKey(Unknown Source)
at org.apache.jsp.index_jsp._jspService(index_jsp.java from :63)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:288)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
the table name i'm querying at is
PRODUCTTB
and in the generated select statement
PRODUCTTBBEAN
i need help to solve this problem

This is a copy of the sun-cmp-mappings.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sun-cmp-mappings PUBLIC "-//Sun Microsystems, Inc.//DTD Application Server 8.1 OR Mapping//EN" "http://www.sun.com/software/appserver/dtds/sun-cmp-mapping_1_2.dtd">
<sun-cmp-mappings>
<sun-cmp-mapping>
<schema>BOOSHA_CMPBeanApplication-ejb</schema>
<entity-mapping>
<ejb-name>ProducttbBean</ejb-name>
<table-name>PRODUCTTB</table-name>
<cmp-field-mapping>
<field-name>productid</field-name>
<column-name>PRODUCTTB.PRODUCTID</column-name>
<fetched-with>
<default/>
</fetched-with>
</cmp-field-mapping>
<cmp-field-mapping>
<field-name>productname</field-name>
<column-name>PRODUCTTB.PRODUCTNAME</column-name>
<fetched-with>
<default/>
</fetched-with>
</cmp-field-mapping>
</entity-mapping>
</sun-cmp-mapping>
</sun-cmp-mappings>
the table name is right in the descriptor.

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         at UserHome_EntityHomeWrapper2.create(UserHome_EntityHomeWrapper2.java:1114)
         at java.lang.reflect.Method.invoke(Native Method)
         at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:80)
         at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)
    at connection to localhost/127.0.0.1 as admin
         at com.evermind.server.rmi.RMIConnection.EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER(RMIConnection.java:1530)
         at com.evermind.server.rmi.RMIConnection.invokeMethod(RMIConnection.java:1453)
         at com.evermind.server.rmi.RemoteInvocationHandler.invoke(RemoteInvocationHandler.java:53)
         at com.evermind.server.rmi.RecoverableRemoteInvocationHandler.invoke(RecoverableRemoteInvocationHandler.java:22)
         at __Proxy0.create(Unknown Source)
         at com.emc.ksc.ejb.user.UserBeanTestClient1.create(UserBeanTestClient1.java:73)
         at com.emc.ksc.ejb.user.UserBeanTestClient1.<init>(UserBeanTestClient1.java:49)
         at com.emc.ksc.ejb.user.UserBeanTestClient1.main(UserBeanTestClient1.java:1077)

    Hi Young,
    From the information you have supplied, my guess is that the SQL
    string that OC4J is sending to SQL-Server is incorrect. So it may
    help if you could see the exact SQL string. In order to see the
    SQL string, I suggest you either run OC4J in "debug" mode, or try
    using "P6 Spy".
    The following web page has details on running OC4J in "debug" mode:
    http://kb.atlassian.com/content/atlassian/howto/orionproperties.jsp
    And here is the web page for "P6 Spy"
    http://www.provision6.com/
    And these other web sites may also be of help (in general):
    http://www.orionserver.com
    http://www.orionsupport.com
    http://www.atlassian.com
    http://www.elephantwalker.com
    Good Luck,
    Avi.

  • Problem in creating CMP Entity Bean - Pls Help

    I am trying to build one simple project having jsps to get connected to CMP Entity Bean.
    But while deploying I am getting the following error...
    Nov 15, 2004 10:59:09... Info: End of log messages of the target system.
    Nov 15, 2004 10:59:09... Info: ***** End of SAP J2EE Engine Deployment (J2EE Application) *****
    Nov 15, 2004 10:59:09... Error: Execution of deployment action for "EntityCMPAppln" aborted:
    Caught exception during application deployment from SAP J2EE Engine's deploy service:
    java.rmi.RemoteException: Error occurred while starting application bcone.com/EntityCMPAppln and wait.
    Reason: Complex error : server ID 6155350:Application bcone.com/EntityCMPAppln cannot be started, because it has hard reference to resource CONFIG_DB with type javax.sql.DataSource, but it is not active on the server.
    (message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
    Nov 15, 2004 10:59:09... Error: Deployment NOT successful for EntityCMPAppln
    Nov 15, 2004 10:59:09... Info: SDM configuration: Do not automatically start/stop J2EE Engine. Do not restore state of J2EE Engine now.
    Nov 15, 2004 10:59:09... Error: -
    At least one of the Deployments failed -
    Nov 15, 2004 11:05:16... Info: Request for Logon as admin accepted
    ===========================================
    Nov 15, 2004 11:05:08... Info: =   Starting to execute command 'remotegui'   =
    Nov 15, 2004 11:05:08... Info: ===============================================
    Nov 15, 2004 11:05:10... Info: SDM started successfully.
    Please tell me how to activate the CONFIG_DB reference in database. Or what Extra I have to do to run this example.
    Regards,
    Vivek Ojha

    Dear Benny,
    The code of the required files is pasted below....
    Application.XML
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE application PUBLIC "-//Sun Microsystems, Inc.//DTD J2EE Application 1.3//EN"
                                 "http://java.sun.com/dtd/application_1_3.dtd">
    <application>
        <display-name>EntityCMPAppln</display-name>
        <description>EAR description</description>
        <module>
            <ejb>EntityCMPEjb.jar</ejb>
        </module>
        <module>
            <web>
                <web-uri>EntityCMPWeb.war</web-uri>
                <context-root>/student</context-root>
            </web>
        </module>
    </application>
    Application-j2ee-engine.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE application-j2ee-engine SYSTEM "application-j2ee-engine.dtd">
    <application-j2ee-engine>
         <provider-name>bcone.com</provider-name>
         <fail-over-enable
              mode="disable"/>
    </application-j2ee-engine>
    data-source-aliases.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE data-source-aliases SYSTEM "data-source-aliases.dtd">
    <data-source-aliases>
         <aliases>
              <data-source-name>${com.sap.datasource.default}</data-source-name>
              <alias>STUDENTDB</alias>
         </aliases>
    </data-source-aliases>
    ejb-j2ee-engine.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE ejb-j2ee-engine SYSTEM "ejb-j2ee-engine.dtd">
    <ejb-j2ee-engine>
         <enterprise-beans>
              <enterprise-bean>
                   <ejb-name>StudentBean</ejb-name>
                   <resource-ref>
                        <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                        <res-link>STUDENTDB</res-link>
                   </resource-ref>
                   <entity-props/>
              </enterprise-bean>
         </enterprise-beans>
    </ejb-j2ee-engine>
    ejb-jar.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
    <ejb-jar>
         <description>EJB JAR description</description>
         <display-name>EJB JAR</display-name>
         <enterprise-beans>
              <entity>
                   <ejb-name>StudentBean</ejb-name>
                   <home>com.bcone.ejb.StudentHome</home>
                   <remote>com.bcone.ejb.Student</remote>
                   <ejb-class>com.bcone.ejb.StudentBean</ejb-class>
                   <persistence-type>Container</persistence-type>
                   <prim-key-class>java.lang.String</prim-key-class>
                   <reentrant>False</reentrant>
                   <cmp-version>2.x</cmp-version>
                   <abstract-schema-name>StudentBean</abstract-schema-name>
                   <cmp-field>
                        <field-name>studentId</field-name>
                   </cmp-field>
                   <cmp-field>
                        <field-name>lname</field-name>
                   </cmp-field>
                   <cmp-field>
                        <field-name>standard</field-name>
                   </cmp-field>
                   <cmp-field>
                        <field-name>fyear</field-name>
                   </cmp-field>
                   <cmp-field>
                        <field-name>fname</field-name>
                   </cmp-field>
                   <primkey-field>studentId</primkey-field>
                   <resource-ref>
                        <res-ref-name>jdbc/STUDENTDB</res-ref-name>
                        <res-type>javax.sql.DataSource</res-type>
                        <res-auth>Container</res-auth>
                   </resource-ref>
              </entity>
         </enterprise-beans>
    </ejb-jar>
    persistent.xml
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE persistent-ejb-map SYSTEM "persistent.dtd">
    <persistent-ejb-map>
         <locking
              type="Table"/>
         <db-properties>
              <data-source-name>CONFIG_DB</data-source-name>
              <database-vendor
                   name="SAPDB"/>
         </db-properties>
         <entity-beans>
              <entity-bean>
                   <ejb-name>StudentBean</ejb-name>
                   <table-name>TMP_STUDENTNEW</table-name>
                   <field-map
                        key-type="PrimaryKey">
                        <field-name>studentId</field-name>
                        <column>
                             <column-name>STUDENTID</column-name>
                        </column>
                   </field-map>
                   <field-map
                        key-type="NoKey">
                        <field-name>lname</field-name>
                        <column>
                             <column-name>LNAME</column-name>
                        </column>
                   </field-map>
                   <field-map
                        key-type="NoKey">
                        <field-name>standard</field-name>
                        <column>
                             <column-name>STANDARD</column-name>
                        </column>
                   </field-map>
                   <field-map
                        key-type="NoKey">
                        <field-name>fyear</field-name>
                        <column>
                             <column-name>FYEAR</column-name>
                        </column>
                   </field-map>
                   <field-map
                        key-type="NoKey">
                        <field-name>fname</field-name>
                        <column>
                             <column-name>FNAME</column-name>
                        </column>
                   </field-map>
              </entity-bean>
         </entity-beans>
         <relationships/>
    </persistent-ejb-map>
    StudentBean.java
    package com.bcone.ejb;
    import javax.ejb.EntityBean;
    import javax.ejb.EntityContext;
    import javax.ejb.RemoveException;
    import javax.ejb.CreateException;
    @abstractSchemaName StudentBean
    @cmpVersion 2.x
    @ejbHome <{com.bcone.ejb.StudentHome}>
    @ejbPrimaryKey <{java.lang.String}>
    @ejbRemote <{com.bcone.ejb.Student}>
    @hasSimplePK true
    public abstract class StudentBean implements EntityBean {
         public void ejbLoad() {
         public void ejbStore() {
         public void ejbRemove() throws RemoveException {
         public void ejbActivate() {
         public void ejbPassivate() {
         public void setEntityContext(EntityContext context) {
              myContext = context;
         public void unsetEntityContext() {
              myContext = null;
         private EntityContext myContext;
    @primKeyField
         public abstract String getStudentId();
         public abstract void setStudentId(String studentId);
         public abstract String getLname();
         public abstract void setLname(String lname);
         public abstract String getFname();
         public abstract void setFname(String fname);
         public abstract String getStandard();
         public abstract void setStandard(String standard);
         public abstract String getFyear();
         public abstract void setFyear(String fyear);
    Create Method.
         public String ejbCreate(
              String studentId,
              String fname,
              String lname,
              String standard,
              String fyear)
              throws CreateException {
              setStudentId(studentId);
              setFname(fname);
              setLname(lname);
              setStandard(standard);
              setFyear(fyear);
              return null;
    Post Create Method.
         public void ejbPostCreate(
              String studentId,
              String fname,
              String lname,
              String standard,
              String fyear) {
              // TODO : Implement
    StudentData.java
    Created on Nov 14, 2004
    To change the template for this generated file go to
    Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
    package com.bcone.data;
    @author Administrator
    To change the template for this generated type comment go to
    Window&gt;Preferences&gt;Java&gt;Code Generation&gt;Code and Comments
    public class StudentData {
         private String studentId;
         private String fname;
         private String lname;
         private String standard;
         private String fyear;
    @return
         public String getFname() {
              return fname;
    @return
         public String getFyear() {
              return fyear;
    @return
         public String getLname() {
              return lname;
    @return
         public String getStandard() {
              return standard;
    @return
         public String getStudentId() {
              return studentId;
    @param string
         public void setFname(String string) {
              fname = string;
    @param string
         public void setFyear(String string) {
              fyear = string;
    @param string
         public void setLname(String string) {
              lname = string;
    @param string
         public void setStandard(String string) {
              standard = string;
    @param string
         public void setStudentId(String string) {
              studentId = string;
    student.jsp
    <%@ page language="java" %>
    <html>
         <head>
              <title>
                   Title
              </title>
         </head>
         <body>
              <form method="POST" action="WEBBOT-SELF" name="Student" onSubmit="">
      <!--webbot bot="SaveResults" startspan U-File="_private/form_results.txt"
      S-Format="TEXT/CSV" S-Label-Fields="TRUE" ><input TYPE="hidden" NAME="VTI-GROUP" VALUE="0"><!webbot
      bot="SaveResults" endspan -->
      <br>
      <a href="/student/manageStudent.jsp?action=add" method="post"> Create </a>   
      <a href="/student/manageStudent.jsp?action=modify" method="post"> Modify </a>   
      <a href="/student/manageStudent.jsp?action=delete" method="post"> Delete </a>
      <br><br>
      <table border="1" width="32%">
        <tr>
          <td width="39%">Student ID </td>
          <td width="61%"><input type="text" name="studentId" size="20"></td>
        </tr>
        <tr>
          <td width="39%">First Name</td>
          <td width="61%"><input type="text" name="fname" size="20"></td>
        </tr>
        <tr>
          <td width="39%">Last Name</td>
          <td width="61%"><input type="text" name="lname" size="20"></td>
        </tr>
        <tr>
          <td width="39%">Standard</td>
          <td width="61%"><input type="text" name="standard" size="20"></td>
        </tr>
        <tr>
          <td width="39%">Fiscal Year</td>
          <td width="61%"><input type="text" name="fyear" size="20"></td>
        </tr>
        <tr>
          <td width="39%" align="center"><input type="submit" value="Submit" name="submit"></td>
          <td width="61%" align="center"><input type="reset" value="Reset" name="reset"></td>
        </tr>
      </table>
    </form>
         </body>
    </html>
    mamageStudent.jsp
    <%@ page language="java"
    import="javax.naming.,java.sql.,javax.sql,com.bcone.ejb."
    %>
    <html>
         <head>
              <title>
                   Manage Student
              </title>
         </head>
         <body>
              <h1>
              </h1>
    <jsp:useBean id="stu" class="com.bcone.data.StudentData" ></jsp:useBean>
    <jsp:setProperty name="stu" property="*" />
    <%
    try {
         InitialContext ctx = new InitialContext();
         StudentHome home = (StudentHome) ctx.lookup("java:comp/env/StudentBean");
         String str = request.getParameter("action");
         if("action".equals(str)) {
              Student rem = home.create(remote.setFname(stu.getStudentId(),stu.getFname(),stu.getLname(),stu.getStandard(),stu.getFyear());
              out.println(stu.getStudentId() + "Student Created");
         } else if ("modify".equals(str)) {
              Student remote  = home.findByPrimaryKey(stu.getStudentId());
              remote.setFname(stu.getFname());
              remote.setFname(stu.getLname());
              remote.setFname(stu.getStandard());
              remote.setFname(stu.getFyear());
              out.println(stu.getStudentId() + "Student modified");
         } else if ("delete".equals(str)) {
              Student stu1  = home.findByPrimaryKey(stu.getStudentId());
              stu1.remove();
              out.println(stu.getStudentId() + "Student deleted");
    } catch (Exception e) {
         out.println("Exception e"+e.toString());
    %>
         </body>
    </html>
    Regards,
    Vivek Ojha

  • CMP entity beans from tables in 9.0.3 jdev preview

    I am trying to generate CMP entity beans from oracle tables using 9.0.3 jdeveloper preview. My oracle db version is 9.2. I notice that if a table has a single column primary key, no xxxPK.java file is created. However, if the primary key is multi-column an xxxPK.java file is created. Is this correct behavior? I expected an xxxPK.java file to be created regardless of the number of columns in the primary key for the table. Has anyone else noticed this? I am new to EJB so forgive my ignorance.

    Comparing to JDev 902, I think this is a much better decision. Having to change beans with a single field PK to not using a custon PK class, to avoid using that class was a pain in JDev 902. There4s little benefit in using a custom class when there4s only a single field in it... some will say that it prevents having to do majot changes to your code if the PK changes in the future and add another field. But a careful database design will void this almost completely. So having JDev 903 use a java native class is a better option in this situation. At least from my personal point of view.

  • Deploying CMP Entity Beans in Weblogic

    How to generate/convert the Orion xml file to Weblogic_RDBMS ?
    Thx

    petstore 1.3 will be available for the upcoming beta of weblogic 7.0...
    Andrew Sliwkowski(BEA)
    [email protected]
    "Nitin Sawant" <[email protected]> wrote in message
    news:3c04f6cd$[email protected]..
    >
    Appreciate if you can share your plans on releasing a petstore 1.3 patchfor weblogic.
    >
    >
    i am having problems deploying CMP Entity Beans in petstore 1.3 where theprimary
    key class is defined as java.lang.Object in the ejb-jar.xml descriptor(<prim-key-class>java.lang.Object</prim-key-class>).
    Does weblogic 6.1 with 1.3 features enabled support the above feature.
    Thanks,

  • Help about Date and Time by CMP entity bean

    I should have two fields in my cmp .one stores current date ,another one stores current time while ejbcreate();
    I should be able to get findmethod findobjectBetween ?! and ?2
    or that sorts of find method.what type of the method should I use.
    java.util.Date or Simply String?
    if I use java.tuil.Date as the type.
    How shoud my ejbcreate method look like?
    public abstract void setDate(Date mydate);
    public abstract Date getDate();
    ejbCreate(String name,String password,Date mydate,Date mytime)
    setDate()
    I suppose I use write a business method getCurrentDate() which uses
    java.util.Date().toLocale,But I think it just returns String
    help pls.

    I am using oc4j(Oracle9iAS (9.0.3.0.0))
    I am getting the following error using Timestamp while deploying cmp entity bean ejb1.1. Thanks...
    Auto-deploying TimestampTestEntity.jar (No previous deployment found)... TimestampTest_EntityBeanWrapper0.java:1558: Missing term.
    if (if(thread.contextContainer != null)
    ^
    TimestampTest_EntityBeanWrapper0.java:1558: ')' expected.
    if (if(thread.contextContainer != null)
    ^
    TimestampTest_EntityBeanWrapper0.java:1559: Invalid expression statement.
    response != null) {if(thread.contextContainer != null)
             ^
    TimestampTest_EntityBeanWrapper0.java:1559: ';' expected.
    response != null) {if(thread.contextContainer != null)
                    ^
    TimestampTest_EntityBeanWrapper0.java:1560: Missing term.
    response.setNanos(if(thread.contextContainer != null)
                      ^
    TimestampTest_EntityBeanWrapper0.java:1560: ')' expected.
    response.setNanos(if(thread.contextContainer != null)
                      ^
    TimestampTest_EntityBeanWrapper0.java:1561: ';' expected.
    response.getNanos());} // generated from BeanMethodCompilation
    ^
    7 errors
    Error compiling F:\oc4j\j2ee\home\applications\TimestampAppl/TimestampTestEntity.jar: Syntax error in source
    Oracle9iAS (9.0.3.0.0) Containers for J2EE initialized

  • Do I must include orion-ejb-jar.xml in my CMP entity bean?

    Deal all:
    I've had a problem about deployment of my CMP entity bean.
    I don't know if I need to include orion-ejb-jar.xml in the jar
    file? Could anyone tell me what files I should include them in
    jar file and what config file(like data-sources.xml) I should
    modify them?
    Thanks!!

    The orion-ejb-jar.xml is not necessary...oc4j/orion auto-
    generates this configuration file when the application is
    deployed. You would only need this file if you are using o-r
    mapping, or changing some deployment time option with your ejb.
    The config/data-sources.xml file is used by the container. If
    you are using oracle, you will need to use the data-sources.xml
    for your database (the path needs the proper database name, and
    server host, and you will need to put in the password and
    username). Use the example with the oc4j docs to help you, or
    the one already in your config directory.
    regards,
    the elephantwalker
    www.elephantwalker.com

  • How to use same transaction when calling CMP entity beans and  DAO (JDBC)

    We are currently using Weblogic 8.1 SP2 with an Oracle 10g database (using XA thin and non-XA drivers).
    We have a session bean that invokes an entity bean and a DAO (data access object pattern) in order to add data in 2 separate tables (account and history). Rows are added to the first (account) table using a CMP Entity bean while inserts are done in the 2nd (history) table using a DAO. Here is some pseudo code:
    addHistorySessionBean (trans-attribute="Required")
    begin
    Step #1 - call addAccountEntityBean (trans- attribute="Required")
    Step #2 - call addHistoryDAO (get datasource, connection)
    end
    The 2nd table (history) has a foreign key constraint to ensure that the corresponding key exists in the first (account) table. Unfortunately, DAO inserts on the 2nd (history) table fail with a foreign key constraint violation (INTEGRITY CONSTRAINT VIOLATION - PARENT KEY NOT FOUND!) since they cannot see the row added to the 1st (account) table in step #1 by the CMP entity bean.
    How does one ensure that all this is done in a single transaction ? It appears that the app server creates two seperate transactions (one for the session bean facade and the entity bean and a 2nd transaction (when we retrieve a connection using the same data source JNDI name) for the DAO.
    A post on server side suggested using a "<resource-ref>" in the session bean to tie the two potentially separate transactions together, but that does not work for us. However, I am not sure if we are doing that correctly. After we define the resource ref in the session facade bean, do we use the resource ref "name" attribute to lookup the datasource or do we still lookup the datasource by JNDI name ? Do we need to define the resource-ref tag in the entity bean also ?
    Does Weblogic allow using a single transaction for this type of a scenario ? How does one specify within Weblogic that the same transaction should be utilized by the entity bean and any subsequent DAOs?
    People have also suggested that we defer constraint checking until the transaction(s) are committed but that sounds like a work acount without addressing this issue. Would postponing the constraint checking in Oracle cause any additional overhead ?
    Any suggestions with specific examples or documentation on how to address this issue will be gratefully appreciated.

    Thanks for your suggestion. Unfortunately, this does not work since it appears that there are 2 separate transactions going on here. One, the original one initiated by the session bean and used by the entity bean and the other initiated by the DAO. Any other ideas appreciated.
    Hi,
    Try setting the delay-database-inserts tag to
    ejbCreate in RDBMS descriptor file.
    http://bernal/stage/wls/docs81/ejb/DDreference-cmp-jar
    .html#1113981
    vasanthi ramesh

  • How to load the existing data from the databse in the CMP entity bean?

    hello
    my problem is as follows--
    i am creating a CMP entity bean.in these beans client create the data instances using create() function.
    now a entity bean will be created for the newly created data and it's EJBObject will also be formed.
    now we will be able to perform finder methods over them.
    remember these data has been newly created in the database.
    but now if i want to perform the finder methods on the
    existing data in the database( i don't need to use create() fn as i am not "creating" the data.). how will i perform the query over the existing data.
    basically i have to make a CMP bean to extract the data corresponding to a particular condition , from the database table. i don't want to create the data in the database but just find out what data satisfies my condition.
    thanking you
    Prashant

    you have to use findByXXX methods. depending on your appserver you may have to declare them (and eventually the query you want to be used) in the vendor specific deploiement descriptor.
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