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Configuring a DataSource on WebSphere 5.1.0

 
Greenhorn
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Hi,
I am using WSAD 5.1.0 and when i tried to explore the JNDI with a simple Servlet, which connects to a MySQL database and displays some records.

After I start the WSAD, the mySQL_DS is binded to jdbc/mySQL_DS, in console :
*******************************************************************
Binding mySQL_DS as jdbc/mySQL_DS
*******************************************************************
*********** servlet code *********************************
InitialContext ctx = new InitialContext();

DataSource ds = (DataSource) ctx.lookup("jdbc/mySQL_DS");
conn = ds.getConnection("root", "fedfed");

stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT * FROM USER");

*********************************************************************
When I access this servlet I get this error:
[11/26/04 18:52:41:761 GMT] 621e2e82 ConnectionFac E J2CA0036E: An exception occurred while invoking method setDataSourceProperties on com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl used by resource jdbc/mySQL_DS : java.lang.reflect.InvocationTargetException: com.ibm.ws.exception.WsException: DSRA8050W: Unable to find the DataStoreHelper class specified:
at com.ibm.ws.rsadapter.exceptions.DataStoreAdapterException.<init>(DataStoreAdapterException.java:244)
at com.ibm.ws.rsadapter.exceptions.DataStoreAdapterException.<init>(DataStoreAdapterException.java:171)
at com.ibm.ws.rsadapter.AdapterUtil.createDataStoreAdapterException(AdapterUtil.java:191)
at com.ibm.ws.rsadapter.DSConfigurationHelper.createDataStoreHelper(DSConfigurationHelper.java:604)
at com.ibm.ws.rsadapter.spi.WSRdbDataSource.<init>(WSRdbDataSource.java:298)
at com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.setDataSourceProperties(WSManagedConnectionFactoryImpl.java:862)
at java.lang.reflect.Method.invoke(Native Method)
at com.ibm.ejs.j2c.ConnectionFactoryBuilderImpl.createMCFandPM(ConnectionFactoryBuilderImpl.java:1451)
at com.ibm.ejs.j2c.ConnectionFactoryBuilderImpl.getObjectInstance(ConnectionFactoryBuilderImpl.java:1188)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:313)
at com.ibm.ws.naming.util.Helpers.processSerializedObjectForLookup(Helpers.java:884)
at com.ibm.ws.naming.jndicos.CNContextImpl.processResolveResults(CNContextImpl.java:1762)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1615)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1525)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.java:1225)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:132)
at javax.naming.InitialContext.lookup(InitialContext.java:359)
at user.CreateUserServlet.f(CreateUserServlet.java:74)
at user.CreateUserServlet.doGet(CreateUserServlet.java:27)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.ws.webcontainer.servlet.StrictServletInstance.doService(StrictServletInstance.java:110)
---- Begin backtrace for nested exception
java.lang.ClassNotFoundException:
at com.ibm.ws.classloader.CompoundClassLoader.findClass(CompoundClassLoader.java:351)
at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:261)
at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
at com.ibm.ws.rsadapter.DSConfigurationHelper$3.run(DSConfigurationHelper.java:941)
at java.security.AccessController.doPrivileged(Native Method)
at com.ibm.ws.rsadapter.DSConfigurationHelper.loadClass(DSConfigurationHelper.java:934)
at com.ibm.ws.rsadapter.DSConfigurationHelper.createDataStoreHelper(DSConfigurationHelper.java:593)
at com.ibm.ws.rsadapter.spi.WSRdbDataSource.<init>(WSRdbDataSource.java:298)
at com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.setDataSourceProperties(WSManagedConnectionFactoryImpl.java:862)
at java.lang.reflect.Method.invoke(Native Method)
at com.ibm.ejs.j2c.ConnectionFactoryBuilderImpl.createMCFandPM(ConnectionFactoryBuilderImpl.java:1451)
at com.ibm.ejs.j2c.ConnectionFactoryBuilderImpl.getObjectInstance(ConnectionFactoryBuilderImpl.java:1188)
at javax.naming.spi.NamingManager.getObjectInstance(NamingManager.java:313)
at com.ibm.ws.naming.util.Helpers.processSerializedObjectForLookup(Helpers.java:884)
at com.ibm.ws.naming.jndicos.CNContextImpl.processResolveResults(CNContextImpl.java:1762)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1615)
at com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.java:1525)
at com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.java:1225)
at com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:132)
at javax.naming.InitialContext.lookup(InitialContext.java:359)
at user.CreateUserServlet.f(CreateUserServlet.java:74)

Need your help on what is causing this.
Thanks and regards,
Tudor
 
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