Failed to Generate Wrapper Class exception while connecting to access database.

Question

i tried to connect to access database in windows. i made a user dsn in windows
control panel and added this to the connection pool. after which i created a JDBC
datasource using this connection pool.(specifying the driver as sun.jdbc.odbc.JdbcOdbcDriver
and url=jdbc:odbc:xyz
where xyz is the user dsn name pointing to the relevant access database file.
on testing this in the weblogic admin console it showed successful operation.
when i tried to use this connection pool in weblogic 8.1 workshop and tried
building a rowset control to check the connectivity it gave the following exception.
file attached.
any hints on how to get it working/ how to use access database with wl 8.1
workshop.
Exception in context_onAcquire
java.sql.SQLException: Failed to Generate Wrapper Class.
Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141)
[DB-error.txt]

Answer 1

ashok wrote:
i tried to connect to access database in windows. i made a user dsn in windows
control panel and added this to the connection pool. after which i created a JDBC
datasource using this connection pool.(specifying the driver as sun.jdbc.odbc.JdbcOdbcDriver
and url=jdbc:odbc:xyz
where xyz is the user dsn name pointing to the relevant access database file.
on testing this in the weblogic admin console it showed successful operation.
when i tried to use this connection pool in weblogic 8.1 workshop and tried
building a rowset control to check the connectivity it gave the following exception.
file attached.
any hints on how to get it working/ how to use access database with wl 8.1
workshop.
Exception in context_onAcquire
java.sql.SQLException: Failed to Generate Wrapper Class.
Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141)
Hi Askok. This exception usually means that the weblogic server's environment
doesn't have all it needs to make the jdbc connection you want. You should
ensure that the OS environment variable PATH has all the libraries you need
for making a jdbc-odbc connection, and that it's classpath also contains the
driver you want.
What DBMS are you connecting to? The reason I ask is because if there is a
pure JDBC driver for it, that will be preferable, because the jdbc-odbc bridge
from Sun is not threadsafe, so it can corrupt Weblogic.
Joe
>
Exception in context_onAcquire
java.sql.SQLException: Failed to Generate Wrapper Class.
Nested Exception: java.lang.RuntimeException: Failed to Generate Wrapper Class
at weblogic.utils.wrapper.WrapperFactory.createWrapper(WrapperFactory.java:141)
at weblogic.jdbc.wrapper.JDBCWrapperFactory.getWrapper(JDBCWrapperFactory.java:73)
at weblogic.jdbc.jts.Driver.newConnection(Driver.java:674)
at weblogic.jdbc.jts.Driver.createLocalConnection(Driver.java:196)
at weblogic.jdbc.jts.Driver.connect(Driver.java:154)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:298)
at com.bea.wlw.runtime.core.control.DatabaseControlImpl.getConnection(DatabaseControlImpl.jcs:1360)
at com.bea.wlw.runtime.core.control.DatabaseControlImpl.context_onAcquire(DatabaseControlImpl.jcs:1252)
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:324)
at com.bea.wlw.runtime.core.dispatcher.DispMethod.invoke(DispMethod.java:353)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:420)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:393)
at com.bea.wlw.runtime.core.container.Invocable.fireEvent(Invocable.java:603)
at com.bea.wlw.runtime.core.context.WlwThreadContext.sendEvent(WlwThreadContext.java:989)
at com.bea.wlw.runtime.core.context.WlwThreadContext.raiseEvent(WlwThreadContext.java:919)
at com.bea.wlw.runtime.core.container.Container.raiseContextEvent(Container.java:553)
at com.bea.wlw.runtime.jcs.container.JcsContainer.onAcquire(JcsContainer.java:513)
at sun.reflect.GeneratedMethodAccessor325.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.bea.wlw.runtime.core.dispatcher.DispMethod.invoke(DispMethod.java:353)
at com.bea.wlw.runtime.core.container.Invocable.invoke(Invocable.java:420)
at com.bea.wlw.runtime.core.container.Invocable.sendContextEvent(Invocable.java:524)
at com.bea.wlw.runtime.jcs.container.JcsContainer.sendContextEvent(JcsContainer.java:464)
at com.bea.wlw.runtime.core.context.WlwThreadContext.acquireResources(WlwThreadContext.java:676)
at com.bea.wlw.runtime.jcs.container.JcsProxy.invoke(JcsProxy.java:307)
at processes.Audit.insertAuditData(Audit.ctrl)
at processes.ExceptionHandler.auditInsertAuditData(ExceptionHandler.jpd:78)