How to use the Oracle 10g JDBC OCI driver in JBoss ?

Question

Greetings,
I deployed ojdbc14.jar in JBoss and I created an Oracle datasource. I have the following questions:
1. In the datasource descriptor file I have:
<connection-url>jdbc:oracle:oci:@(description=(address=(host=localhost)(protocol=tcp)(port=1521))(connect_data=(SERVICE_NAME=xe)))</connection-url>
<driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
Is it enough in order to use the Oracle 10g JDBC OCI driver ?
2. After having looked-up the datasource and created a connection, the classe of these objects are org.jboss.resource.adapter.jdbc.WrapperDataSource and, respectivelly, org.jboss.resource.adapter.jdbc.WrappedConnection. How can I have access to oracle.jdbc.oci and oracle.jdbc.pool packages ?
Many thanks in advance,
Nicolas

Answer 1

Hello
We were banging our heads on a similar thing, maybe this will help
We needed to convert the wrapped connection to an OracleConnection so that we could do a proxy switch, but maybe you could apply it to your situation anyway
1-you have to convert the Connection object to an OracleConnection in order to use the method that does the proxy switch
The method to do this is getInnermostDelegate()
Once you call this method, you get a new Connection object that can be cast to an OracleConnection object
See below for the snippet of code
// now switch the user and reselect
if (conn instanceof DelegatingConnection) {
properties.put("PROXY_USER_NAME","peter/peter");
oraConn =((DelegatingConnection)conn).getInnermostDelegate();
if (oraConn == null)
out.println("oraConn is null\n");
((OracleConnection)oraConn).openProxySession(OracleConnection.PROXYTYPE_USER_NAME,properties);
2-you have to put a setting in the xml file in conf/Catalina/localhost that allows you to call the getInnermostDelegate() method
By default, Tomcat does not allow you to call this method, it will always return null
You have to change the xml to allow it to return an object
It seems that WebSphere and Tomcat both frown on vendor-specific methods that do not comply with the JDBC standards, but do allow it
Here is the setting:
<parameter>
<!-- NOTE: This is necessary to enable access to the Oracle connection object -->
<name>accessToUnderlyingConnectionAllowed</name>
<value>true</value>
</parameter>
Note, this setting was also put in the conf/server.xml file
Thanks
Peter