How do the Entity Bean in SUN J2EE1.3 Connect to Oracle Database9i

Question

I can connect to Database in my applications with codes:
Connection conn = DriverManager.getConnection(
"jdbc:oracle:thin:@172.28.200.43:1521:s
hcd",
"system", "manager");
Statement stmt = conn.createStatement();
But I can not connect to DB in my EJB, I have config J2EE1.3
Server and my EJB
1.in EJB,the code is:
InitialContext ic = new InitialContext();
DataSource ds = (DataSource) ic.lookup(dbName);
con = ds.getConnection();
2.When I assemble the EJB, I set Resource Refs for JNDI and fill
user name, password
3. modify the config/resource.propertities
jdbcDataSource.5.name=jdbc/ora/test
jdbcDataSource.5.url=jdbc:oracle:thin:@172.28.200.43:1521:shcd;cr
eate=true
when I use cloudscape, it runs OK(with JNDI jdbc/Cloudscape),
but after i change to use Oracle , the EJB return a Exception:
Caught an exception.
java.rmi.ServerException: RemoteException occurred in server
thread; nested exce
ption is:
java.rmi.RemoteException: nested exception is:
javax.ejb.EJBException: U
nable to connect to database. Io Exception: Connection refused
(DESCRIPTION=(TMP=)(VSN
NUM=150999297)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)
(EMFI=4)))); nested exc
eption is:
javax.ejb.EJBException: Unable to connect to database.
Io Exception: Connecti
on refused(DESCRIPTION=(TMP=)(VSNNUM=150999297)(ERR=12505)
(ERROR_STACK=(ERROR=(C
ODE=12505)(EMFI=4))))
java.rmi.RemoteException: nested exception is:
javax.ejb.EJBException: Unable to
connect to database. Io Exception: Connection refused
(DESCRIPTION=(TMP=)(VSNNUM=1509
99297)(ERR=12505)(ERROR_STACK=(ERROR=(CODE=12505)(EMFI=4))));
nested exception i
s:
javax.ejb.EJBException: Unable to connect to database.
Io Exception: Connecti
on refused(DESCRIPTION=(TMP=)(VSNNUM=150999297)(ERR=12505)
(ERROR_STACK=(ERROR=(C
ODE=12505)(EMFI=4))))
javax.ejb.EJBException: Unable to connect to database. Io
Exception: Connection refus
ed(DESCRIPTION=(TMP=)(VSNNUM=150999297)(ERR=12505)(ERROR_STACK=
(ERROR=(CODE=1250
5)(EMFI=4))))
<<no stack trace available>>

Answer 1

Hi,
Just run the db_setup.sh script located in the bin directory of ias
If you just give the Oracle Home directory the libraries will be found.
Register a Datasource pointing to the service you defined in tnsnames.ora
Cheers, Robert
Malay Biswas wrote:
Hi,
How can I configure native and third party database drivers for
connecting to Oracle. The oracle client is set up. Also, which one is
advisable to work with, third party or native? I am using iAS EE 6.0
Test Drive on Solaris 8.0. Also I am not sure what should be the
Client library file in this case for ORACL_OCI driver.
I am trying to run a Entity bean which gives null pointer error while
doing home.create() or home.findByPrimaryKey, and I don't know what's
the problem, but my guess is it cannot find or instantiate the object
since it cannot connect to the proper database.
Could anybody help me with it?
Thanks
Malay
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