By using this site, you agree to our updated Privacy Policy and our Terms of Use. Manage your Cookies Settings.
444,246 Members | 1,515 Online
Bytes IT Community
+ Ask a Question
Need help? Post your question and get tips & solutions from a community of 444,246 IT Pros & Developers. It's quick & easy.

OracleConnectionPoolDataSource Problem

P: 1
I'm Trying to connect a JSP tomcat-based application to Oracle using
OracleConnectionPoolDataSource and related classes. I have used
javax.sql.DataSource an it did work fine. I have made changes I need for using
that classes and when I get the DataSource it throws exception
"javax.naming.NamingException: Cannot create resource instance".

I'm using Apache Tomcat 5.5.23 for windows, Java JDK 1.5.0_05 and Oracle 9i
Release 2 ( All for windows.

Changes I have made are these:

In context.xml:

<Context path="/test" docBase="test" debug="0"
reloadable="true" >
name="jdbc/test" auth="Container"
type="oracle.jdbc.pool.OracleConnectionPoolDataSou rce"
maxActive="0" maxIdle="-1" maxWait="-1"
removeAbandoned="true" removeAbandonedTimeout="60" logAbandoned="true"
username="test" password="test"
driverClassName="oracle.jdbc.pool.OracleConnection PoolDataSource"
url="jdbc:oracle:thin:@ " />

In web.xml (only resource-ref):

<res-type>oracle.jdbc.pool.OracleConnectionPoolDataSour ce</res-type>

Code that creates connection:

initCtx = new InitialContext();
ctx = (Context) initCtx.lookup("java:/comp/env");
ds = (OracleConnectionPoolDataSource) ctx.lookup("/jdbc/test");
PooledConnection pc = ds.getPooledConnection();
con = pc.getConnection();

I have searched in google and found some examples that use
oracle.jdbc.driver.OracleDriver in driverClassName. I have also tried this
option with the same results. I suppose bug is elsewhere.

I have tried to create DataSource instance in the code instead of get it from
resource. Doing this it drops no error and page works, but I don't know how can
I control maximun number of pooled connections. This is the code I have used for

initCtx = new InitialContext();
OracleConnectionPoolDataSource ds = new OracleConnectionPoolDataSource();
ds.setDataSourceName("oracle.jdbc.pool.OracleConne ctionPoolDataSource");
initCtx.rebind(DS, ds);
pc = ds.getPooledConnection();

But it creates only one connection and doesn't allow two users to log in at the
same time.

Please. I need help.
Jul 18 '07 #1
Share this question for a faster answer!
Share on Google+

Post your reply

Sign in to post your reply or Sign up for a free account.