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From Jack Wang <>
Subject Re: XADataSource error in tomcat 5.5 with MySQL 5.1
Date Thu, 09 Feb 2006 02:11:51 GMT
--- lichtner <>写道:
> Does this version of Connector/J actually support XA? A few months ago I
> remember that it was in alpha, and it was broken. Does the latest release
> of the driver support XA?

--- "Christopher G. Stach II" <>写道:
> Jack Wang wrote:
> > I can get connect from Resource configured in tomcat with type="javax.sql.DataSource".
But the
> > project needs the XADataSource, so I configure the XADataSource in tomcat's server.xml
> You need to use mysql-connector-java-5.0.0-beta's
> com.mysql.jdbc.jdbc2.optional.MysqlXADataSource with a MySQL 5.0 server,
> or the far less desirable XAPool for fake XA.

I have used mysql-connector-java-5.0.0-beta, but I still have the null XADataSource xaDs from
java action.
Here is the server.xml in tomcat:

<Resource name="jdbc/myXADB" auth="Container" 

And the is my action:

Context ctx = new InitialContext();
XADataSource xaDs = (XADataSource)ctx.lookup("java:comp/env/jdbc/myXADB");
// Here get the null xaDs, Oops !!

My environment is :
 JDK 1.5
 Tomcat 5.5
 MySQL: 5.0.18-win32
 Connector/J 5.0 beta

I have checked mysql-connector-java-5.0.0-beta changes. The 11-04-05 - Version 5.0.0-beta
- XADataSource implemented (ported from 3.2 branch which won't be 
  released as a product). 
  Use "com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" as your datasource
  class name in your application server to utilize XA transactions
  in MySQL-5.0.10 and newer.

So, what's the wrong ? Please help. Thanks.

Wang Jun



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