How to retrive data through stored procedure in mysql from remote machine?

Hello everybody,
I am having problem in accessing data of mysql through stored procedure. It works fine if I use "jdbc:mysql://localhost:3306/[database name]" instead of "jdbc:mysql://[IP address]:3306/[database name]". The connection is fine for both, but when stored procedure is called the system stops at "stmt.execute();" line in java file while debuging. In case of localhost there is no any problem. The code for connecting procedure is:
stmt = dbConn.prepareCall("{? = call testing()}"); stmt.registerOutParameter(1, Types.VARCHAR); stmt.execute();
I have to connect java application running in Windows to the mysql database running in remote machine(RHEL 5).
I am using "mysql-connector-java-5.1.5-bin.jar", jdk 1.5.0 and remote database Mysql version : 5.0.22.
There is no exception and application hangs at stmt.execute();
Can anybody help me with this problem?
Thank you.

I got it. its about connection...

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How to retrive data through stored procedure in mysql from remote machine?

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