Datasources connection questions

Question

hi all
my question is about How the connections stored in a Jndi server datasource pool are managed.
For example, I'm developing a J2EE application with Ejbs and Datasources, etc. I saw that when I want to retrieve a connection from datasource to work on it I need do something like this:
For example to retrieve a datasource connection:
Hashtable jndiProps = new Hashtable();
jndiProps.put(Context.INITIAL_CONTEXT_FACTORY,...);
jndiProps.put(Context.PROVIDER_URL, ...);
Context context = new InitialContext(jndiProps);
DataSource ds = (DataSource) context.lookup("jdbc/MyDatasource");
Connection con = ds.getConnection();
...I know in this case that the server manages a datasource connection pool, etc
My question is when a get a connection from the Datasource pool of my app server. do I need to release the connection with some special method when I finish with it (in order to return it to the pool) or it doesn't matter ?
thanks in advance

Answer 1

If I have three prepared statements right in a row with nothing in between should I close the connection after each one and then get it again?
Seems like I would be just as well off to just get the conn once do the 3 things then close it.
and in spots I might actually be doing something as i step through the first result set so can i use conn.preparedStatement() in the loop many times without getting the connection and closing each time through the loop?
i of course close all PS and RS and use diff PS2 and RS2 in the loop so i 'm just talking about keeping the conn open while (RS.next()) and use it multiple times to conn.preparedStatement() inside the loop?
or should i use 2 connections lol and open conn1 and then in loop use conn2 and close it each time around the loop and then close conn1 when i exit the loop?