Connection was unexpectedly dropped??

Question

Hi there,
Can anyone PLEASE HELP ME 8) I am running the code below where I am connected to AS/400. But every so often when I attempt to execute the query I get an error saying the connection was unexpectedly dropped. I have no idea as to why this happens. It only happens sometimes??
select = connection.createStatement();
try
resultSet = select.executeQuery(command); //where command is the SQL select statement.
//catch(com.ibm.as400.access.ConnectionDroppedException e)
catch(SQLException e)
System.out.println(e.getMessage());
Any help will be extremely appreciated 8)

Answer 1

Cross posting is not popular but atleast u got the right forum this time ;-) http://forum.java.sun.com/thread.jsp?forum=31&thread=315488
Connections usually get dropped after a period of inactivity.
One option is to check for a closed connection before every qwery: e.g.
if( connection.isClosed() )
  connection = DriverManager.getConnection( "url", "user", "pass" );
select = connection.createStatement();
...the other option is to use a connection pool as i suggested in my answer to your cross-post.
p.s. you should declare statments / resultsets locally and close them in finally blocks otherwise you will have some some serious row / table locking problems.