Problem : can't close a database connection

Question

Hi,
I'am using connection pool under weblogic 6 and I can't close the connection when a SQL exception occures.
The connection always stay alive, even after a while, so when all connection have failed, I must restart the server.
Thanks for any kind of help.
Aurelien
Here my code :
public class MyDBClass {
     private ResultSet rs;
     private String query;
     private Connection conn;
     private PreparedStatement instruction;
     private WeblogicPool weblogicPool;
     public MyDBClass() {
     public boolean myDBMethod() {
          String data = ...
          long idTable = ...
          try {
               rs = null;
               instruction = null;
               weblogicPool = new WeblogicPool();
               conn = weblogicPool.getConn();
               query="insert into mytable (ID_TABLE, DATA) values (?,?)";
               instruction= conn.prepareStatement(query);
               instruction.setLong(1, idTable);
               instruction.setString(2, data);
               rs = instruction.executeQuery();
               rs.close();
               instruction.close();
               conn.close();
          catch (Exception e1) {
               e1.printStackTrace();
               try{
                    rs.close();
                    instruction.close();
                    conn.rollback();
                    conn.close();
               } catch (Exception e2){}
}The method getConn of WeblogicPool just returns a valid connection the the database

Answer 1

I've find an answer to my problem !
Statement (or PreparedStatement) and ResultSet objects must be declared into the try.
I don't know why it's working in this case ?!?
(Here, a best way to do the same as my first message)
public class MyDBClass {
     public MyDBClass() {
     public boolean myDBMethod() {
          Connection conn;
          WeblogicPool weblogicPool;
          String data = ...
          long idTable = ...
          try {
               weblogicPool = new WeblogicPool();
               conn = weblogicPool.getConn();
               PreparedStatement instruction = conn.prepareStatement("insert into mytable (ID_TABLE, DATA) values (?,?)");
               instruction.setLong(1, idTable);
               instruction.setString(2, data);
               ResultSet rs = instruction.executeQuery();
               rs.close();
               instruction.close();
               conn.close();
          catch (Exception e1) {
               e1.printStackTrace();
               try {
                    conn.rollback();
                    conn.close();
               } catch (Exception e2){}
          finally {
               if(con != null)
                    con.close();
}Thank's for your help !