Completely Random SQLException: Closed Connection: next

Question

I don't have the code in front of me right now, but I can give you a break down.
Class DbConnection{
Protected Connection dbcon;
public void setDbConnection(DbConnection db){
public void getDbConnection(){
return dbcon;
public void close(){
dbcon.close()
Class Servlet Extends HttpServlet Implements SingleThreadModel{
protected DbConnection dbcon;
public void startConnection(DbConnection){
dbcon.setDbConnection(DbConnection.getDbConnection());
Class SubServlet extends Servlet{
public void doGet(){
startConnection(dbCon);
try{
do some sort of query or execute a stored procedure
}finally{
dbCon.close()
This is kinda the jist of what the servlet is going. All connections are closed in a Try Finally block and the connections are opened right before the try finally block. The problem is that it works for the most part. But once in a while, there would be a closed connection problem whether executing a query or a stored procedure. It would read several rows from the resultset before the closed connection. Or while it's about to execute a stored procedure, it will have that db connection, up until it is about to execute the sp. Since I've implemented the singlethreadmodel, is it really still threadsafe? The connection is to a huge db, but I've written a program to connect, query (large query), disconnect a thousand times to just test the connections. So far, seems like it's my code. Please, any help would be great, throw out ideas and I'll test them. So far I've exhausted every idea I've had so far.

Answer 1

Hi,
Did you ever solve this problem ?
Please share what you did ?
Thanks.