Close physical connection failed!

Question

Hi!
I meet a problem in a live system using Oracle 8.1.7, i.e., the physical connection cann't be closed normally in some unknown occasion. I don't know the reason and how
to solve the problem.
I show some code of my PooledConnection class here:
// get physical connection here
Connection conn = DriverManager.getConnection(url, username, password);
Connection getConnection()
return conn;
// close physical connection here
try {
closeStatements(); // I close the statement recorded in PooledConnection object
} catch (SQLException e) {
e.printStackTrace();
try {
getConnection().rollback();
// My problem is located here!!
// I've had problems when trying to close a connection.
// The following close() method may be no response for a long time.
getConnection().close();
catch (SQLException e) {
e.printStackTrace();
catch (Exception e) {
e.printStackTrace();
Help me please!
Thanks a lot!
Meyor

Answer 1

Make sure you have closed all statements for that connection.
If there is any statement still running in the database, you can't close connection.
If you use transation, and didn't explicitly call commit() or rollback(), closing connection will automatically commit your transactions. Unless you transation has lots of changes, it shouldn't take long.