Hi,
I am using the latest JDBC 5 connector to connect to MySQL. Everything works swimmingly, most of the time !!!.
I wrote my own ConnectionPool.java class that basically creates 20
connections in a queue and manages checkin/ out of JDBC connections by the
application.
...
...
...
connectionQueue = new LinkedBlockingQueue<Connection>(20);
while(connectionQueue.remainingCapacity(...
tempConnection = DriverManager.getConnection(URL,
UserName, Password);
connectionQueue.add(tempConnection);
}
...
checkin()
checkout(Connection c)
...
This works fine most of the time, even under high use/pressure... However...if I leave the program running but idle for an extended
while... where basically it's just in a listening state and none of the
connections are getting taken and they are all residing in the
Pool...whenever a new message arrives and it requires a connection to the DB
i always get error:
mysql.jdbc.exceptions.jdbc4.Communicat... Communication link
failure
A program restart will fix immediately. I'm guessing the idle time is the key here with
the connections somehow dying, getting corrupt, exceeded time to live
etc or something...? but I've no idea how to fix...
All suggestions very welcome
Thanks
I am using the latest JDBC 5 connector to connect to MySQL. Everything works swimmingly, most of the time !!!.
I wrote my own ConnectionPool.java class that basically creates 20
connections in a queue and manages checkin/ out of JDBC connections by the
application.
...
...
...
connectionQueue = new LinkedBlockingQueue<Connection>(20);
while(connectionQueue.remainingCapacity(...
tempConnection = DriverManager.getConnection(URL,
UserName, Password);
connectionQueue.add(tempConnection);
}
...
checkin()
checkout(Connection c)
...
This works fine most of the time, even under high use/pressure... However...if I leave the program running but idle for an extended
while... where basically it's just in a listening state and none of the
connections are getting taken and they are all residing in the
Pool...whenever a new message arrives and it requires a connection to the DB
i always get error:
mysql.jdbc.exceptions.jdbc4.Communicat... Communication link
failure
A program restart will fix immediately. I'm guessing the idle time is the key here with
the connections somehow dying, getting corrupt, exceeded time to live
etc or something...? but I've no idea how to fix...
All suggestions very welcome
Thanks