Remote Database connection

Question

hi all
i am using
mysql-connector-java-3.0.16-ga-bin.jar
to connect to mysql 4.0.18
the scenario is like this
the application connects to some 20 databases(mysql 4.0.18) which are available at 20
database servers one by one. i mean to say that this is not a multi-threaded application.
In this driver = com.mysql.jdbc.Driver
dcsIP = variable for 20 database
remote_db, remote_username and remote password are also variables
Class.forName(ResourceLoader.getString("driver"));               
DriverManager.setLoginTimeout(60);
connection =
DriverManager.getConnection("jdbc:mysql://"+dcsIP+"/"+ResourceLoader.getString("remote_
db"),ResourceLoader.getString("remote_username"),ResourceLoader.getString("remote_pass
word"));
statement = connection.createStatement();
statement.setQueryTimeout(60);
Using the above code i am able to get information from 20 database's and if at all there is
no mysql service running at the given dcsIP, i am getting exception and that is declared as
no connection.
But the actual problem is, for one server( identified the IP say XXX.XXX.X.XXX) among these
20, the application is loosing the control ie not even an exception is thrown. What might be
the reason.
For one thing i am sure is not the memory inconsistencies as the application is running fine
with 25 servers even ( excluding the server at XXX.XXX.X.XXX);
As this system is running continouly, if i restart the system i am able to get the connection
for XXX.XXX.X.XXX, but again after 3 to 4 days, not getting any response and the
application is getting blocked.
Kindly send me ur suggestions

Answer 1

Sounds like a network problem to me. Probably nothing to do with JDBC. Have you considered asking your network people to look at the problem?