Remote MYSQL Database Access

I have developed an application in java that access remote mysql database. Wh开发者_如何转开发ile I am running it by netbeans IDE of system which have running that wamp server. But while i try I make connection in another system to remote system database by netbeans it shows following error.

Unable to add connection, Cannot establish a connection to jdbc:mysql://192.168.1.14:3306/test using(CommunicationsException: Communications link failure

Last packet sent to the server was 0 ms ago.

Please, kindly help me.

Thanks in Advance

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From mysql forums

You could be getting this because (1) the URL of the DB is wrong, because (2) the DB isn't set up to accept connections from the web host, or because (3) some intermediate networking component is misconfigured. (1) is your problem; (2) and (3) might be your problem or the web hosting's problem, depending on where the DB is located, what administrative privileges on the DB that you have, and how the networking is set up.

You need to have the right privileges to be able to connect to MySQL remotely. There are several tools available to set it up.

Here is an article outlining several steps of which the grant step is most commonly needed.

mysql> GRANT ALL ON foo.* TO bar@'202.54.10.20' IDENTIFIED BY 'PASSWORD';

There has also been problems reported when connecting to MySQL databases in Windows Vista, but i'm not sure wether this is relevant to this case or not.

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Do you have ssh access to the server? I would have run a tunnel with ssh, plink or putty (ssh -L 3305:127.0.0.1:3306 192.168.1.14) and then use this connection url

jdbc:mysql://127.0.0.1:3305/test

It would be easier to assist if we'd known your operating system.

If this is a deployment situation, opening the firewall for port 3306 from your IP address is probably the right thing. In linux you might find the settings in /etc/sysconfig/iptables, but your sysadmin may have other safe guards in place. You must also verify that mysql is actually listening on the IP-address, and not only localhost.

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MySQL is standard protected so you can't access it remotely. You'll have to grant MySQL as well as the user connecting to MySQL access from outside the MySQL-machine.

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Perhaps a low-level network issue.

Can you ping that IP ? Can you telnet to that IP/port ?

e.g. telnet 192.168.1.14 3306

Establishing whether you can talk to the machine and whether you can create a basic TCP connection to the MySQL process on that machine will tell you a lot - is your network sound, is a process listening on that port etc.