Develop Reference

Can't connect to remote MySQL server

I'm trying to open a connection from my NetBeans IDE to my remote MySQL database. I've put in what I think is the correct parameters in the response fields but when I try to test the connection it gives me this error message:
Cannot establish a connection to
jdbc:mysql://198.136.54.104:3306/myedigit_FirstDb?zeroDateTimeBehavior=convertToNull
using com.mysql.jdbc.Driver
Communications link failure
The last packet sent successfully to the server was 0 milliseconds
ago. The driver has not received any packets from the server.
Please let me know if you need any more information I'll be happy to provide it.

Your host may not allowing remote connection.
You may need to add Access Host by Login into your host server and go to Remote MySql (I am referring GoDaddy)
You need to provide either your IP Address in host or % to access remotely from anywhere.

Establish MS SQL 2008 connection with JDBC using domain credentials

I have three servers, App Server, Domain Controller and SQL Server. All of them are connected trough the local network.
What I am trying to accomplish is to successfully connect my app to the database using the credentials of an authorized domain user (ex: dom\dbadmin).
When I connect locally using those credentials, it works.
When I run the next code trough CMD on the APP Server with the right credentials and local IP, it works!
RUNAS /user:dom\dbadmin /netonly "C:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\ManagementStudio\Ssms.exe"
But when I try to connect with my app to the database with the following connection string it does not connect.
jdbc:sqlserver://10.20.30.110\MSSQLSERVER;databaseName=dBase;user=dom\dbadmin;password=!8899#te$t;
I have successfully made a connection to a identical DB but with SQL credentials and a remote ip and it works.
Am I doing something wrong? Or is it just not possible to make a connection with JDBC and domain credentials?

As far as I know - for passthrough authentication to work (SSPI in connection string) - you'll have to allow the domain controller to make the decision to allow you in with your credentials or not. In order to make this decision the controller will reply on your windows authentication with all imposed security restriction on computers within that domain. If you are logged on a computer as CORP\UserName then SSMS will not allow you to connect as someone else such as MyDomain\OtherUser. That is even if you know the correct password.
If you need an application to connect to an SQL Server you'll probably have to enable mixed authentication on the SQL Server and then generate an application password (not relying on Windows authentication).

do i need a tomcat server to make java jdbc swing application to run on lan

I am attempting to create a MySQL and Java client app for my home network.On the server machine I successfully connected to the MySQL as root
Now I want to connect to MySQL from my client PC using the Java client program,
How to do this??
Do i need to install Tomcat Server to run on server for this.
I am using Windows 7 on all my clients and server machines.

Tomcat server is used for web applications.You just need to create a JDBC code and in the URL string just give the ip address of the system where mysql is installed.For example
connection = DriverManager
.getConnection("jdbc:mysql://192.168.1.205:3306/database_name","root", "password");
Also if you have not granted the permission in mysql then grant it .See this for granting permission for access to mysql on remote system

Depending on what you want to achieve, you need to establish a JDBC connection to the server. Take a look at the JDBC trail for more details.
This will allow you to connect directly from you client machine to your database server. This would be done using the required JDBC connection URL for the MySQL connection, for example jdbc:mysql://[host][,failoverhost...][:port]/[database] »
[?propertyName1][=propertyValue1][&propertyName2][=propertyValue2]..., check out Driver/Datasource Class Names, URL Syntax and Configuration Properties for Connector/J for more details.
You may also need to configure your MySQL server to allow remote access before you can connect

You just need to do two things:
Make sure the server hosting MySQL allows incoming connections
Write JDBC code and use your MySQL server hostname/ipaddress in the jdbc string to connect and use it.

SQL Database Connection is not establishing with java Web Application server which is in DMZ

I have a Java web application which deployed at DMZ server. I have written the below code for local machine database connection establishment in web application
url= jdbc:microsoft:sqlserver://" + ipAddress + ":1433;databaseName=" + loginForm.getDbName();
conn = DriverManager.getConnection(url, loginForm.getDbUserName(), loginForm.getDbPWD());
Now I am accessing the application through internet and passing the ipAddress of local machine, local machine dB, username, password.
but getting the below error:
java.sql.SQLException: [Microsoft][SQLServer 2000 Driver for JDBC]Error establishing socket.

Some things you can try:
Check that your server is listening on that port
Check that your server will allow traffic on that port
Check that any other intermediary firewall will allow traffic on that port
Ping the server
See if you can telnet to the server/port
See if you can access any other services on the server (web, email, whatever)
The error seems to suggest that the server is contactable, but it is either not listening on the port, or it is refusing to talk to you - have you checked the server logs?

The web application simply cannot establish a TCP/IP connection with the specified database.
The machine whose IP address is in the ipAddress variable should be accessible (through network) from the web application server.
Can you telnet the 1433 port of ipAddress from the web application machine?
Check if:
The database is online at the (default) 1433 port;
The database is accepting incoming TCP/IP connections (check this link to learn how to enable it);
There are no firewalls between the web application server and the database server.
Also, as you seem to be inputting the ipAddress from a form, check for eventual typos and String conversions.

java mysql connection across network

I need to connect to a mysql database across a network.
The connection string ive given is
"jdbc:mysql://host/dbname"
i can access the site across the network but the only problem is with the java database connection.
Ive updated the phpmyadmin.conf file giving
# Deny from all
Allow from all
But still the database connection cannot be made.
Please help me..

I don't know much aboud phpmyadmin, but what I did to configure a remote db:
The connection string is: jdbc:mysql://host:port/dbname
The port is 3306 by default
The mysql user is often name#localhost, you need to configure a user for the remote (client) machine (IP address, hostname, wildcard)
HTH

Ok, there are few things you need to check ...
1) If your database got username/password
2) Have you restarted your server after altering phpmyadmin.conf?
3) Make sure you are connecting to the correct port. Ex: mysql://host:port/dbname (if port differs from default.
4) make sure that the PC that have the DB allows incoming connections through the port.
If you still facing problems, try disabling your antivirus/firewall on the PC that have the DM and try.