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).
Related
Suppose, I have a website for a school to collect students information and data.And my site has a MySQL databse.So how can I or my desktop application get those data from my site's database?Basically, when I use MySQL for my desktop application I write some line of codes to connect with my local MySQL database which is given below.
public settingdatabase(){
try{
Class.forName("com.mysql.jdbc.Driver");
con=DriverManager.getConnection("jdbc:mysql://localhost:3306/rgacd","root", "");
stat = con.createStatement();
}catch(Exception ex){
System.out.println("Error: "+ex);
}
}
But when I try to connect with any HTTP site's database throough my desktop application what should I do.
Thanks In Advance. :D
Typically there are firewalls involved. Many networks running web servers will only accept incoming http/https connections (ports 80 and 443). Other ports (such as 3306 to connect to a mysql database) are closed to the outside world. The web server for the site often connects to an application server (e.g. Tomcat) that has network privileges to access the internal database.
So the simple answer is usually you can't directly connect to the database backing any arbitrary website because you don't have access to it.
Here is a somewhat typical architecture courtesy of Tivoli and an IBM slide deck:
By design, in most cases, direct access to the RDBMS is simply inaccessible to the users outside the firewall.
Now, in the unusual case that the firewall allowed an open port to connect to the database from any external machine, then you could connect to the machine via a jdbc network connection (the same as you are doing by accessing the database over localhost:3306). To establish such a connection you would need to use the publicly available address of the database machine (which may or may not be the same as the address used for the http connection, depending upon the network configuration of the system).
I am working with two system in wired internet. One is mysql database server and another is java client application. Both computer are connected to internet via wire. So My problem is , I can not connect to remote server using username and password. But with Netbeans IDE i can able to connect but after making jar file i can't not connect?
my connection code is : "jdbc:mysql://192.168.2.107:3306/db_store", "user", "pass"
What would be the problem ? and how can i solve it? thanks.
I am currently using Netbeans 8 and trying to make the MySQL database connect to the program without downloading MySQL on to the users computer or running a server, so the MySQL file must be local. How may I proceed is there a way to package with the jar of the program or should I proceed another way.
Also here is the code that connect to the database.
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/chutesandladders", name, password);
Statement update = conn.createStatement();
It is not possible to package a MySQL "file" in JAR. MySQL always runs as a server process that you can connect to using JDBC.
The JDB URL dbc:mysql://localhost:3306/chutesandladders from your question contains the hostname localhost and the port 3306 where the MySQL server is running.
If you want a client on a different machine to connect to this server, you must use the real hostname of the server in the JDBC URL. Of course you must allow access from this client to the server.
Edit: If you must use a relational database but can not access a server, you should use an embedded database. A widely used is H2.
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] ยป
[?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.
I am trying to connect to a mysql db on a shared server. I am using a java application to make the connection. Problem doesn't happen when I connect to localhost db.
URL = "jdbc:mysql://SHARED HOST IP:3306/DBNAME";
USER = "dbUSER";
PASS = "dbPASS";
Connection conn = DriverManager.getConnection(URL, USER, PASS);
java.sql.SQLException: Access denied for user 'DBUSER'#'mycomputersIP???' (using password: YES)
It is strange that it says denied for dbuser# mycomputersip instead of dbuser#sharedhostIP
Is there a setting on my wireless router that is screwing things up?
your database is not configured for remote access. basically its saying your user located at your ip doesn't have permission to access the database, as opposed to your user located at the web server.
if you are using a shared hosting package, you will either need to turn this on in your admin area, or it may not be supported by your host. some hosts additionally require that externally accessible databases may not be on the web server, so your connection string would likely change as well.
There are no settings screwed up on your router. If you are trying to connect from mycomputersIP (i.e. the program opening the JDBC connection is on your computer), then the database will need to grant permission to 'DBUSER'#'mycomputersIP'. (In fact, that is the point of that portion of the grant string.)
Just as VeeArr said, 'DBUSER'#'mycomputersIP???' is standard. For some reason your host exposes your database but isn't allowing you to connect. There's a way in phpMyAdmin to do it under Privileges if you manage the whole database or there's an option in your control panel. If not, then you need to contact your host for guidence
The Same problem I have got earlier, Its very simple, The access has been denied by your ISP to access DB,
Raise the request to grant access, it will work.