Hi guys I am trying to connect NetBeans IDE with SqlServer, everything I did is correct, setting ports to 1433 in SQL Server Configurtion Manager and here is my code:
public Db(String login,String password, String dbname) throws SQLException{
try {
String url = "jdbc:sqlserver://MJRLGUE\\SWING;databaseName="+dbname+";integratedSecurity = false;";
Driver monDriver = new SQLServerDriver();
DriverManager.registerDriver(monDriver);
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
con = DriverManager.getConnection(url,login,password);
this.connecte = true;
System.out.println("Succes");
} catch (ClassNotFoundException e) {
System.out.println("echec driver "+e.toString());
this.connecte = false;
}
}
and the error message:
Try again com.microsoft.sqlserver.jdbc.SQLServerException: Failed to connect to host MJRLGUE, named instance swing. Error: "java.net.SocketTimeoutException: Receive timed out". Verify the server name and the instance name, and make sure that no firewalls block UDP traffic to port 1434. For SQL Server 2005 or later, verify that the SQL Server Browser service is running Execution on the host.
Exception in thread "main" java.lang.NullPointerException
at Model.Test.remplirDirecteur(Test.java:79)
at Main.main(Main.java:17)
C:\Users\Ghassane\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 29 seconds)
my instance name in SqlServer: MJRLGUE\SWING
code to connect the database: db= new Db("sa","ensak","SuiviMarche");
Check that you can ping the sql server from the machine running the code.
If you can you may need to to configure the sql server to allow remote connections, as you have said you already checked the firewall and I assumed the instance is running on the standard port of 1433
Also, check that you can you use SMSS to connect to the sql server from the machine running the code.
Edit:
Looking at your error message you are not using the standard port of 1433 as the message says you are trying to connect to 1434.
make sure that no firewalls block UDP traffic to port 1434
try using jdbc:sqlserver://localhost:1433 as your host.
check your url and make sure server is running properly and port number and service free from firewall.
Related
Trying to connect o MS SQL server that runs on the same Win 10 machine with my project in Eclipse:
String url = "jdbc:sqlserver://GOLD\\SQLEXPRESS;databaseName=PrintLog;";
Connection conn = DriverManager.getConnection(url ,"user","passwd");
But got exception:
com.microsoft.sqlserver.jdbc.SQLServerException: The connection to the host GOLD, named instance sqlexpress failed. Error: "java.net.SocketTimeoutException: Receive timed out". Verify the server and instance names and check that no firewall is blocking UDP traffic to port 1434. For SQL Server 2005 or later, verify that the SQL Server Browser Service is running on the host.
Computer name is GOLD. I can connect to DB from C# without problem. Authentication is enabled both windows and SQL server. I'm expecting to get Windows authentication while connect
SQL server properties:
How to find the problem?
UPD
I got better result by adding port number to connect string:
String url = "jdbc:sqlserver://GOLD\\SQLEXPRESS:1433;databaseName=PrintLog;";
Does it means that default port number is different?
I am trying to connect to an SQL Server remote database but I can't create new connection in Android although I can connect through a Java application with exact the same code. DriverManager.getConnection() throws an exception. Here's my code
public DatabaseManipulation()
{
URL=String.format(URL,localDatabaseName);
Connect();
}
public void Connect() {
try {
connection = DriverManager.getConnection(URL,
DATABASE_USERNAME, DATABASE_PASSWORD);
statement=connection.createStatement();
} catch(Exception e) {
Log.d("con",e.getMessage);
}
}
Exception:
"The TCP/IP connection to the host 192.168.100.23, port 1433 has
failed. Error: "/192.168.100.23:1433 - Network is unreachable. Verify
the connection properties. Make sure that an instance of SQL Server
is running on the host and accepting TCP/IP connections at the port.
Make sure that TCP connections to the port are not blocked by a
firewall."."
When two or more SQL Servers are connected across network they do all communication using TCP/IP. The default port of SQL Server installation is 1433. This port can be changed through SQL Server Configuration Manager. TCP/IP should be enabled for SQL Server to be connected.
Go to All Programs >> Microsoft SQL Server 2008 >> Configuration Tools >> SQL Server Configuration Manager >> Select TCP/IP
I need to connect to Sql Server 2008 from java using jdbc 4.0.
I have a very simple code:
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String connectionUrl = "jdbc:sqlserver://localhost;" +
"integratedSecurity=true;";
Connection con = DriverManager.getConnection(connectionUrl);
But i have this error:
Exception in thread "main" com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:241)
...
I follow this answer:https://stackoverflow.com/a/12524566/1554397
I added jdbc4.jar in Libraries/Compile
SQL Server Browser windows service is running.
In SQL Server Network Configuration i selected Enebled on TCP/IP properties.
I Set TCP Address to 1433.
On Run,VM Options i put -Djava.library.path=my path to sqljdbc_auth.dll
And copy in JDk ,in bin sqljdbc_auth.dll.
What should I do?
EDIT:
When write in cmd telnet localhost 1433 i get 'Could not open connection to the host,on port 1433'
If using Window authentication you can do something like:
String url = "jdbc:sqlserver://MYPC\\SQLEXPRESS;databaseName=MYDB;integratedSecurity=true";
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection conn = DriverManager.getConnection(url);
and then add the path to sqljdbc_auth.dll as a VM argument (you need sqljdbc4.jar in the build path).
Take a look here for a short step-by-step guide showing how to connect to SQL Server from Java should you need more details. Hope it helps!
Please help me.I have installed Oracle 11.2.0 g on Windows 7 (32 bit) and I'm trying to connect database with jdk 1.7
I get an error saying
---exception
java.sql.SQLRecoverableException:IO Error: The Network Adapter could not establish the connection
ORACLE_HOME=E:\app\OraDhanya\product\11.2.0\dbhome_1
CLASSPATH=E:\app\OraDhanya\product\11.2.0\dbhome_1\jdbc\lib\*;C:\Program Files\Java\jdk1.7.0_03\bin
Path=E:\app\OraDhanya\product\11.2.0\dbhome_1\BIN;C:\Program Files\Java\jdk1.7.0_03\bin;
Global Database Name =orcldhamanoj.168.1.100
SID=orcldhaman
CODE:
try{
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
System.out.println("Connecting to Database");
Connection cn=DriverManager.getConnection("jdbc:oracle:thin:#orcldhamanoj:1521:orcldhaman","SCOTT","Tiger1");
System.out.println("Connected to Database");
Statement st=cn.createStatement();
st.executeUpdate("create table User(UserID number(3), UserName varchar2(20));");
System.out.println("Table Created");
st.close();
cn.close();
}
catch (SQLException e)
{
System.out.println("exception"+e);
}
The error has nothing to do with JDBC, it's a low level error that tells you the networking layer cannot make a connection to the machine your Oracle server is running on. Causes can be multiple:
Wrong connection parameters (ip / host name/ port). This is probably the most frequent cause. Check the ip / hostname using ping, and the port using "telnet [ip/hostname] port" command;
Something wrong with your network like a cable problem or wrong network settings.
In the DriverManager.getConnection method, make sure you specify the IP address of the machine on which Oracle is running -- or localhost if its your current machine.
DriverManager.getConnection("jdbc:oracle:thin:#localhost:1521:orcldhaman","SCOTT","Tiger1");
// ^^^^^^^^^ <-- Or this could be an IP address
I would suggest the following may be causing this kind of error:
(obvious) IP address is incorrect - try PING
The port is not open, or is blocked by a firewall - try TELNET
The DB listener is not running or is binding to a different network interface - again, TELNET should confirm this (also use Oracle client tools to connect)
No local ports are available for the out-going connection (unlikely) - only if you're making thousands of connections, or creating hundreds of new connections every minute.
I have a java program that connects to a MS SQL database. The program works perfectly when running through eclipse however I get an error when I run it through AIX:
java.sql.SQLException: Network error IOException: A remote host refused an attempted connect operation.
I am using jtds to connect:
String connectionString = "jdbc:jtds:sqlserver://"+dropez_ip_address+"/"+dropez_db_name;
ResultSet rs = null;
Statement stmt = null;
try{
Class.forName("net.sourceforge.jtds.jdbc.Driver");
Connection conn = DriverManager.getConnection(connectionString, dropez_db_username, dropez_db_password);
stmt = conn.createStatement();
}catch(Exception e){}
From jTDS documentation:
Why do I get java.sql.SQLException: "Network error IOException: Connection refused: connect" when trying to get a connection?
The "Connection refused" exception is thrown by jTDS when it is unable to connect to the server. There may be a number of reasons why this could happen:
The server name is misspelled or the port number is incorrect.
SQL Server is not configured to use TCP/IP. Either enable TCP/IP from SQL Server's Network Utility app or have jTDS connect via named pipes (see the URL format for information on how to do this).
There is a firewall blocking port 1433 on the server.
To check whether TCP/IP is enabled and the port is not blocked you can use "telnet 1433". Until telnet doesn't connect, jTDS won't either. If you can't figure out why, ask your network administrator for help.
My bet is your firewall does not allow the AIX host to connect.