Network error IOException: network is unreachable

Environment:
SQL Developer 1.5.5 running on Windows XP Pro SP3
Connecting (or trying) to SQL Server 2000 at remote location.
I can 'ping' the server and have downloaded and added the JTDS JDBC driver from Sourceforge.com to the Tools->Preferences->Database->Third Party JDBC Drivers
I am using a 'dbo' account into the database I'm trying to reach and migrate. I am using port 1433 as directed by the remote DBA.
Unfortunately I'm getting the above error which is very informative. :-(
Any ideas on how to resolve, research, debug, etc.???
How can I insure that the JTDS driver is being used?
Many thanks!!
-gary

Gary,
first of all you can test the connection using the MS SQL Server ODBC driver which is commonly installed on all newer Windows releases by default. This allows you to check the connect details you got and also you have access to the SQL Server
Once checked now verify the SQL Developer installation:
In Tools-> Preferences please check again the jtds-1.2.jar file is shown in the Database -> 3rd party JDBC drivers.
Next step is to add a new connection.
Enter the connect details and manipulate one value by explicite setting a wrong value.
With a wrong hostname that doesn't exist the test button will generate an error: unknown server hostname
Specifying a wrong port will fail with cannot connect MS SQL Server running on <hostname> if something is listening on this port on the target hostname -
or if nothing is listening on the port the Network IO exception - could not create socket is raised.
If you still can't proceeed - then you might think about the offline source model migration.

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Java.sql.SQLException: Network error IOException: Connection refused:

hi...i am tryin to connect to sqlserver2000 ....i wanted a dsnless connection...i have downloaded jtds driver...set the classpath..no joy..i'm connecting to sqlserver's default port 1433..i also confirmed that sqlserver tcp is enabled...still gettin the same err:
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at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java
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at net.sourceforge.jtds.jdbc.ConnectionJDBC3.<init>(ConnectionJDBC3.java
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at net.sourceforge.jtds.jdbc.Driver.connect(Driver.java:182)
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at java.sql.DriverManager.getConnection(DriverManager.java:171)
at SQLServerConnect.getConnection(SQLServerConnect.java:27)
at SQLServerConnect.displayDbProperties(SQLServerConnect.java:44)
at SQLServerConnect.main(SQLServerConnect.java:80)
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at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
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at java.net.Socket.connect(Socket.java:507)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at net.sourceforge.jtds.jdbc.SharedSocket.createSocketForJDBC3(SharedSoc
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at net.sourceforge.jtds.jdbc.SharedSocket.<init>(SharedSocket.java:255)
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java
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Error: No active Connection
i even tried connecting to the port 1433 thru telnet...err:Could not open connection to the host, on port 1433:connection failed...
i thought it cud b a firewall issue...disabled my windows firewall..no joy..
can ne body help me with this....need to solve this desparately
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Old, but still coming up in google searches. Here's the solution that worked for me:
Dynamic Port Allocation explained:
http://support.microsoft.com/kb/823938
How to: Configure a Server to Listen on a Specific TCP Port (SQL Server Configuration Manager)
http://support.microsoft.com/kb/823938
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5. In the console pane, click SQL Server 2005 Services.
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SQL2000 - Network error IOException: Connection refused: connect

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henk wrote:
I think 'systemd' should be 'systemctl'.
Try
ip link
to see if your device is still called eth0.
sorry about that. I did mean "systemctl".
Novicode wrote:
henk wrote:
I think 'systemd' should be 'systemctl'.
Try
ip link
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Last edited by cris9288 (2013-06-24 14:44:58)

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Network error IOException: network is unreachable

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