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SQL Anywhere 12.0.0 » SQL Anywhere Server - Database Administration » Maintaining your database » Troubleshooting SQL Anywhere database issues » Troubleshooting network communications


A checklist of common problems

The following list presents some common problems and their solutions.

For information about troubleshooting connections to the database or database server, see Troubleshooting connections and Troubleshooting database server startup.

If you receive the message Database server not found when trying to connect, the client cannot find the database server on the network. Check for the following problems:

  • Under the TCP/IP protocol, clients search for database servers by broadcasting a request. Such broadcasts will typically not pass through gateways, so any database server on a computer in another (sub)network, will not be found. If this is the case, you must supply the host name of the computer on which the server is running using the HOST (IP) protocol option.

  • A firewall between the client and server may be preventing the connection. See Connecting across a firewall.

  • The personal server only accepts connections from the same computer. If the client and server are on different computers, you must use the network server.

  • Your network drivers are not installed properly or the network wiring is not installed properly.

  • If you receive the message Unable to initialize requested communication links, one ore more links failed to start. The probable cause is that your network drivers have not been installed. Check your network documentation to find out how to install the driver you want to use.

  • The server should use the TCP/IP protocol if you are connecting via jConnect.

  • If you are trying to connect to a database server on your local computer, choose Connect To A Running Database On This Computer in the Connect window. You can choose Connect To A Running Database On Another Computer if you are trying to connect to a database server running on a computer other than your local computer.

For more information about network protocol options, see Network protocol options.