Starting the Network Server To start the Network Server, you can invoke a script, a jar file, or a class. Starting the Network Serverfrom scripts Network Serverstarting Note that you should always properly shut down the Network Server after use, because failure to do so might result in unpredictable side-effects, such as blocked ports on the server.

You are strongly urged to enable user authentication when you run a Network Server. For details on how to configure user authentication, please consult the "Working with user authentication" section in the Developer's Guide. You are also urged to install a Java security manager with a customized security policy. For details on how to do this, see .

You can start the Network Server in any of the following ways:

  • If you are relatively new to the Java programming language, follow the instructions in "Setting up your environment" in to set the and JAVA_HOME environment variables and to add /bin to your path. Then use the startNetworkServer.bat script to start the Network Server on Windows machines and the startNetworkServer script to start the Network Server on UNIX systems. These scripts are located in $/bin, where $ is the directory where you installed .

    You can run NetworkServerControl commands only from the host that started the Network Server.

    Operating System Command Windows set DERBY_HOME=C:\derby set JAVA_HOME=C:\Program Files\Java\jdk1.5.0_10 set PATH=%DERBY_HOME%\bin;%PATH% startNetworkServer UNIX (Korn Shell) export DERBY_HOME=/opt/derby export JAVA_HOME=/usr/j2se export PATH="$DERBY_HOME/bin:$PATH" startNetworkServer

  • If you are a regular Java user but are new to Derby, set the environment variable, then use a java command to invoke the derbyrun.jar or derbynet.jar file:

    Operating System Command Windows set DERBY_HOME=C:\derby java -jar %DERBY_HOME%\lib\derbyrun.jar server start or java -jar %DERBY_HOME%\lib\derbynet.jar start UNIX (Korn Shell) export DERBY_HOME=/opt/derby java -jar $DERBY_HOME/lib/derbyrun.jar server start or java -jar $DERBY_HOME/lib/derbynet.jar start

    To see the command syntax, invoke derbyrun.jar server or derbynet.jar with no arguments.

  • If you are familiar with both the Java programming language and Derby, you have already set . Set your classpath to include the jar files. Then use a java command to invoke the NetworkServerControl class directly.

    Operating System Command Windows %DERBY_HOME%\bin\setNetworkServerCP java org.apache.derby.drda.NetworkServerControl start UNIX (Korn Shell) $DERBY_HOME/bin/setNetworkServerCP java org.apache.derby.drda.NetworkServerControl start

The default system directory is the directory in which was started. (See the for more information about the default system directory.)

You can specify a different host or port number when you start the Network Server by specifying an option to the command.

  • Specify a port number other than the default (1527) by using the -p portnumber option, as shown in the following example:

    java org.apache.derby.drda.NetworkServerControl start -p 1368

  • Specify a specific interface (host name or IP address) to listen on other than the default (localhost) by using the -h option, as shown in the following example:

    $DERBY_HOME/bin/startNetworkServer -h myhost -p 1368

    where myhost is the host name or IP address.

    Before using the -h option, you should run under the Java security manager with a customized security policy and you should enable user authentication.

By default, the Network Server will listen to requests only on the loopback address, which means that it will only accept connections from the local host.