# Running the NsSample sample program

To run the NsSample program:

1. Open a command prompt and change directories to the %DERBY_HOME%\demo\ directory, where %DERBY_HOME% is the directory where you installed Derby.
2. Set the CLASSPATH to the current directory (".") and also include the following jar files in order to use the Network Server and the network client driver:
   derbynet.jar
     The Network Server jar file. It must be in your CLASSPATH to use any of the Network Server functions.
   derbyclient.jar
     This jar file must be in your CLASSPATH to use the Network Client driver.
   derby.jar
     The Derby database engine jar file.
   derbytools.jar
     The Derby tools jar file.
3. Test the CLASSPATH settings by running the following Java command:

        java org.apache.derby.tools.sysinfo

   This command shows the Derby jar files that are in the classpath as well as their respective versions.
4. After you set up your environment correctly, run the NsSample program from the same directory:

       java nserverdemo.NsSample

   If the program runs successfully, you will receive output similar to that shown in the following table:

       Derby Network Server created
       Server is ready to accept connections on port 1621.
       Connection number: 1.
       [NsSample] Derby Network Server started.
       [NsSample] Sample Derby Network Server program demo starting.
       Please wait .....................
       Connection number: 2.
       [NsSampleWork] Begin creating table - SAMPLETBL and necessary indexes.
       [NsSampleClientThread] Thread id - 1; started.
       [NsSampleWork] Thread id - 1; requests database connection,
       	dbUrl =jdbc:derby:NSSampledb;
       [NsSampleClientThread] Thread id - 2; started.
       [NsSampleWork] Thread id - 2; requests database connection,
       	dbUrl =jdbc:derby://localhost:1621/
       	NSSampledb;deferPrepares=true;
       Connection number: 3.
       [NsSampleWork] Thread id - 1 selected 1 row [313,Derby36   ,1.7686243E23,9620]
       [NsSampleWork] Thread id - 1 selected 1 row [313,Derby36   ,1.7686243E23,9620]
       [NsSampleWork] Thread id - 1; deleted 1 row with t_key = 9620
       [NsSampleWork] Thread id - 1 selected 1 row [700,Derby34   ,8.7620301E9,9547]
       [NsSampleWork] Thread id - 1 selected 1 row [700,Derby34   ,8.7620301E9,9547]
       [NsSampleWork] Thread id - 2 selected 1 row [700,Derby34   ,8.7620301E9,9547]
       [NsSampleWork] Thread id - 2 selected 1 row [700,Derby34   ,8.7620301E9,9547]
       [NsSampleWork] Thread id - 1; inserted 1 row.
       [NsSampleWork] Thread id - 1 selected 1 row [52,Derby34   ,8.7620301E9,9547]
       [NsSampleWork] Thread id - 2; updated 1 row with t_key = 9547
       [NsSampleWork] Thread id - 1; deleted 1 row with t_key = 9547
       [NsSampleWork] Thread id - 2 selected 1 row [617,Derby31   ,773.83636,9321]
       [NsSampleWork] Thread id - 2 selected 1 row [617,Derby31   ,773.83636,9321]
       [NsSampleWork] Thread id - 2 selected 1 row [617,Derby31   ,773.83636,9321]
       [NsSampleWork] Thread id - 2 selected 1 row [617,Derby31   ,773.83636,9321]
       [NsSampleWork] Thread id - 1; inserted 1 row.
       [NsSampleWork] Thread id - 2; deleted 1 row with t_key = 9321
       [NsSampleWork] Thread id - 1; deleted 1 row with t_key = 8707
       [NsSampleWork] Thread id - 1; closed connection to the database.
       [NsSampleClientThread] Thread id - 1; finished all tasks.
       [NsSampleWork] Thread id - 2; deleted 1 row with t_key = 8490
       [NsSampleWork] Thread id - 2; closed connection to the database.
       [NsSampleClientThread] Thread id - 2; finished all tasks.
       [NsSample] Shutting down Network Server.
       Connection number: 4.
       Shutdown successful.

Running the NsSample program also creates the following new directories and files:

NSSampledb
  This directory makes up the NSSampledb database.
derby.log
  This log file contains Derby progress and error messages.

Parent topic: The NsSample sample program