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Under an HP-UX system, you can use the administrative tool SAM to create the users. In any UNIX or Linux system, you can create the users manually, with the following command: # /usr/sbin/useradd g oinstall G dba In the preceding command g denotes the primary group of the user oracle, which is the oinstall group. G is the secondary group, which is the dba group. d denotes the home directory for the new user. p is the password for the oracle user. You may use the following command to set the password for the oracle user, if you wish: # /usr/bin/passwd oracle Refer to 3 for more details about the passwd command. Note that the default home directory of the oracle user should be similar to that of the normal users of the system. The ORACLE_HOME directory is not meant for the oracle user; it s the location for the Oracle software binaries and similar files. d /home/oracle -p oracle1 oracle

The NavigatorSearch test fixture is the most complicated one, which is why I m presenting it last. Since the search functionality is spread over two classes (NavigatorSearch and CoordinatorSearch), this test fixture tests the two classes together. Figure 11-28 shows the UI of the test fixture.

The oracle user should be given read, write, and execute privileges on all files and directories that are part of the Oracle Database 11g installation.

The next step is to set the default Linux/UNIX file permissions. To do this, the system administrator must first check the existing default permissions by issuing the umask command. If the umask is set to anything but 022, change it to 022 by issuing the umask 022 command. The system administrator can simply open the default login shell (which, for the BASH shell on Red Hat Linux, is .bash_profile) and add this line: umask 022

Figure 11-28. The user interface of the NavigatorSearch test fixture, after running a search Figure 11-29 shows the test fixture s wiring diagram.

As you saw in 3, the default permissions for a newly created file system are 666 under the octal notation. That is, everyone is able to read and write any file. By using a default file permission of 644 (by using the umask of 022), you are granting any users other than the oracle user read permission only on the file systems. Of course, the system administrator must make sure the oracle user has write permissions to create files in all the user s directories. The UNIX administrator must ensure that a local bin directory exists, such as /user/local/bin or /opt/bin. The administrator must further ensure that this directory is included in the PATH environment variable used by the oracle user and that the oracle user has execute permission on this directory. The system administrator must also create a directory with the name /var/opt/oracle that is owned by the oracle user. This directory will contain files that describe various components of the Oracle server software installation. The following commands will create the directory and assign it the necessary privileges: $ mkdir /var/opt/oracle $ chown oracle:dba /var/opt/oracle $ chmod 755 /var/opt/oracle

The system administrator (root) must also create the Oracle base directory, which acts as a top-level directory for Oracle software installations, and its ownership must be assigned to the oracle user. Assuming you choose the standard /u01/app/oracle directory as your Oracle base directory, you can create it and assign the necessary ownership and file permissions with these commands: $ mkdir -p /u01/app/oracle $ chown -R oracle:oinstall /u01/app/oracle $ chmod -R 775 /u01/app/oracle During the installation, you must set the ORACLE_BASE environment variable to specify the full path to this directory (/u01/app/oracle).

The Oracle Inventory directory is usually the /$ORACLE_BASE/oraInventory directory, and it contains an inventory of all Oracle software installed on the system. You don t need to explicitly create this directory. The Oracle Universal Installer will prompt you for its location the first time it installs software on your server. The installer creates the directory and assigns the Oracle user the necessary rights.

Figure 11-29. The wiring diagram of the NavigatorSearch test fixture When the user clicks the Search button, NavigatorSearch fires an OnSearchRequested event, which is handled by CoordinatorSearch.StartSearch. The latter method creates a background thread and fires an OnSearchStart event that is wired to NavigatorSearch.Start. FormMain handles three CoordinatorSearch events: OnSearchRequested, OnItemFound, and OnMessage. The first clears the listbox at the top of the form. The second adds an item to the listbox. The third adds a message to a label at the bottom of the form. Listing 11-21 shows the salient code of the test fixture in C# and VB .NET. Listing 11-21. The Salient Test Fixture Code for NavigatorSearch C# public class FormMain : System.Windows.Forms.Form { CoordinatorSearch coordinatorSearch; NavigatorSearch navigatorSearch;