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Here s a real-life incident to give you an idea of what can happen without auditing. A user had been training a new employee in how to use the in-house billing system. They had gone through all the different screens, creating new customers and orders, changing entries, deleting entries . . . the whole works. Unfortunately, the user had performed the entire training session while connected to the live system, rather than the test system, and only realized this after a good 30 minutes or so. This led to a frantic call to tech support to ask how to undo the changes they had made. How did this happen The user had two shortcuts on his desktop, both pointing to the same application but with a parameter in the shortcut determining whether the user connected to the test or live database. Rather than prominently displaying on screen which database the user was connected to, the database connection details were tucked away in a Help About type of pop-up window. On that day, the user accidentally started the application using the wrong shortcut and never thought to check the Help About pop-up window before making all of those database changes. Even worse than not displaying the database connection prominently, the application used a common single account for every user, rather than using separate database accounts for

Figure 5-4 OES - NetWare still uses DOS to boot the server 3 From the DOS file C:\AUTOEXECBAT, the command c:\nwserver\serverexe is executed This starts the NetWare kernel and puts DOS in the background DOS will not be used while the NetWare kernel is operational; you will only see it when you shut down the kernel 4 When SERVEREXE is activated, it scans the configuration file C:\NWSERVER\ STARTUP NCF From this file, SERVEREXE finds information about the hardware it has to use in starting the server For example, here it finds information about the drivers that have to be loaded for the storage devices This file also contains special commands that can be used to specify how the memory of the server should be used You can edit this configuration file from a DOS prompt with an editor.

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logging in to the database. So, as far as the database was concerned, the same database user was performing all of the changes, since there was no way to tell users apart. This real-life story illustrates two (or rather, at least two!) very important points: If you don t audit the users actions, you will not be able to determine what they have done. If you use a common login for all users, you will not be able to track back changes to an individual person, even if you audit every action. The purpose of this section is to demonstrate how you can very effectively audit the actions of users using your APEX application, as well as anyone accessing the data using another method.

It s also possible to edit it after the NetWare kernel has finished loading 5 Once SERVEREXE has been loaded, DOS will disappear into the background and the NetWare kernel will become active The file SYS:SYSTEM\AUTOEXECNCF is then read to find out how NetWare should operate It lists all the NLMs that have to be loaded while starting the server It s possible to influence the boot procedure of the server by employing one of the following measures Press F5 or F8 when the text Starting DOS displays on your screen These keys interrupt the boot procedure and get you to the DOS prompt so you can load the server manually From the DOS prompt, type SERVER NS to start the server without using STARTUPNCF This allows you to load all necessary drivers manually.

The previous sections covered how you can use the DBMS_RLS package to implement VPD policies that restrict the view of data that users will see. You might be thinking that you could somehow use this to audit users actions, perhaps by performing some logging inside the policy function. Or you might decide to create triggers on the table itself to perform some logging into another table whenever any DML is performed on that table. However, rather than reinventing the wheel, you can use the auditing functionality of the database to do this for you.

From the DOS prompt, type SERVER NA to start the server without processing the AUTOEXECNCF configuration file From the DOS prompt, type SERVER NL to boot the server without displaying the Novell logo on startup This allows you to see exactly what happens on system boot Type SERVER NDB to boot the server without opening the eDirectory database This is useful if you need to do maintenance of the eDirectory database on your server..

You have successfully completed your part of the user story as far as you know, but the user story is not completed until the user story has been accepted by the customer For acceptance of the user story, the customer must define the acceptance criteria with the help of the acceptance tester, as discussed in the Other Team Members Duties section later in the chapter Now let s work on another user story..

Note The auditing functionality described here assumes you are using the Enterprise Edition of the database. If not, you will need to implement auditing by using triggers or in some other appropriate method, such as performing logging statements after any DML code statements in your application.

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