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150 | Chapter 6: Oracle Security, Auditing, and Compliance
Auditing
The Oracle database gives you the ability to restrict unauthorized access to your
valuable data. However, your security is only as good as your implementation, and
people do make mistakes. In addition, youmay want to understand what type of
activities??”legitimate or not??”are taking place with your data. The ability to audit
database activity can address both of these issues.
Oracle??™s audit capabilities let you track actions at the statement level, privilege level,
or schema object level for the entire database or particular users. Auditing can also
gather data about database activities for planning and tuning purposes. Auditing of
connections with administrative privileges to an instance and audit records recording
database startup and shutdown occur by default.
You can also audit sessions at the user level, which captures some basic but
extremely useful statistics such as the number of logical I/Os, the number of physical
I/Os, and the total time logged on.


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