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Oracle Tips by Burleson |
Chapter 8 General Oracle Auditing
It may be necessary to protect the material in
archival media for quick retrieval. The exported file can be
imported back for query if needed. However, import takes time and is
not very convenient, particularly with the massive amount of redo
log activity. Since the aud$ table does not have any columns of the
LONG data type, it can be exported as a flat file and then loaded
back when necessary using SQL*Loader direct load option, or using
Oracle 9i’s External Table option.
Online Access
If it is necessary to provide online access to
the archived aud$ table, a different archival strategy should be
considered. One way of achieving this is by creating the archived
table in a separate tablespace. This tablespace may be placed in a
filesystem made of inexpensive hardware, such as Serial ATA, or even
Write Once Read Many (WORM) drives such as optical jukeboxes. The
Serial ATA devices offer the least dollar per megabyte of storage at
respectable access speeds. These devices are being used right now
for archiving the log directory and the same concept can be extended
to the aud$ table archival too. Since access to the archived table
is limited to SELECTs, and perhaps an occasional TRUNCATE by the DBA,
Serial ATA devices provide an adequate solution.
A Complete System
Next, we will devise a system that will provide
all the features we want, at a cost that can be justified. This
procedure will also create a HIPAA compliant archival model for the
aud$ table.
Requirements
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