oracle log for table update infimation

30 pts.
Tags:
Oracle 10g
Oracle administration
Oracle security
Windows 2000 Server
I am a system Administrator, I am having Oracle 10g database server on windows 2000 server in my office LAN network front end is forms & reports 6i. in last 10days 1 user connected to oracle database other than regular forms 6i program and modified one table record column value by update. How can i track the user or other modifyed records date and time. How can i secure my data base by this manipulations in my network. Pl help me

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The first line would be to define strong passwords for database user accounts, and grant only the necessary privileges to each user or role. If a user knows a valid (and privileged) account and its password, there is not much the RDBMS can do.

The username and password that users enter to log into the forms applications should not be the real database user. Users should not know database accounts.

If archived logs are available, you could use Log Miner to look for the changes in the logs.

To track this kind of changes in the future, you could define triggers to log changes, or you can enable Database Auditing, which was improved in 10g and does not have the performance impact that the audit implementation by triggers would have.

Have a look at the following document, which you could find useful.

<a href=”http://hosteddocs.ittoolbox.com/LC100705.pdf”>Oracle Security – A Definition in Plain English</a>

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