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Virtual Indexes in Oracle

Virtual indexes are a undocumented feature in Oracle.  virtual index has nosegment asscociated with it.
It is not seen by other sessions, so it doesn’t affect the normal running of your system.

Virtual indexes dont have their use in a development system but can be used, if a query or group of queries have to be tested in production

useful example on virtual indexes

http://shaharear.blogspot.com/search/label/Oracle%20Tips%20And%20Tricks

http://www.databasejournal.com/features/oracle/article.php/3413961/Virtual-Indexes-in-Oracle.htm

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Categories: Oracle
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