Skip scans

Is anybody using index skip scan feature? What would be a situation in which
the feature should be used? I have a SQL statement, part of  ETL process 
that I
have to tune. The initial reuslts are encouraging although not 
dramatic.  Does anybody
else have any type of practical experience with skip scans and index_ss 

Mladen Gogala
Oracle DBA
Ext. 121


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