Hi, I have a situation where my function based index is not getting used. Its an NVL based functional index NVL(gender,0) =0 Is my where clause. And I have a index on NVL(gender,0) It was getting used previously, but not now. I use the some in update and select queries both the cases, index is not getting used. Using 10g R2 Any thoughts? Sent on my BlackBerry® from Vodafone-- //www.freelists.org/webpage/oracle-l