Tuesday, December 9, 2008, 4:26:08 PM, you wrote: RM> Andrey Ivanov wrote: >> There is a special type of indexing for the VLV sort searches but I have >> not found what sort of index I should create to make the server-side sort >> on a certain attribute optimized. >> RM> I think each attribute you want to sort by must be indexed for equality. No, it does not seem to be sufficient. I have activated all the indexes for the attribute (sn), the logs still show "notes=U" : [09/Dec/2008:16:36:38 +0100] conn=3817 op=3 RESULT err=0 tag=101 nentries=40 etime=0.004000 notes=U ... Maybe there is a special type of index for server-side sorting like the one for the VLV? Andrey Ivanov tel +33-(0)1-69-33-99-24 fax +33-(0)1-69-33-99-55 Direction des Systemes d'Information Ecole Polytechnique 91128 Palaiseau CEDEX France