Hi there, It is just a quick idea. I have suspicious that ad_applied_patches contains information about patches that you applied on the system, ad_bugs has information about all bugs and patches that have been included in the patches you applied. For example you apply merged patch merge123 it contains 5 patches 10001 10002 10003 … ad_applied_patches – will have one record about merge123 ad_bugs – 5 records Another example: you apply maintenance patch which includes 51 other patches. In that case ad_applied_patches – will have one record about maintenance patch ad_bugs – 51 + 1 I hope my thought is clear for you. PS Anyway I use ad_bugs table in order to find out do I have one or another patch to apply. Jurijs On 8/2/07, sridhar rao <drmsr6@xxxxxxxxx> wrote: > Hi DBA'S > can u explain difference between ad_bugs and ad_applied_patches(which > is asked recently. > thanks in advance > sridhar.m > > -- Yury +371 29268222 (+2 GMT) ============================================ http://otn.oracle.com/ocm/jvelikanovs.html