Oracle Community Network
here is a list of all interview questions and answers you will ever encounter in every single interview at all companies.
Search on google eheheh google give u lot of lists :p
check this link hope it will be help full to you.
Maggie Miser here are Top 10 Oracle Interview Question and Answer - Database and SQL. Check it !!
Realy Thanks for Sharing this.. Thank you Sid Muth for your link :)
Thank you for posting that question and there answers