All I am working on re-architect existing high transaction OLTP system facing customers with 1Million users per hour. It is on Oracle 11.2 Version on Enterprise Linux with 2 node RAC. This system faced by around approx 8000 clients. Microsoft .NET web tier. I am new to this place and in database, many tables are Hash partitioned using VPD. I was debating myself, it would be better with none other Hash Partition. Not sure, it is because last 7 years I developed most of partition types except Hash. Anyone have insight/experience with Hash on OLTP (or) with VPD? Thanks in advance. Karth -- //www.freelists.org/webpage/oracle-l