Good way to understand MVCC feature is XID(transaction-id) and with the help of hidden columns prefixed for each row in a table. You need to test with doing DML(update/Delete/Insert) statements by opening multiple sessions to know about MVCC feature.
Eg:- select xmin,xmax,cmin,cmax,ctid, * from <tablename>; --- Regards, Raghavendra EnterpriseDB Corporation Blog: http://raghavt.blogspot.com/ On Sun, Oct 23, 2011 at 9:01 AM, AI Rumman <rumman...@gmail.com> wrote: > Is there any tools by which I can test out the MVCC feature of postgresql? >