-----Original Message----- From: Jon Grov [mailto:[EMAIL PROTECTED]] Sent: Friday, April 05, 2002 12:54 PM To: Dann Corbit Cc: Mike Mascari; Doug McNaught; [EMAIL PROTECTED] Subject: Re: [HACKERS] Suggestion for optimization
"Dann Corbit" <[EMAIL PROTECTED]> writes: > That's interesting. If Oracle is a MVCC database, how did they > manage to perform ANSI standard Isolation Levels? It seems it ought > to be impossible. There's an excellent introduction to MVCC and snapshot isolation in the PostgreSQL docs. See http://www2.no.postgresql.org/users-lounge/docs/7.2/postgres/mvcc.html >>------------------------------------------------------------------ I have read these documents (and some others) now. It seems that there is a serializable transaction level, and so the goal I was after can be reached anyway. So never mind. I am at peace again (and breathing a heavy sigh of relief). But I am a bit puzzled. How can a serializable transaction be performed in a MVCC system? I realize the Oracle does it, and also Postgresql, but I can't picture how that would work. <<------------------------------------------------------------------ ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
