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Conference ulysse::rdb_vms_competition

Title:	DEC Rdb against the World

Moderator:	HERON::GODFRIND

Created:	Fri Jun 12 1987
Last Modified:	Thu Feb 23 1995
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1348
Total number of notes:	5438

744.0. "2PC implementations" by ROM01::FERRARIS (Discover wildlife... have kids!) Mon Sep 24 1990 16:23

    I scanned this notesfile looking for info about 2PC implementations,
    but I only found one note dated Oct 1989. One year ago, nobody seemed
    to have anything but rudimental. Now that Rdb 4.0 is quite ready to
    ship, it would be useful to have an update, and an evaluation of
    pros/cons in comparison with our implementation.

    I would be interested in Ingres and Sybase, as I know that Oracle will
    have 2PC in V7.0 (i.e. who knows when? :-)). Does anybody have this
    information? Thanks in advance.

    Cheers,

    	Massimiliano

T.R	Title	User	Personal Name	Date	Lines
744.1	What I've learnd in a Codd/Date seminar	SUOSW3::KAISER	working...	`Mon Sep 24 1990 16:55`	11
	I've been on a Codd&Date seminar in Munich this year, where Colin White did a comparison of various DBMS. Here's a list of systems that have 2PC: - CA-DB:STAR (Computer Associates) - NonStop/SQL (Tandem) - Ingres/Star (RTI) (has a 'user managed 2PC' ?) - SQL Server (Sybase, Microsoft) (2PC can be implemented using DB library calls) Hope that helps -Hans
744.2	Any more info?	ROMSLS::FERRARISMA	Murphy was an optimist	`Tue Sep 25 1990 11:36`	9
	Thanks Hans for your reply. Do you have something more specific (i.e. technical characteristics). For exaample, I believe that "user managed 2PC" means that the user has to write his own coordinator and manage the various actions involved in 2PC. Is this true? Does anybody else have this kind of information? ADVthanksANCE, Max
744.3	Yes, as I understand it	SUOSW4::KAISER	working...	`Wed Sep 26 1990 12:54`	7
	>> For exaample, I believe that "user managed >> 2PC" means that the user has to write his own coordinator and manage >> the various actions involved in 2PC. Is this true? Yes, maybe someone who knows Ingres or ULTRIX/SQL can tell us more about this. -Hans