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Noons wrote:
> Serge Rielau wrote:
> If IBM really truly wants to criticize the locking mechanism
> of Oracle (and I'm the first one to say it should do so),
> then it is quite fitting that you folks LEARN what it is all about.
> And Steve's book is the only reference out there that completely
> explains all those things.
> You may take the pedantic approach of ignoring it, but it will
> be at the cost of credibility of any IBM criticism, believe me.
Noons, where is IBM critizing multi-version read consistency?
Speaking for myself (which is all I can do) please point me to where I
use the words "better" or "worse"? There is no such thing as a free
lunch however, and that is what is often forgotten by some posters.
And if pointing that out is criticism, I'll carry that burden.
> I find no downsides in Oracle's row locking. Multi-versioning may have
> some, but that is separate from true row locking. Of course, you
> may think that a mechanism that implies and needs lock escalation
> is superior. I don't think so and there are a lot of people
> out there who share my opinion.
I don't think it's superior. I don't think it's inferior either. It's
price-worthy. As technology moves on downsides on either side get worked
on. DB2 from release to release get's more subtle about locking while
Oracle is reliefing the burden of managing rollback segments.
>>Isn't it ironic that if SQL Server 2005 ever ships it will be the
>>mainstream DBMS supporting all major isolation levels?
> There is one thing about SS that is truly endearing it to me:
> its ability to use any language for SPs.
CLR? You mean DB2 UDB V8.2 for LUW then, available since , uh 1/2 year.
SQL Server 2000 does not do that and let's talk about SQL Server 2005
when it ships.
Hard to believe you falling for MS vapor ware ;-)
> Not just T-SQL.
> That is a great idea and it should be adopted by others.
> And before anyone mentions the bleeding obvious: no, Java is a
> piss-poor language for data manipulation and I hate having to
> be stuck with it in Oracle if I want to use aything else than PL/SQL.
https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?pkgid=&S_SRCID=db2udbese82&source=db2udbese82&S_TACT=104AH+W42&S_CMP=&S_PKG=dl&s=c<ype=select&l=English+US&mtype=input&m=download&id=2005-01-28+13%3A18%3A49.083531R&fam=&cat=database
Cheers
Serge
-- Serge Rielau DB2 SQL Compiler Development IBM Toronto LabReceived on Tue Feb 08 2005 - 07:47:52 CST