RE: MySQL versus Oracle

> MySQL doesn't claim to be ACID

Here's a quote from the 4.0 manual about current features: "The table handler InnoDB is now offered as a feature of the standard MySQL server, including full support for transactions and row-level locking."

InnoDB is also available starting with version 3.23.5.

Here's a quote regarding future 4.1 features: "Mission-critical, heavy-load users of MySQL will appreciate the additions to our replication system and our online hot backup. Later versions of 4.0 will include fail-safe replication; already in existing 4.0.0, the LOAD DATA FROM MASTER command will soon automate slave setup. The online backup will make it easy to add a new replication slave without taking down the master, and have a very low performance penalty on update-heavy systems."

Mene, mene, tekel, ufarsin... (?)

-----Original Message-----
Sent: Friday, May 31, 2002 4:20 PM
To: Multiple recipients of list ORACLE-L

• "Weaver, Walt" <wweaver_at_rightnow.com> on 05/31/02 13:59:22 -0800

> If there's only one user accessing it, yes.
>
> --Walt
>
> -----Original Message-----
> Sent: Friday, May 31, 2002 3:44 PM
> To: Multiple recipients of list ORACLE-L
>
>
> a) It's blindingly fast as a single user database, faster then oracle.
>
> Really? Even with a 30 million record table?

Depends on what they are doing. MySQL doesn't claim to be ACID, just fast. If multiple users are reading a table that isn't configured for locks then it could be faster than Oracle. The overhead and complexity introducted into Oracle by rollback handling is a major slowdown for anythng the database does.

This is mainly a matter of applying a tool in the way it was designed to be used. MySQL is intended for primarily readaccess  databases or smaller ones where the less granular locking is not so much of a problem.

--
Steven Lembark                              2930 W. Palmer
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