Seems there is some interest in running MySQL as a backend for (classic) ASP based sites, at least looking at recent posts on DevShed forums.
As questions are quite similar and I've not found a good ASP+MySQL tutorial on the web I'm posting a short example here
Here is my snippet:

1. dim adoConn
2. dim adoRS
3. set adoConn = Server.CreateObject ( "ADODB.Connection" )
4. set adoRS = Server.CreateObject ( "ADODB.Recordset" )
5. adoConn.CursorLocation = 3
6. 'adUseClient
7. adoConn.Open "DRIVER={MySQL ODBC 3.51 Driver};SERVER=localhost;DATABASE=users;UID=root;PWD=; OPTION=16427"
8. adoRS.ActiveConnection = adoConn
9. if adoConn.errors.count = 0 then
10. adoRS.Open "Select ...", adoConn
11. .....
12. adoRS.Close
13. else
14. response.write ( "ERROR: Couldn't connect to database" …

Great snippet on Dynamic SQL in stored procedures from MySQLForge!!!

So, before hopping on my plane from Seattle to Chicago on Tuesday, I met with one of the C# compiler developers at Microsoft (thanks to CJ for arranging!) and this was indeed a very interesting chat.

You may know that 40% of the MySQL userbase uses the Windows platform in one form or another. What you may not know if you don't use Microsoft stuff, is that Microsoft is actually surprisingly open about many things; you can get inside info about what they're working on, documentation on nearly everything, and so on. Basically, one of the few things not open is their sourcecode ;-). I'll grant you that's a key aspect in many cases, but still... consider that Google uses open source and releases some too (see code.google.com) but is otherwise a very closed company. Just to give a crude comparison how the world is not just black&white.
Anyway, talking to this developer was just one programmer talking with another (he used to work …

The second thing on my list coming away from the MySQL Users Conference (first was a question about limits in mysqldump) was to do a writeup on how to use Linux LVM (Logical Volume Manager) to take quick snapshots of your database. Many folks are using this as an alternative to the tools provided with MySQL. It's a good choice for a backup when you need to backup in order to restore the entire database from files.

Taneli has already done a write-up of the steps to complete this process, I want to add in a few things:

LVM not a True Online Backup

LVM doesn't do a true online backup, although it gets close. The actual LVM snapshot command is fast, but to get a good copy of your …

I want to thank Jay Pipes for showing me MySQL Forge. It was nice to finally meet him at the MySQL Users Conference. At his request, I posted my backup script to MySQL Forge, which covers a lot of things that are missing from the mysqldump utility, such as properly backing up a slave (with the relative master's log file & position). I've found this script very useful to perform general backups as well as using this to build a new slave.

In MySQL 5.1, a new engine has been provided that assists with the management and use of delimited data found in common flat files. Robin Schumacher takes a quick look at this new engine, along with the features and benefits it provides users of MySQL.

tim bray coined MARS: it stands for ?mysql + apache + ruby + solaris.? (get the shirt.)

bill de hóra proposed MADD: ?mysql + apache + django + debian.?

when forwarding the above to an internal mailing list at mysql, i proposed MAUDE: ?mysql + apache + ubuntu + django + eclipse.? the logo would be a picture of bea arthur, of course.

but mårten mickos, ceo of mysql, came up with MARTEN: ?mysql + apache + ruby + tomcat + eclipse + nagios.?

or would that be åpache?

I went to Microsoft with Arjen the other day. We talked with Eric Lippert about some new features of C# 3.0 and how MySQL might integrate itself more deeply into the Microsoft Development Environment.

More details if anyone makes noise about being interested.

© cjcollier for C.J.'s WordPress of studlyness, 2006. | Permalink | 5 comments

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SHOW ENGINE INNODB STATUS shows current InnoDB status, including deadlocks. I was thinking a while back it would be nice to have a log of all deadlocks. Well, I got my answer:

http://dev.mysql.com/doc/refman/5.0/en/innodb-monitor.html

To cause the standard InnoDB Monitor to write to the standard output of mysqld, use the following SQL statement:

CREATE TABLE innodb_monitor (a INT) ENGINE=INNODB;

The monitor can be stopped by issuing the following statement:

DROP TABLE innodb_monitor;