I forgot to mention, we have Oracle in-house, and the machine the MySQL database will reside on is a 2 proc Sun box with 1.5G of RAM. The Oracle databases reside on a 16 proc Sun box with 10G of RAM.
The decision to go or not go with MySQL is not based on money, it needs to be based on performance. We currently use Oracle in-house for everything, but its speed hasn't been its selling point, and for this application we need lots of speed. That is why we are leaning toward MySQL, but were not sure if it could keep up with the addition of the user community. I had one other question, how much of a performance hit would we take with MySQL if we connected through MyODBC? Thanks again, Brad -----Original Message----- From: walt [mailto:[EMAIL PROTECTED]] Sent: Friday, May 17, 2002 11:47 AM To: Brad Teale Cc: '[EMAIL PROTECTED]' Subject: Re: Real-time data warehousing Brad, We're in process of evaluating mysql vs our current Oracle 8 system. Importing data is much faster in mysql than oracle according the numbers we're getting. However, from our benchmarking, Oracle seems to be faster on the queries (no writes to db during query time). The table were running our queries against has 46 coulmns and 14 indexes (some columns indexed twice in multi-column indexes). All queries are based on indexed columns. We've also run into some issues trying to delete indexes, 14+ hours before we killed the db and reloaded data, but I may be something stupid. One note on Oracle, $30,000+ for a single processor licence. From our testing, it looks like the bottleneck is disk I/O not processing power. With Oracle, you have better control over which disks your data resides on which lets you balance disk I/O better. However, for $30k, you can buy 10 15,000 rpm drives, stripe them, and then buy another server for replication of data and still have $25K left over. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
