Thank you all for the responses, This information is useful in determining what direction to take in designing the application's use of the MySQL database. I am still a bit unsure how a log based reconsiliation works when the system crashes (using MyISAM tables). Does a lengthy reconstruction have to take place? Can it be automated (so it occurs when the db is restarted)? What pitfalls must be avoided?
Thank you, Wynne Crisman patternWare Systems, Inc. -----Original Message----- From: Michael Widenius [mailto:[EMAIL PROTECTED] Sent: Thursday, March 27, 2003 6:49 AM To: Wynne Crisman Cc: [EMAIL PROTECTED] Subject: MyISAM rebuilding questions Hi! >>>>> "Wynne" == Wynne Crisman <[EMAIL PROTECTED]> writes: Wynne> I am trying to determine what would cause my needing to rebuild Wynne> an MyISAM table in MySQL 4.0.x? You should not have to rebuild any tables just to upgrade to MySQL 4.0 from 3.23. The MyISAM format has not changed in any way between releases. Wynne> I also would like to know how I can minimize the time necessary Wynne> to get the MyISAM table up and running under MySQL 4.0.x? zero time for tables without fulltext. Some time for tables with fulltext indexes. Wynne> I have read the Wynne> http://www.mysql.com/newsletter/2002-12/a0000000091.html Wynne> document which states that tables with lots of data can be difficult to Wynne> rebuild and would be better served using InnoDB, but InnoDB does not Wynne> support fulltext searches. I don't know of any problems in rebuilding an MyISAM table: Just do: OPTIMIZE TABLE table_name; or ALTER TABLE table_name type=myisam; It's true that MySQL 4.0 has better fulltext capabilities and to get these activated for a table you need to rebuild the tables that has fulltext support. The old tables will however work as before even if you don't rebuild them (but in this case you will probably not be able to use boolan search on them until you have rebuilt them). Note that fulltext rebuilds are MUCH faster in 4.0 so it should not take long to do the rebuilds. Wynne> Thank you for any assistence, Wynne> Wynne Crisman Wynne> patternWare Systems, Inc. Regards, Monty -- MySQL 2003 Users Conference -> http://www.mysql.com/events/uc2003/ __ ___ ___ ____ __ / |/ /_ __/ __/ __ \/ / Mr. Michael Widenius <[EMAIL PROTECTED]> / /|_/ / // /\ \/ /_/ / /__ MySQL AB, CTO /_/ /_/\_, /___/\___\_\___/ Helsinki, Finland <___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
