MySQL User Group Meetings in Israel
This is a short note that the MySQL User Group Meetings in Israel are established (well, re-established after a very long period). Thanks to Eddy Resnick from Sun Microsystems Israel who has set up the...
View ArticleLOCK TABLES in MyISAM is NOT a poor man's tranactions substitute
I get to hear that a lot: that LOCK TABLES with MyISAM is some sort of replacement for transactions; some model we can work with which gives us 'transactional flavor'. It isn't, and here's why. When we...
View ArticleThe depth of an index: primer
InnoDB and MyISAM use B+ and B trees for indexes (InnoDB also has internal hash index). In both these structures, the depth of the index is an important factor. When looking for an indexed row, a...
View ArticleA MyISAM backup is blocking as read-only, including mysqldump backup
Actually this is (almost) all I wanted to say. This is intentionally posted with all related keywords in title, in the hope that a related search on Google will result with this post on first page. I'm...
View ArticlePersonal observation: more migrations from MyISAM to InnoDB
I'm evidencing an increase in the planning, confidence & execution for MyISAM to InnoDB migration. How much can a single consultant observe? I agree Oracle should not go to PR based on my...
View ArticleLimiting table disk quota in MySQL
Question asked by a student: is there a way to limit a table's quote on disk? Say, limit a table to 2GB, after which it will refuse to grow? Note that the requirement is that rows are never DELETEd....
View ArticleClik here to view.
Self throttling MySQL queries
Recap on the problem: A query takes a long time to complete. During this time it makes for a lot of I/O. Query's I/O overloads the db, making for other queries run slow. I introduce the notion of...
View ArticleClik here to view.
Auto caching tables
Is there a way to create a caching table, some sort of a materialized view, such that upon selecting from that table, its data is validated/invalidated? Hint: yes. But to elaborate the point: say I...
View ArticleGetting rid of huge ibdata file, no dump required
You have been told (guilty as charged), that the only way to get rid of the huge InnoDB tablespace file (commonly named ibdata1), when moving to innodb_file_per_table, is to do a logical dump of your...
View ArticleGetting rid of huge ibdata file, no dump required, part II
This post continues Getting rid of huge ibdata file, no dump required, part I, where I describe way of converting your single-tablespace InnoDB database into a file-per-table one, without the pain of...
View Article
