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For those of you pushing your MySQL instances to higher levels, you’ll have realized at some point that all InnoDB tables share their indexing space into a single file (ibdata1, usually). This has several very bad outcomes: the ibdata1 file…
If you ever face a very slow MySQL process based on a very long insert file and you want to optimize it by unifying a lot of queries, you can do something like the following. Imagine you have a lot…
If you ever face an optimization issue in MySQL or MariaDB and want to know how to measure/benchmark the differences in execution between two queries, you should definitely know about the set profiling=1; command. Here is how it works: mysql>…
Sometimes I like to treat this blog as a personal one and write down things that might affect in fundamental ways our future… or at least my own future, potentially. Anyway, I’m currently living in Peru and had a series…
This is an easy procedure to import any MyISAM table that you would have in .myd, .myi and .frm format, into a local database. I assume you have MySQL server and a MySQL client on your local machine. First, identify…
Reference: http://www.cyberciti.biz/tips/recover-mysql-root-password.html (partly copied to avoid loosing source) # /etc/init.d/mysql stop Stopping MySQL database server: mysqld. # mysqld_safe –skip-grant-tables & [1] 5988 Starting mysqld daemon with databases from /var/lib/mysql mysqld_safe[6025]: started # mysql -u root Welcome to the MySQL monitor….
We’ve had reports about Dokeos creating problems when used with MySQL in strict mode. There’s a large topic development on the forum about that. The idea is that MySQL can be set to be more strict about the SQL syntax…
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