I followed the instructions here: http://crazytoon.com/2007/07/23/mysql-changing-runtime-variables-with-out-restarting-mysql-server/ but that seems to only set the threshold.
Do I need to do anything else like set the filepath?
According to MySQL's docs
If no file_name value is given for --log-slow-queries, the default name is
host_name-slow.log. The server creates the file in the data directory unless
an absolute path name is given to specify a different directory.
doesn't indicate any log file path and I don't see any slow query log file on my server...
Looks like I'm using server version 5.0.77, so I needed to do:
SET GLOBAL log_slow_queries = 1;
but I get: ERROR 1238 (HY000): Variable 'log_slow_queries' is a read only variable
I assume I'm going to need to restart the server and have log_slow_queries set in my config?