Archive for May 2010

SSMS SQLCMD Mode: a half done job?

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I’ve always been aware of SQLCMD mode in SQL Server Management Studio but until a few days ago I never considered using it. So what is SQLCMD? SQLCMD is a command line application that comes with Microsoft SQL Server, and exposes the management features of SQL Server. It allows SQL queries to be written and […]

MySQL client ran out of memory

I’ve been building utilities with PHP and MySQL command-line tools to clone databases. I ran into an issue when exporting data from multi-gigabyte tables using the mysql client program. mysql: Out of memory (Needed 4179968 bytes) ERROR 2008 (HY000) at line 1: MySQL client ran out of memory The fix for this is easy; just use […]

Check disk space with Bash

Now I’m working mainly with Linux and MySQL I’ve had to learn how to accomplish basic tasks in entirely new ways. As a DBA I like to keep an eye on disk space. I wanted something like my Check disk space with Powershell script, but this only works with Windows, so naturally I turned to […]

Running multiple instances of MySQL

It’s reasonably easy to run multiple instances of MySQL with the mysqld_multi bash script. This can be really useful in development environments where you need to give several developers their own instance. To install multiple Microsoft SQL Server instances we have to get the install DVD and go through a laborious series of wizards. MySQL […]

Unknown table engine ‘InnoDB’‏

I ran across this error today whilst upgrading to an instance of MySQL 5.4. Unknown table engine ‘InnoDB’‏ I executed the following command at the MySQL client to see the available storage engines. ?View Code MYSQLSHOW ENGINES; This only listed the following table types; MRG_MYISAM MyISAM BLACKHOLE CSV MEMORY FEDERATED ARCHIVE Sure enough, No Innodb […]