# Unable to load driver 'Mysql' (underlying error: uninitializ

**URL:** <https://www.ruby-forum.com/t/unable-to-load-driver-mysql-underlying-error-uninitializ/162719>\
**Category:** Ruby\
**Created:** [March 13, 2009, 6:09am UTC](https://www.ruby-forum.com/t/unable-to-load-driver-mysql-underlying-error-uninitializ/162719 "2009-03-13T06:09:55Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![arunvoip](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/e8c25b/32.png) [@arunvoip](https://www.ruby-forum.com/u/arunvoip)\
**Post date:** [March 13, 2009, 6:09am UTC](https://www.ruby-forum.com/t/unable-to-load-driver-mysql-underlying-error-uninitializ/162719/1 "2009-03-13T06:09:55Z")

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Hi,  
I’m a freser to ruby and i’m trying to workout certain database related  
examples using dbi. But when i run the file i receive an error :

Unable to load driver ‘Mysql’ (underlying error: uninitialized constant  
DBI::DBD::MySql) (DBI::InterfaceError)  
from /usr/lib/ruby/1.8/monitor.rb:242:in `synchronize' from /home/arunkumar/.gem/ruby/1.8/gems/dbi-0.4.1/lib/dbi.rb:236:in`load\_driver’  
from /home/arunkumar/.gem/ruby/1.8/gems/dbi-0.4.1/lib/dbi.rb:154:in  
`_get_full_driver' from /home/arunkumar/.gem/ruby/1.8/gems/dbi-0.4.1/lib/dbi.rb:139:in`connect’

The error occurs from the line given to connect the mysql database. ie.  
dbh = DBI.connect(“DBI:MySql:Project:localhost”,  
“username”, “password”)

Can anybody please help me to solve this problem.

Regards  
Arun K. .C.M.