# Rake db:migrate execution error

**URL:** <https://www.ruby-forum.com/t/rake-db-migrate-execution-error/112133>\
**Category:** Rails\
**Created:** [August 15, 2007, 7:29pm UTC](https://www.ruby-forum.com/t/rake-db-migrate-execution-error/112133 "2007-08-15T19:29:16Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![teadub](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@teadub](https://www.ruby-forum.com/u/teadub)\
**Post date:** [August 15, 2007, 7:29pm UTC](https://www.ruby-forum.com/t/rake-db-migrate-execution-error/112133/1 "2007-08-15T19:29:16Z")

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Help a newbie please.

I have everything install according to [hivelogic.com](http://hivelogic.com) instruction but I  
get this…

Mycomp:~/Sites/music\_library Myname$ rake db:migrate  
(in /Users/Myname/Sites/music\_library)  
dyld: NSLinkModule() error  
dyld: Library not loaded: /usr/local/mysql/lib/mysql/libmysqlclient.  
15.dylib  
Referenced from: /usr/local/lib/ruby/gems/1.8/gems/mysql-2.7/lib/  
mysql.bundle  
Reason: image not found  
Trace/BPT trap

I have successfully installed mysql-2.7 via gem install for RoR mysql  
driver and configured database.yml  
development:  
adapter: mysql  
database: music\_library\_development  
username: root  
password: ###########  
host: localhost

PLEASE HELP A NEWBIE! Much Thanks in advance.

Sorry Hugh…newbie mistake.

My pre-requisite are as follow…

Mac OS 10.4.9  
MySQL 5.0.45  
rails 1.2.2  
ruby 1.8.5  
readline 5.1  
and build in Webrick for now.

NOTE: mysql-2.7 is a gem that allow rail to talk to mySQL a.k.a. MySQL  
native bind.

Hivelogic -

> **[Dan Benjamin](https://danbenjamin.com)**
>
> Dan Benjamin's personal website.

Thanks Hugh

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<div class="post-metadata">

**Author:** ![teadub](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@teadub](https://www.ruby-forum.com/u/teadub)\
**Post date:** [August 15, 2007, 10:09pm UTC](https://www.ruby-forum.com/t/rake-db-migrate-execution-error/112133/2 "2007-08-15T22:09:36Z")

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I hit this problem last time I installed RoR & etc on my mac.

I wrote a very short blog post about it. Maybe this will help you:  
[http://jesseclark.com/blog/?p=5](http://jesseclark.com/blog/?p=5)

-jc

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<div class="post-metadata">

**Author:** ![teadub](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/2acd7d/32.png) [@teadub](https://www.ruby-forum.com/u/teadub)\
**Post date:** [August 16, 2007, 6:11am UTC](https://www.ruby-forum.com/t/rake-db-migrate-execution-error/112133/3 "2007-08-16T06:11:59Z")

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Thanks Jesse,

/usr/local/mysql/lib/mysql/libmysqlclient.15.dylib

I found creating a folder call “mysql” after …/lib/ and copy  
“lidmysqlclient.15.dylib” to that folder then the rake execute work.  
However I have a few questions for you…

Do I copy and paste the following line by line in the terminal?

sudo install\_name\_tool \<= what is this? -change /usr/local/mysql/lib/  
mysql/libmysqlclient.15.dylib \< is this space? \> /usr/local/mysql/lib/  
libmysqlclient.15.dylib What is this for=?\>/usr/lib/ruby/gems/1.8/gems/  
mysql-2.7/mysql.bundle