rails3 rake db:migrate error

Question

Helo,

I am trying to run rake db:migrate for my rails 3 application using mysql2 gem. But it ended up with below error. Do you have any idea? Thanks

WARNING: This version of mysql2 (0.3.7) doesn't ship with the ActiveRecord adapter bundled anymore as it's now part of Rails 3.1
WARNING: Please use the 0.2.x releases if you plan on using it in Rails <= 3.0.x
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/version.rb:4: warning: already initialized constant MAJOR
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/version.rb:5: warning: already initialized constant MINOR
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/version.rb:6: warning: already initialized constant BUILD
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/version.rb:3: warning: already initialized constant NUMBERS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/version.rb:9: warning: already initialized constant VERSION
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake.rb:26: warning: already initialized constant RAKEVERSION
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/early_time.rb:17: warning: already initialized constant EARLY
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/alt_system.rb:32: warning: already initialized constant WINDOWS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/application.rb:28: warning: already initialized constant DEFAULT_RAKEFILES
WARNING: Possible conflict with Rake extension: String#ext already exists
WARNING: Possible conflict with Rake extension: String#pathmap already exists
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/task_arguments.rb:73: warning: already initialized constant EMPTY_TASK_ARGS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/invocation_chain.rb:49: warning: already initialized constant EMPTY
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:10: warning: already initialized constant RUBY
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_utils.rb:84: warning: already initialized constant LN_SUPPORTED
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/dsl_definition.rb:143: warning: already initialized constant Commands
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:44: warning: already initialized constant ARRAY_METHODS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:47: warning: already initialized constant MUST_DEFINE
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:51: warning: already initialized constant MUST_NOT_DEFINE
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:55: warning: already initialized constant SPECIAL_RETURN
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:61: warning: already initialized constant DELEGATING_METHODS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:364: warning: already initialized constant DEFAULT_IGNORE_PATTERNS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake/file_list.rb:370: warning: already initialized constant DEFAULT_IGNORE_PROCS
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake.rb:64: warning: already initialized constant FileList
/Users/Sako/.rvm/gems/ruby-1.9.2-p290@global/gems/rake-0.9.2/lib/rake.rb:65: warning: already initialized constant RakeFileUtils
rake aborted!
stack level too deep

What version of the Rails gem are you using? – Alex Sep 17 '11 at 14:03 — Alex, Sep 17 '11 at 14:03

score 1 · Accepted Answer · answered Sep 17 '11 at 14:15

1

The answer is in the error message:

 WARNING: Please use the 0.2.x releases if you plan on using it in Rails <= 3.0.x

Just fix the mysql version in your gemfile :)

answered Sep 17 '11 at 14:15

apneadiving

114,565
26
219
213

hi apneadiving, thanks for your suggestion. I have downgraded mysql gem to 0.2.7 , but upon running rake db:migrate it asked me 0.3.7 and recommended me to run bundle install.. back to zero – iwan Sep 17 '11 at 14:27
What are your rails and arel versions? – apneadiving Sep 17 '11 at 14:34
i've added gem 'mysql2', '0.2.7' inside GemFile, and the first 2 lines of warning disappeared, however subsequent error lines are still the same .. :( – iwan Sep 17 '11 at 23:05
hi apneadiving, i found the answer here http://stackoverflow.com/questions/3456304/rake-aborted-stack-level-too-deep i.e. by running bundle exed rake db:migrate, the cause is incompatible ruby version.. it is really painful to install mysql in mac (maybe only for me). THANKS apneadiving – iwan Sep 17 '11 at 23:21
I thought you were using this command already :) consider accepting this answer if it has been helpful. – apneadiving Sep 18 '11 at 07:17

score 0 · Answer 2 · answered Oct 08 '11 at 14:00

0

check GemFile and just edit the rails version from 3.0.0 to 3.1.0 and don't care about mysql version, keep it 0.3.7, you don't have to downgrade it

answered Oct 08 '11 at 14:00

Azzurrio

1,330
1
17
35

rails3 rake db:migrate error

2 Answers2