Redmine

I have installed redmine 2.1.2.
I have used it for 10 days.
Today, my server restarted. When I startup this service, I got a error.
Mysql service is ok. I have used a tool to connect to mysql server. It's ok.

Pls, help!

D:\redmine-2.1.2>
D:\redmine-2.1.2>ruby script/rails server webrick -e production
=> Booting WEBrick
=> Rails 3.2.8 application starting in production on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting

C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_record/connectio
n_adapters/mysql_adapter.rb:411:in `real_connect': Can't connect to MySQL server
on '192.168.0.8' (10060) (Mysql::Error)
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/mysql_adapter.rb:411:in `connect'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/mysql_adapter.rb:131:in `initialize'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/mysql_adapter.rb:38:in `new'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/mysql_adapter.rb:38:in `mysql_connection'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:309:in `send'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:309:in `new_connection'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:319:in `checkout_new_connect
ion'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:241:in `checkout'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:236:in `loop'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:236:in `checkout'
from C:/Ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:233:in `checkout'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:96:in `connection'
from C:/Ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:95:in `connection'
from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_pool.rb:404:in `retrieve_connection'

from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_specification.rb:170:in `retrieve_co
nnection'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/connection_adapters/abstract/connection_specification.rb:144:in `connection'

from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/model_schema.rb:308:in `clear_cache!'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activerecord-3.2.8/lib/active_rec
ord/railtie.rb:97:in `_callback_before_3'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:418:in `_run__1002784155__prepare__4__callbacks'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:405:in `send'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:405:in `__run_callback'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:385:in `_run_prepare_callbacks'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:81:in `send'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-3.2.8/lib/active_su
pport/callbacks.rb:81:in `run_callbacks'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/actionpack-3.2.8/lib/action_dispa
tch/middleware/reloader.rb:74:in `prepare!'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/actionpack-3.2.8/lib/action_dispa
tch/middleware/reloader.rb:48:in `prepare!'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/applicat
ion/finisher.rb:47
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/initiali
zable.rb:30:in `instance_exec'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/initiali
zable.rb:30:in `run'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/initiali
zable.rb:55:in `run_initializers'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/initiali
zable.rb:54:in `each'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/initiali
zable.rb:54:in `run_initializers'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/applicat
ion.rb:136:in `initialize!'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/railtie/
configurable.rb:30:in `send'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/railties-3.2.8/lib/rails/railtie/
configurable.rb:30:in `method_missing'
        from D:/redmine-2.1.2/config/environment.rb:14
        from D:/redmine-2.1.2/config.ru:4:in `require'
        from D:/redmine-2.1.2/config.ru:4
        from C:/Ruby187/lib/ruby/gems/1.8/gems/rack-1.4.1/lib/rack/builder.rb:51
:in `instance_eval'
        from C:/Ruby187/lib/ruby/gems/1.8/gems/rack-1.4.1/lib/rack/builder.rb:51
:in `initialize'
        from D:/redmine-2.1.2/config.ru:1:in `new'
        from D:/redmine-2.1.2/config.ru:1