Problem regarding Sybase configuration with Aptana IDE

Hi!!,
     I am using Apatana IDE for Rails development. I have installed
SQL explorer plugin and connected to "Sybase"database. But through
database.yml I am not able to connect to server.
In fact it gives error while running WEBrick server.

Error is like this :------>
[code]
3109
=> Booting WEBrick...
/usr/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/
connection_adapters/abstract/connection_specification.rb:210:in
`establish_connection': database configuration specifies nonexistent
sybase adapter (ActiveRecord::AdapterNotFound)
  from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
active_record/connection_adapters/abstract/connection_specification.rb:
202:in `establish_connection'
  from /usr/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/
active_record/connection_adapters/abstract/connection_specification.rb:
195:in `establish_connection'
  from /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/initializer.rb:
229:in `initialize_database'
  from /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/initializer.rb:88:in
`process'
  from /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/initializer.rb:43:in
`send'
  from /usr/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/initializer.rb:43:in
`run'
  from ./script/../config/../config/environment.rb:13
  from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`gem_original_require'
   ... 12 levels...
  from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
`require'
  from ./script/server:3
  from -e:4:in `load'
  from -e:4[/code]

And mine database.yml file is ---------->

[code]

# MySQL (default setup). Versions 4.1 and 5.0 are recommended.

Maybe useful the following info.

http://wiki.rubyonrails.org/rails/pages/HowToSetupSybaseAdapterOnRails

development:
   adapter: sybase
   database: griffin
   host: 192.168.0.13
   port: 5006
   username: sa
   password:
   numconvert: true

no need port field.
you have to write server name which wrote in interfaces file on host
field.

like this .

interfaces file ($SYBASE/interfaces)

SYBASE_RAILS
        master tcp ether localhost 5000
        query tcp ether localhost 5000

development:
   adapter: sybase
   database: griffin
   host: SYBASE_RAILS
   username: sa
   password: sa_pass
   numconvert: true

-- hiro