Rails 4 not executing rake tasks

[avinmathew]

I've been trying to update a Rails 3 application to Rails 4.0.2 and the last piece in the puzzle is getting it working with Oracle Enhanced 1.5.1. I've been previously using Rails 3.2.16 and Oracle Enhanced 1.4.3 without any trouble. However, I can't even execute basic rake commands on Rails 4, Oracle Enhanced 1.5.

For example, rake db:drop will simply print:

DEPRECATION WARNING: This database tasks were deprecated, because this tasks should be served by the 3rd party adapter. (called from mon_synchronize at ~/.rbenv/versions/2.1.0/lib/ruby/2.1.0/monitor.rb:211)

but it doesn't drop tables as it used to with 1.4. I believe the warning is originating from https://github.com/rails/rails/blob/4-0-stable/activerecord/lib/active_record/tasks/oracle_database_tasks.rb#L7

I had a look at https://github.com/rsim/oracle-enhanced/blob/master/lib/active_record/connection_adapters/oracle_enhanced.rake#L47 and defined?(drop_database) is nil when I run it.

[avinmathew]

Doing a bit more digging, it looks like Rails will remove oracle_database_tasks.rb from 4.1: rails/rails@42d0d18

It also looks like Rails 4 doesn't use the global create_database and drop_database methods anymore and now requires registration process (register_task in DatabaseTasks). My current assumption is that Oracle Enhanced isn't hooking in correctly to Rails 4 DatabaseTasks correctly and that's why it's not working.

Interestingly enough, if I run using JRuby rather than MRI, and also include activerecord-jdbc-adapter in addition to Oracle Enhanced, everything seems to run fine. I'm guessing since ARJDBC defines compatible tasks for Oracle: https://github.com/jruby/activerecord-jdbc-adapter/blob/master/lib/arjdbc/tasks/oracle_database_tasks.rb

[yahonda]

Thanks for the report.

create_database was removed by rails/rails@e678d41#diff-28a5ae383b291583c513ad8eeed99a3a and also drop_database was remove dby rails/rails@bca52b0#diff-28a5ae383b291583c513ad8eeed99a3a

Now I'm taking a look at this issue, if you have pull requests available it would be welcomed.

[yahonda]

Closed as #404 merged to master. Thanks!