BackgrounDRb causing trouble, or you have a potential fix? Why not submit the bug report here . You can also submit potential patches that fix known bugs or add exciting features to the above trac url.
Also, if you are using older version of BackgrounDRb and having a problem, why not upgrade to latest code from git, your bug might have been fixed there.
Since BackgrounDRb has feature of thread pools, which allows users to execute tasks
concurrently, we are using allow_concurrency = true in ActiveRecord model objects.
This has been known to create some issues with Oracle database Adapters. If you are sure of
what you are doing and don’t need thread pool feature, you can go ahead and remove allow_concurrency = true
from BackgrounDRb code and it should work.