Support Oracle JDBC Adapter
Oracle does not support semi-colons in TRUNCATE TABLE statements and throws an `ORA-00911: invalid character` error. So use the same syntax with a JdbcOracleConnection as used by the OracleEnhancedAdapter.
Transactions should not be joinable
Changes to get specs to green.  Remove Ruby version related dotfiles to allow use of multiple Ruby versions
Merge pull request #253 from chancancode/non_joinable_transactions

Transactions should not be joinable
Merge pull request #255 from petergoldstein/feature/get_specs_to_green

Fix specs, remove Ruby dotfiles
Merge pull request #249 from avinmathew/master

Support Oracle JDBC Adapter