rsim/oracle-enhanced — pull request #529 by mcmorgan (2014-12-05 20:52:59+00:00)
Title: Read SYSTEM password from ENV ORACLE_SYSTEM_PASSWORD optionally

This is useful when running scripts and no user is around to enter
a system password value. In particular, for various CI server setups.

Usage Example:

```
ORACLE_SYSTEM_PASSWORD=secret rake db:migrate
```