How do you automate change and release management for PL/SQL Language?

This post on “How to design a release management strategy for Oracle pl/sql? ” was my question recently.

Is there any tools you may be using within your big projects for this need(maybe some opensource tools) and would you share your strategies?

These are perceived as the weak side of this great development environment and it is known there are also big PL/SQL based projects like Advanced Replication,  Applications module, Workflow and Apex inside Oracle. But where are the tools that can be easily found and used for other development environments for PL/SQL?