Production change control plan
Consider the following points to help reduce the production service outage:
Since production change control windows are usually small, and are typically scheduled during off-hours, extra attention to detail is required to compensate for the late hours.and disruption of routine. Upgrade plans should should be both explicitly documented and easy to follow. For each step:
Describe exactly what to do in clear, plain language, so the person implementing that step does not have to take time to analyze the wording.
Include a quick test to verify that this step was completed.
Include contingency procedures describing how to troubleshoot failure, back out the change, or redo the change.
Describe conditions to help the team decide if the entire migration has reached a critical impasse and must be backed out.