Regular readers of this blog ( hello Mum) will have noticed that I’ve been a bit quiet lately.
Having tired of my life of leisure, I now have a proper job and have consequently been a little bit busy.
I have though, had time to reflect on the question of Oracle database upgrades and why they are never ever standard.
“We’ve decided to upgrade the database”. Those words are bound to strike equal amounts of anticipation and abject terror into the heart of any DBA…or at least, any DBA who has gone through an upgrade before.
To be fair, it’s not the upgrade itself that is going to cause the problem, it’s all of the misconceptions that come with it.
The CIO/IT Manager/Project Manager is almost bound at some point to come out with one of the following gems :
“We don’t need to test, the application code will still work in exactly the same way”
“We need to upgrade/move our servers/Application/Operating System anyway so we can do it all at the same time to minimize downtime.”
“According to the salesman Oracle can now make the tea, so it must be true.”
My personal favourite is from a person who shall remain nameless :
“We want to be fast-followers. X team is upgrading their database in July so we should be done by June”. (more…)