I’m sure that someone reading this will ask, “how did you not know that?”. But sometimes the simplest things come to us late in the game while others knew it early on.
I had a developer ask me an interesting question recently. He was working on a problem where numeric values were stored in a table but when he queried that table in PL/SQL Developer, it would show trailing zeroes after the last digit. He wondered if this was contributing to the problem he was trying to debug. The developer needed to know if Oracle was storing those trailing zeroes.
After you've tested your disk, your memory, ran all sorts of virus and malware search and destroy tools and every test comes up clean.... and you still have system crashes! Well you might just have a driver problem. But what driver? There may be a hundred or more.
Oracle Enterprise Manager 12c was released October 2011 and introduced a complete rewritten framework for monitoring and managing Data Centre components.