Four Options For Oracle DBA Tuning Training

Four Options For Oracle DBA Tuning Training


Oracle DBAs are constantly solving problems... mysteries. That requires a constant knowledge increase. I received more personal emails from my Oracle DBA Training Options Are Changing posting than ever before. Many of these were from frustrated, angry, and "stuck" DBAs. But in some way, almost all asked the question, "What should I do?"

In response to the "What should I do?" question, I came up with (more...)

Oracle DBA Training Options Are Changing

Oracle DBA Training Options Are Changing


Training options for Oracle Database DBAs are changing. Generally, I don't think they are for the better. Companies don't value Oracle Database Administrators like they used to. And, it shows in the lack of their professional development investment.

When I travel a long way from home, I tend to get very reflective about life, death and beyond. On my way home from teaching an onsite two-day Oracle performance tuning (more...)

How The Oracle Database Determines Wait Time When It’s Not Set

Have you ever wondered how the Oracle Database 12c (and earlier versions) determines the wait time when it has absolutely no control over how long the wait will take? If so, then read on!

The Back Story


Using wait time is part of an Oracle Time Based Analysis (OTBA). While Oracle process CPU consumption is a big part of the analysis, the other category is non-idle wait time.

You can see the two categories of (more...)

The LGWR Three Second Rule. Really?

Does the Oracle Database 12c Log Writer Really Sleep For Three Seconds?

I have learned the part of Oracle Database performance tuning is checking if what you have been taught is actually true. What I'm writing about today has been done before in Oracle Database 10g and 11g, but I wanted to document this using 12c.

When I was first learning about the Oracle Database process architecture, the instructor said there are a number of (more...)

It’s All About CPU But There Is NO CPU Bottleneck! What?

It's All About CPU But There Is NO CPU Bottleneck...


Diagnosing Oracle Database performance is like solving a puzzle. But what I really enjoy is coming up with performance solutions that are anti-intuitive for most people. You know, the ones when you can see people stop talking and actually think, "Why would Craig say that!?" In this posting, I delve into one of these situations.

The Situation


Just over a month ago I received (more...)