Blog Aggregator - Amardeep Sidhu

Now that we understand how to set up maintenance windows, let’s take a look at 10G Grid Control’s (Enterprise Manager), default statistics gathering options. It is important that we understand what the options are and how to configure them. Only then can we determine if the automatic and manually executed statistics gathering jobs are configured to meet the needs of our individual database applications.

Now that we have a general understanding of the important role that statistics play in query optimization, let’s forge ahead with our discussion on statistics administration best practices. In this blog, we’ll learn how to configure 10G Grid Control R2’s maintenance windows to tailor them to meet our application’s business processing requirements. In the next blog, we’ll examine the optimizer statistics gathering default options page and discuss what some of the recommended settings should be.

In the last blog of this series, we’ll complete our discussion on 10G Grid Control R2 optimizer statistics administration by learning how to schedule optimizer statistics gathering jobs manually.

10G Grid Control provides an optimizer statistics administration panel that allows administrators to gather, restore, delete, lock and unlock object statistics. Before we learn how to use 10G Grid Control R2’s object statistics administrations panels, let’s take a quick look at object statistics and find out why they are so important to effective query optimization.

Part 1 of this three part series will provide a high-level overview of optimizer statistics. Part 2 will focus on maintenance windows that control when automatic statistics gathering jobs run. In part 3, we’ll learn how to use 10G Grid Control R2 to ensure that the optimizer has the correct statistical information it needs to generate optimal access paths.

We are moving forward with our ASM evaluation. We recently held a facilitated brainstorming session that was led by Giant Eagle’s ace data administrator Jim McQuade. Jim has extensive training and experience in meeting management and did an excellent job leading the meeting. I thought I would spend a few minutes on effective meeting management and show you the rough draft of our high-level ASM test plan.

The Oracle community lost a valued contributor. Oracle author, presenter and educator Lex de Haan passed away after a battle with cancer. I intended to write about our Giant Eagle ASM test plan but it is important for me to take a few minutes to talk about Lex first. Look for my blog on our test plan in a day or two.