ALL POSTS

Diagnosing Oracle Performance Problems on *nix

One day I came up with the following neat idea. Start a second listener, on a different port, calling it the emergency listener. Then renice the listener process with higher priority. Now, every time I connect to the database via my emergency listener, my connection gets higher priority, and thus feels like there’s no problem with the database’s resource use.

There is one little caveat however. You need to either have access to root, or have a nice SA that will add renice to your sudoers file .

The Answer to Free Memory, Swap, Oracle and Everything

I have submitted an abstract for my new presentation about linux/unix memory and Oracle to the Rocky Mountain Oracle Users Group for the Training Days in Denver on February 14-15, 2007. I pilot tested it at the Ottawa Oracle User Group in June. The feedback was good and since then I have kept developing the presentation. Soon to be submitted for HotSos 2007.

Using Data as a Tool

IT programs only teach you the programming and software architecture perspective. In DBA work, even when scripting, you have to consider the data as a tool. I’ll show you what I mean.

Basic I/O Monitoring on Linux

Indeed, while the technique we discuss here is basic, it gives a good overview and is very easy to use. So let get focused… We will use iostat utility. There is much to say about IO monitoring and interpreting results. Perhaps this is only the first of a series of posts about IO statistics. At Pythian we often come across different environments with specific characteristics and various requirements that our clients have. So stay tune — more to come.

Page 232 of 252« First...102030...230231232233234...240250...Last »