latch

As an Oracle DBA, developer or performance analyst, you may have run into what is termed "latch contention" at various points. So what exactly is a "latch" and why do we have contention on this "latch". In this article, we will take an in-depth look at latches and how we determine and resolve such contention. Whether you are a newbie or an experienced old-timer, we hope this article will cast a little more light on this ill-understood subject.
Read the article here:
 http://tech.e2sn.com/oracle/troubleshooting/latch-contention-troubleshooting
 

I wrote a latch contention troubleshooting article for IOUG Select journal last year (it was published earlier this year). I have uploaded this to tech.E2SN too, I recommend you to read it if you want to become systematic about latch contention troubleshooting:

http://tech.e2sn.com/oracle/troubleshooting

I’m working on getting the commenting & feedback work at tech.E2SN site too, but for now you can comment here at this blog entry…