Comments on: Advanced Oracle Troubleshooting Guide, Part 7: Sampling latch holder statistics using LatchProf

By: New versions of LatchProf and LatchProfX for latch contention troubleshooting and tuning | Tanel Poder's blog: Core IT for Geeks and Pros

Tue, 16 Feb 2010 03:03:59 +0000

[...] http://blog.tanelpoder.com/2008/07/09/advanced-oracle-troubleshooting-guide-part-7-sampling-latch-ho... [...]

By: latch: cache buffers chains latch contention – a better way for finding the hot block | Tanel Poder's blog: Core IT for Geeks and Pros

Thu, 27 Aug 2009 09:37:11 +0000

[...] http://blog.tanelpoder.com/2008/07/09/advanced-oracle-troubleshooting-guide-part-7-sampling-latch-ho... [...]

By: a reader

a reader — Wed, 11 Feb 2009 01:41:29 +0000

Hi Tanel,

a simple comment. rather than “press CTRL+C after first pageful of results”,
I preferred to get the top 10 only as where rownum < 11

thks&rgds.

By: Ricardo

Ricardo — Wed, 10 Sep 2008 20:23:39 +0000

You are right ;)

By: tanelp

tanelp — Wed, 10 Sep 2008 10:58:55 +0000

Hi Ricardo,

I didn’t really think about it. I put the hint in “just in case” to get this potential issue out of my mind. If this view is not mergeable now, who knows maybe in 12g it is :)

Tanel.

By: Ricardo

Ricardo — Wed, 10 Sep 2008 10:13:24 +0000

Hi Tanel,

wonderful explanation. I have a doubt about you script latchprof. What´s the importance of the no_merge hint?. I have tested the execution with and without the no_merge hint and I am not able to get different results. Is this a truly mergeable view?

Thank you Tanel!

By: Jeet

Jeet — Thu, 24 Jul 2008 11:54:39 +0000

Hi Tanel,

Your blog is just great. It has so much of unexplored content of oracle. I appreciate your idea of sharing this info with us.

Sorry to ask a basic question about WaitProf and LatchProf script.

Can you please explain me why do you need the sample. What is the logic of the sample which you have used in both these scripts.

Thanks,
Jeet

By: Advanced Oracle Troubleshooting Guide, Part 8: Even more detailed latch troubleshooting using LatchProfX « Tanel Poder’s blog: Core IT for geeks and pros

Tue, 22 Jul 2008 16:58:39 +0000

[...] Internals, Oracle, Performance, Tools, Troubleshooting — tanelp @ 12:58 am In my last AOT post I published my LatchProf script which is able to sample detailed latchholder data from [...]