Comments on: Oracle Session Snapper – real-time session-level performance stats for DBAs

By: Advertisement: Be an Early Bird « So Many Oracle Manuals, So Little Time

Advertisement: Be an Early Bird « So Many Oracle Manuals, So Little Time — Fri, 11 Sep 2009 23:55:55 +0000

[...] Free Session Snapper tool created by Tanel [...]

By: Great Expectations: An Interview with Tanel Poder « So Many Oracle Manuals, So Little Time

Sat, 15 Aug 2009 04:46:38 +0000

[...] and has published useful Oracle troubleshooting tools like PerfSheet, LatchProfX, and Session Snapper. In addition to consulting and training, Tanel frequently speaks at major conferences such as [...]

By: jack3_di

jack3_di — Tue, 16 Jun 2009 00:51:57 +0000

By: Hotsos Symposium 2008 Day Two « Seven Seconds

Hotsos Symposium 2008 Day Two « Seven Seconds — Wed, 05 Mar 2008 04:17:17 +0000

[...] you don’t want to install the sesstat package, you can run a lightweight version called the session-snapper. He wrote the tool because of an interesting blog about the lack of session level information. You [...]

By: Oracle Session Snapper v1.06 released « Tanel Poder’s blog: Core IT for geeks and pros

Thu, 06 Dec 2007 12:58:50 +0000

[...] http://blog.tanelpoder.com/2007/08/20/oracle-session-snapper-real-time-session-level-performance-sta... [...]

By: Log Buffer #59: a Carnival of the Vanities for DBAs « I’m just a simple DBA on a complex production system

Fri, 24 Aug 2007 16:03:00 +0000

[...] in other news: Tanel Poder published a seriously cool script for tracking session level performance stats that work even when you are not allowed to do anything on the database. Alex Niujten, on the highly [...]

By: Uwe M. Kuechler

Uwe M. Kuechler — Thu, 23 Aug 2007 15:57:01 +0000

This script is way cool, but even cooler is the fact that you’re willing to share it with the community! Thanks a lot, Tanel – from now on you may be called by your new nick “Red Snapper”! ;-)
I’ll fiddle around with it in the next days and may come back for some suggestions.
Best Regards,
–==/ Uwe \==–

By: tanelp

tanelp — Thu, 23 Aug 2007 06:57:10 +0000

I think when I add the gv$ sampling feature, I would make it optional, e.g. there’s a parameter global, if it’s omitted the v$ views are used, but when you specify either instance names or inst_id’s then those instances would be snapped through gv$

By: paulk

paulk — Tue, 21 Aug 2007 05:53:56 +0000

One problem with gv$ utilities – if an instance is in trouble some of the gv$ views ( not exactly sure which ones, not so much gv$session_wait as some of the others, I’m pretty sure that gv$instances is a bad one and perhaps gv$session, too) can freeze up on you. Sometimes the problem instance is also frozen, however being able to collect information from other instances via v$ is useful. “Yes, we know M8 is crawling, but that’s a backup instance, the others are fine”, when in fact the others aren’t fine, the users are suffering, the problems on one instance are impacting the others, and you can prove it with data collected from v$, but maybe not from gv$. Not a happy scenario, wish it never happened, but for me smetimes it’s necessary to have both gv$ and v$ versions.

By: tanelp

tanelp — Mon, 20 Aug 2007 13:23:07 +0000

..and I did not “draw” the ASCII snapper myself, I used a JGP to ASCII converter. If you google for “GIF to ASCII converter” you’ll find multiple sites which do it for you. You’ll just need to submit the URL of the image you want to convert.