Comments on: Flushing a cursor out of the Library Cache http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/ By: Harald van Breederode Wed, 19 Jun 2013 15:32:15 +0000 hourly 1 http://wordpress.com/ By: כמה מילים על bind peeking ואיך למחוק Execution Plan מה-Library Cache « הבלוג של זהר אלקיים http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-633 Wed, 21 Mar 2012 16:25:47 +0000 http://prutser.wordpress.com/?p=327#comment-633 [...] נוסף (בערך מה שכתבתי, רק באנגלית) ניתן לקרוא כאן בבלוג הזה או בספרות של אורקל. Share [...]

]]> By: VARUN http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-621 Fri, 02 Dec 2011 08:38:25 +0000 http://prutser.wordpress.com/?p=327#comment-621 HI sir,

In Oracle 11g we can remove particular sql statement from Shared Pool without flushing the entire Shared Pool.

]]> By: Purging a single execution plan out of the shared pool (10.2) » Master Yavor from Tryavna http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-614 Wed, 02 Nov 2011 20:39:31 +0000 http://prutser.wordpress.com/?p=327#comment-614 [...] Цък: (tested on 10.2.0.4.1) I needed this today and I want to share the solution i found in Harald’s [...]

]]> By: Уста Явор Тревненски » Blog Archive » Purging a single execution plan out of the shared pool (10.2) http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-612 Sun, 23 Oct 2011 11:19:43 +0000 http://prutser.wordpress.com/?p=327#comment-612 [...] 23rd, 2011 by yavor Цък: I needed this today and I want to share the solution i found in Harald’s [...]

]]> By: Уста Явор Тревненски » Blog Archive » Изчистване на единичен план от shared pool http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-611 Sun, 23 Oct 2011 10:58:55 +0000 http://prutser.wordpress.com/?p=327#comment-611 [...] окт 20th, 2010 by yavor Цък: Днес се сблъсках с този проблем и искам да споделя решението, което открих в блога на Харалд. [...]

]]> By: maclean http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-502 Tue, 02 Nov 2010 11:41:10 +0000 http://prutser.wordpress.com/?p=327#comment-502 but dbms_shared_pool.pure procedure can’t be utilized on 10g ,even 10.2.0.4

]]> By: JMIZE http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-354 Thu, 11 Feb 2010 16:22:36 +0000 http://prutser.wordpress.com/?p=327#comment-354 Great post! I have been looking to use the .purge to remove the sql generating a bad plan due to bind peeking. I am working a production issue now but am going through the motions for on test. When I load dbmspool.sql from 11g, the dbms_shared_pool package creates but the pbod becomes invalid. Have you (or others?) experienced this? I was able to reproduce on HPUX and Linux (OEL5). I have also asked Kerry Osbourne on his blog. Thanks for any insight!

]]> By: radino http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-180 Mon, 20 Jul 2009 23:11:06 +0000 http://prutser.wordpress.com/?p=327#comment-180 A saw a trick somewhere: “comment on table skew is ”;”, but it invalidates all cursors.
but dbms_shared_pool is much appropriate, of course..

]]> By: Stuck execution plans – purging a cursor « Martin Widlake’s Yet Another Oracle Blog http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-166 Fri, 03 Jul 2009 15:45:54 +0000 http://prutser.wordpress.com/?p=327#comment-166 [...] For more comprehensive details check out Haralds original post. [...]

]]> By: Harald van Breederode http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-137 Mon, 27 Apr 2009 08:30:51 +0000 http://prutser.wordpress.com/?p=327#comment-137 Hi Roberto,

You are absolutely correct!

Somehow I forgot to add the following to the example:

alter session set events '5614566 trace name context forever';

Thanks for catching this.
-Harald

]]> By: Roberto http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-136 Mon, 27 Apr 2009 07:34:27 +0000 http://prutser.wordpress.com/?p=327#comment-136 I would stress that, as reported in metalink note 751876.1:
“The fix has gone into 10.2.0.4. However, the fix is event protected. You need to set the event 5614566, to make use of purge. Unless the event is set, purge will have no effect.”

]]> By: Harald van Breederode http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-135 Sun, 26 Apr 2009 17:06:37 +0000 http://prutser.wordpress.com/?p=327#comment-135 Hi illiyaz,

Thanks for your comment.
No, I do not think that there is a difference in both methods when you only look at one cursor. Both methods will flush the cursor out of the library cache. However the scope is quite different. Flushing the entire shared pool is a very drastic thing to do with many consequences. I would not advise this over purging just one cursor. Even when you are on an older release I would choose something else like a dummy DDL for example.
-Harald

]]> By: illiyaz http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-134 Sun, 26 Apr 2009 15:17:16 +0000 http://prutser.wordpress.com/?p=327#comment-134 Good Article…one small question…is there any advantage of using this purge option instead of Alter system flush shared_pool apart from prevention of flushing of entire shared pool ? Do both the things do the same job ??

]]> By: Log Buffer #143: a Carnival of the Vanities for DBAs | Pythian Group Blog http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-133 Fri, 24 Apr 2009 16:58:04 +0000 http://prutser.wordpress.com/?p=327#comment-133 [...] On The Dutch Prutser’s Blog, Harald van Breederode demonstrates flushing a cursor out of the library cache. [...]

]]> By: How to invalidate execution plan « Coskan’s Approach to Oracle http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/#comment-130 Wed, 22 Apr 2009 11:40:05 +0000 http://prutser.wordpress.com/?p=327#comment-130 [...] http://prutser.wordpress.com/2009/04/19/flushing-a-cursor-out-of-the-library-cache/ [...]

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