Comments on: Does an UPDATE statement modify the row if the update modifies the column to same value? http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/ Discussions about Oracle performance tuning, RAC, Oracle internal & E-business suite. Sat, 11 May 2013 07:29:27 +0000 hourly 1 http://wordpress.com/ By: Jason http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-1930 Tue, 25 Dec 2012 14:48:46 +0000 http://orainternals.wordpress.com/?p=875#comment-1930 Thanks for this good entry, i did the dump myself, I found that if I update the value back, the index entry would be resued, the D flag was gone.

]]> By: hello http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-866 Thu, 03 Nov 2011 15:16:47 +0000 http://orainternals.wordpress.com/?p=875#comment-866 Above all, a well written piece of writing!

]]> By: iPad 2 http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-768 Mon, 26 Sep 2011 10:07:20 +0000 http://orainternals.wordpress.com/?p=875#comment-768 Thank god some bloggers can write. Thank you for this blog post

]]> By: rakesh http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-758 Wed, 14 Sep 2011 07:25:26 +0000 http://orainternals.wordpress.com/?p=875#comment-758 If i UPDATE a record with different value it will go to pctfree of the block…where it will go if i update a record with same value? is it pctfree of the block or the same place where the old value was there(replacing the old value with new value).

Thanks & Regards,
Rakesh

]]> By: State of Data Last Week – Nov 20 « Dr Data's Blog http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-614 Sun, 21 Nov 2010 19:37:22 +0000 http://orainternals.wordpress.com/?p=875#comment-614 [...] you try to UPDATE a record with EXACTLY same values as before? Is it wasted work? Bad news – actual record does get (redundantly) modified; Good News – the index [...]

]]> By: Log Buffer #206, A Carnival of the Vanities for DBAs | The Pythian Blog http://orainternals.wordpress.com/2010/11/04/does-an-update-statement-modify-the-row-if-the-update-modifies-the-column-to-same-value/#comment-606 Mon, 15 Nov 2010 06:27:46 +0000 http://orainternals.wordpress.com/?p=875#comment-606 [...] Riyaj Shamsudeen shows what really happens when you update a query with the same values it already had. [...]

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