Comments on: Row sizes http://jonathanlewis.wordpress.com/2012/09/27/row-sizes/ Just another Oracle weblog Thu, 23 May 2013 12:47:17 +0000 hourly 1 http://wordpress.com/ By: Row sizes 2 | Oracle Scratchpad http://jonathanlewis.wordpress.com/2012/09/27/row-sizes/#comment-54686 Sat, 13 Apr 2013 23:50:28 +0000 http://jonathanlewis.wordpress.com/?p=9555#comment-54686 [...] an earlier post I showed you how you could generate SQL to analyze the distribution of row sizes in a table. In the [...]

]]> By: Jonathan Lewis http://jonathanlewis.wordpress.com/2012/09/27/row-sizes/#comment-50634 Thu, 04 Oct 2012 14:35:03 +0000 http://jonathanlewis.wordpress.com/?p=9555#comment-50634 Mladen,

I made the change a long time ago, and didn’t leave a note in the script about it.

I think I found a couple of cases where vsize() and sys_op_opnsize() gave different results, and vsize() was the wrong one, possibly with respect to nvarchar2() and other N-types – but I can’t be sure of that.

Since the code was an occasional diagnostic for DBAs, rather than something that would be used for affecting data in normal production processing I didn’t mind using an undocumented function – especially one that Oracle uses every day for collecting stats on all column types.

]]> By: Mladen Gogala http://jonathanlewis.wordpress.com/2012/09/27/row-sizes/#comment-50623 Wed, 03 Oct 2012 20:24:30 +0000 http://jonathanlewis.wordpress.com/?p=9555#comment-50623 Jonathan, why did you opt for an undocumented function sys_op_opnsize instead of the documented and well known vsize?

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