Re: Chained vs. migrated rows - Any easy way to tell the difference?

btw if you do want to count column sizes you want VSIZE, not LENGTH (and watch out for nulls). I don't know how reliable any size calculation like this will be though. 

-----Original message-----
From: Jay.Miller@xxxxxxxxxxxxxxxx
Date: 28/10/08 19:27
We have two databases that are showing very high number of/ table fetch continued row/ in v$sysstat each day and before doing a move or export/import or copying the rows off and reinserting them I was hoping to find out if I'd really gain anything.
All I found in the Oracle docs was the suggestion to assume they're migrated and if the fix doesn't work then that means they were really chained ( Note:122020.1).
I'm considering using length() on all the columns and adding them together to find any rows that wouldn’t fit in a block but was wondering if there was an easier way. Besides, one of the tables (third party app) has a long raw column so there's no easy way to get the column length there. 



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