Re: MView... Fresh build is much faster than Complete refresh...

You're doing a complete refresh, so logs on the base tables won't matter. If 
you do decide to keep logs and do (or attempt) fast refreshes, consider whether 
that's the best approach given the amount of change on the base tables. If the 
base tables change a lot between refreshes, it may be faster to do a complete 
refresh (assuming you cure the issue you're encountering below). 

Dan

----- Original Message ----
Robert,
do you have MV logs on the base tables?, the are cleaned up upon refresh, so if 
they are 'big', it may explain the result, also, how many indexes do you have 
on this MView?

rgds


On 8/22/07, Robert Freeman <robertgfreeman@xxxxxxxxx> wrote:





So I 
have this materialized view. When I execute the create materialized view 
command, it takes 32.39 seconds to build. A complete refresh (exec 
dbms_mview.refresh('mview_name','C'); ) from the prompt this takes almost 
3-4 times longer. Does anyone have any thoughts on why this might be so just 
right off hand. I've not run a 10046 on it yet,  but I thought maybe there 
is something about MVIEW Full Refreshes that I'm just 
missing.


RF

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