IIRC, any operation that required allocation of a new extent would perform a coalesce.
--
Daniel W. Fink
http://www.optimaldba.com
IOUG-A Live! April 27 - May 1, 2003 Orlando, FL
Thursday, May 1 1:00pm - 2:00pm - Automatic Undo Internals
Hemant K Chitale wrote:
>
> In a Dictionary-Managed tablespace [the "good old days" that Rachel is
> talking about],
> SMON would auto-coalesce free extents in the background if PCTINCREASE
> was > 0.
> However, even where PCTINCREASE=0, a CREATE TABLE would still coalesce
> contigous extents. Of course, if the CREATE statement could find
> a Free Extent equal to or larger than the required size, it would use
> such
> extent [breaking up the larger into a used and a free extent]. The
> CREATE
> would coalesce only if it couldn't find an equal or larger extent.
>
> Hemant
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Author: Daniel W. Fink
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Received on Fri Apr 18 2003 - 00:31:41 CDT
