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Home -> Community -> Usenet -> c.d.o.server -> Re: PCTFREE=0 and updates
On Wed, 10 Apr 2002 14:23:56 GMT, "Robert Eden" <rmeden_at_yahoo.com>
wrote:
>If I only update statically sized columns in a table ( NUMBER, CHAR (not
>VARCHAR)) can I sent PCTFREE to 0 to avoid the (default) 10% waste? (no
>nulls involved)
>
>The Oracle docs aren't clear on the types of operations that change "row
>size".
>
>Robert
>
number is not statically sized.
Any operation that would make any column at least one byte longer will
affect the rowsize.
Decreasing PCTFREE to 0 will likely result in chained rows (ie rows in
more than 1 Oracle block)
The effect of chaining on performance is big enough to avoid reducing
PCTFREE to 0. Please reconsider.
Regards
Sybrand Bakker, Senior Oracle DBA
To reply remove -verwijderdit from my e-mail address Received on Wed Apr 10 2002 - 11:54:36 CDT
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