Someone asked in a back channel email if parallelism is used. The select
portion of the update statement uses parallelism (though the updates
themselves get serialized) through the use of an in-line join update (to
avoid the second sub-query commonly used to constrain the rows being
updated):
Update (Select /*+ parallel hints */ ....
From a,b
Where a.key = b.key)
Set a.col1 = b.col1,
a.col2 = b.col2
.....
Regards,
Larry G. Elkins
[EMAIL PROTECTED]
214.954.1781
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Larry
> Elkins
> Sent: Thursday, December 26, 2002 6:09 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Row Migration
>
>
> Listers,
>
> 8.1.7.4 64 Bit Solaris
>
> Does row migration utilize DB File Sequential Reads on the table? Off the
> top of my head I would expect so, but I've never tested something
> like that
> before.
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Larry Elkins
INET: [EMAIL PROTECTED]
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