Re: Informatica Bulk Mode behavior
- From: "Jonathan Lewis" <jonathan@xxxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 22 Apr 2004 16:35:53 +0100
First guess - they're using direct load, and
still loading one row at a time, so you get
one row per block (or worse).
Since you've got the v$sql entry, check
executions against rows processed and see
if that gives you a clue.
Second guess - is your tablespaces using
auto segment space management: (e.g a
9.2 database with tablespaces created by
DBCA with default settings). If so, check
a few blocks from each extent - there are
a couple of bugs in ASSM that could lead
to massive space wastage (like only using
3 blocks per extent before allocating a new
extent).
Regards
Jonathan Lewis
http://www.jlcomp.demon.co.uk
The Co-operative Oracle Users' FAQ
http://www.jlcomp.demon.co.uk/faq/ind_faq.html
April 2004 Iceland http://www.index.is/oracleday.php
June 2004 UK - Optimising Oracle Seminar
July 2004 USA West Coast, Optimising Oracle Seminar
August 2004 Charlotte NC, Optimising Oracle Seminar
September 2004 USA East Coast, Optimising Oracle Seminar
September2004 UK - Optimising Oracle Seminar
----- Original Message -----
From: "Thomas Jeff" <jeff.thomas@xxxxxxxxxxx>
To: <oracle-l@xxxxxxxxxxxxx>
Sent: Thursday, April 22, 2004 3:32 PM
Subject: Informatica Bulk Mode behavior
List,
Is anyone familiar with how Informatica's bulk mode works?
We have a situation where I created a 4GB tablespace for a new and
simple
truncate/load operation from Informatica, around 7 million rows
estimated
to take up 1.5GB.
Using bulk mode, which appears to be a direct load (in the SQL cache,
the
INSERT statement has a hint that I've never seen before: SYS_DL_CURSOR
which
I assume stands for Direct Load), they run out of space in the
tablespace after
about 200K rows have been inserted.
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