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Re: Cool way to crash an Oracle database, any time, any place

From: Jared Still <>
Date: Mon, 07 May 2001 16:55:00 -0700
Message-ID: <>


What's scary about this is not just that you've managed to crash the database by very innocent means, but we don't know how else this bug can be invoked. It could be something equally innocuous.

Q: Are you loading in direct mode?


On Monday 07 May 2001 16:20, Weaver, Walt wrote:
> Just thought I'd share what I learned today with everyone. This is Oracle
> 8.1.7 on a VA Linux 4450, Linux Red Hat 6.2. I'm migrating customers from
> MySQL to Oracle, using Sqlloader to load the data into Oracle.
> In one table I have the following column: C$NOTES VARCHAR2(4000)
> In my Sqlloader script I have an entry: C$NOTES CHAR(4000)
> When I ran Sqlloader about 130 out of 35,000 rows were not loaded due to a
> "inserted value too large for column" error on C$NOTES.
> So, just for grins I changed the Sqlloader entry to C$NOTES CHAR(40000).
> When I run Sqlloader for the table with this value, it crashes the database
> every time with an ORA-600 [4620] [] [] [] [] [] error. Every dang time.
> Pmon just gives up the ghost, man. Shuts the door and turns off the lights.
> Dies a horrible death.
> Now, obviously I created this problem myself, but it seems to me that
> Oracle
> should be able to handle this a bit more gracefully than it does. :>)
> Anybody else ever see this? I've logged an iTar on MetaMidget to inform the
> authorities of the problem. My cursory search on MetaMidget uncovered
> absolutely no evidenct that anyone knows about this.
> --Walt Weaver
> Bozeman, Montana

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Author: Jared Still

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Received on Mon May 07 2001 - 18:55:00 CDT

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