Re: Strange Oracle error: ORA-12899: value too large for column when creating table with virtual column

From: Peter Schneider <>
Date: Tue, 18 Mar 2014 19:07:58 +0100
Message-ID: <lga270$280$>

Hi Mladen,

Am 18.03.2014 00:23, schrieb Mladen Gogala:
> On Mon, 17 Mar 2014 18:01:43 +0100, Peter Schneider wrote:
>> Hi,
>> I have a strange error message when I try to create a table like this
>> (DDL generated from SQL Data Modeler).
> What seems to be the problem:

> Just kidding. This works in Oracle 11G. It fails in the version 12c:

Well thanks for your comment, but you kind of missed the point, please see my other posting. The pattern is that it fails in single byte DB and in UTF-8 DB with byte sementacs, while it works in UTF-8 DB with Char sementics. This is the same in 11.1, 11.2, 12c.

> The awkward "CAST" is unnecessary, just increasing the size of the
> virtual column for 1 byte will do the trick.

I know, but that's not what I want. There is no way on earth that this virtual column could ever be longer than 9 characters, so I want this to be reflected in the data dictionary. I explicitly don't want it to be a V2(10) because it's not. That's simple not true. So my workaround with the cast is what I chose to do.


Climb the mountain not to plant your flag, but to embrace the challenge,
enjoy the air and behold the view. Climb it so you can see the world,
not so the world can see you.                    -- David McCullough Jr.
Received on Tue Mar 18 2014 - 19:07:58 CET

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