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Date: Thu, 8 Jun 2006 19:11:30 +0000 (GMT+00:00)
From: "Satheesh Bandaram (JIRA)" <derby-dev@db.apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-1384) Increase default BLOB/CLOB length to
 maximum supported (2G?)
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    [ http://issues.apache.org/jira/browse/DERBY-1384?page=comments#action_12415410 ] 

Satheesh Bandaram commented on DERBY-1384:
------------------------------------------

Here is one situation where changing default max length would cause problem. In soft upgrade, if some one creates a default length BLOB/CLOB, if the default is changed, they could successfully create larger than 1MB blob/clob. On downgrade, statements like this would fail:

INSERT INTO TAB SELECT * FROM BLOBTAB;

where all blob/clob instances are created using default size, just some are created on soft-upgrade to 10.2.

Soft upgrade checks are cheap and are designed to maintain same behavior across versions.


> Increase default BLOB/CLOB length to maximum supported (2G?)
> ------------------------------------------------------------
>
>          Key: DERBY-1384
>          URL: http://issues.apache.org/jira/browse/DERBY-1384
>      Project: Derby
>         Type: Improvement

>   Components: SQL
>     Reporter: Bernt M. Johnsen
>     Assignee: Bernt M. Johnsen
>     Priority: Minor
>      Fix For: 10.2.0.0
>  Attachments: derby-1384-code.diff, derby-1384-code.stat, derby-1384-docs.diff, derby-1384-docs.stat
>
> Default BLOB/CLOB length should be the maximum length supported by Derby (2G?)

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