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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4278) Batch inserts with Clobs fails with the embedded driver
Date Wed, 01 Jul 2009 11:42:48 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan updated DERBY-4278:
-----------------------------------

    Urgency: Urgent

I'm marking this issue as Urgent as it seems to be triggered with default configuration using
Derby with Hibernate (and Clobs in the table of course). It is also a regression, introduced
through the new Clob header format code.
Finally, the bug was reported by a user.

> Batch inserts with Clobs fails with the embedded driver
> -------------------------------------------------------
>
>                 Key: DERBY-4278
>                 URL: https://issues.apache.org/jira/browse/DERBY-4278
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.5.1.1, 10.6.0.0
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>         Attachments: derby-4278-1a-regression_test.diff, derby-4278-2a-fix.diff
>
>
> Batch inserts with Clobs fail because Derby is unable to determine if it should write
the Clob stream header formats using the old 10.4 style format or the new 10.5 format.
> More specifically, the access mode (soft upgrade or not) hasn't been set specifically
by Derby before the stream header has to be generated, and there isn't enough context to determine
the mode at generation time.
> Bug was reported on derby-user: http://www.nabble.com/Hibernate-%2B-Derby---Unable-to-determine-stream-header-for-hibernate-type-%27text%27-td24099674.html
> The bug was reported for Derby used with Hibernate. Possible workarounds are to use the
client driver or to avoid using batched inserts with Clobs (i.e. don't use batched inserts,
which may degrade performance, or use a different data type).

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