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Date: Wed, 14 Mar 2012 05:11:50 +0000 (UTC)
From: "Deepika Kochhar (Commented) (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
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Subject: [jira] [Commented] (DERBY-5650) ERROR XSDBB: Unknown page format at
 page Page(1936,Container(0, 1009)), page dump follows: Hex dump: 00000000:
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    [ https://issues.apache.org/jira/browse/DERBY-5650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228974#comment-13228974 ] 

Deepika Kochhar commented on DERBY-5650:
----------------------------------------

Hi Rick,

I know this is database corruption but wanted to know under what circumstances this happens.
                
> ERROR XSDBB: Unknown page format at page Page(1936,Container(0, 1009)), page dump follows: Hex dump: 00000000:
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5650
>                 URL: https://issues.apache.org/jira/browse/DERBY-5650
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.6.1.0
>            Reporter: Deepika Kochhar
>         Attachments: derby.log
>
>
> i am trying to insert values into the database table EVENTS_TABLE where i have 18 columns with EVENT_ID as Unique but can be null. Indexes for this table is EVENT_INDEX which points to EVENT_ID internally. Now at some point of insertion into this Table, i am getting "The statement was aborted because it would have caused a duplicate key value in a unique or primary key constraint or unique index identified by 'EVENT_INDEX' defined on 'EVENTS_TABLE'." error in my logs and in derby logs i am getting ERROR XSDBB: Unknown page format at page Page(1936,Container(0, 1009)), page dump follows: Hex dump: 00000000: error.
> Please let me know why this is happening and what is the meaning of this error.

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