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From "Rick Curtis (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2139) OpenJPA fails to recover from a broken database on startup
Date Thu, 23 Feb 2012 16:38:48 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13214840#comment-13214840
] 

Rick Curtis commented on OPENJPA-2139:
--------------------------------------

Mark -- I was afraid that the patch might fail in a different area. Can you post a stack from
when we try to create the first EM? I assume that we get an exception from some other method
that AbstractBrokerFactory.makeReadOnly() calls.
                
> OpenJPA fails to recover from a broken database on startup
> ----------------------------------------------------------
>
>                 Key: OPENJPA-2139
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2139
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 2.2.0
>            Reporter: Mark Struberg
>            Assignee: Mark Struberg
>            Priority: Critical
>             Fix For: 2.3.0
>
>         Attachments: OPENJPA-2139.mdr.patch, OPENJPA-2139.patch
>
>
> The following scenario:
> 1.) turn off the database
> 2.) perform a query against the database
> 3.) turn on the database
> 4.) try to re-run the query from 2.)
> In 4.) you will get the following Exception:
> openjpa-2.2.0-r422266:1244990 nonfatal user error> org.apache.openjpa.persistence.ArgumentException:
An error occurred while parsing the query filter "SELECT k FROM DbEnumKey AS k where k.type=:typ
ORDER BY k.ordinal". Error message: The name "DbEnumKey" is not a recognized entity or identifier.
Known entity names: []
> Basically the whole app is stale afterwards!
> Solution: caching the entities might only be done if a connection can be established.

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