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From "Vincent Cornet (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMQ-3304) JDBCPersistenceAdapter lockDataSource property (and other settings) should appear on the SQLServer persistence page
Date Mon, 12 Nov 2012 14:41:14 GMT

    [ https://issues.apache.org/jira/browse/AMQ-3304?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495298#comment-13495298
] 

Vincent Cornet commented on AMQ-3304:
-------------------------------------

+1
Experienced the same issue with Sybase: a line or two in the JDBCPersistenceAdapter-related
documentation pages could be helpful indeed.

                
> JDBCPersistenceAdapter lockDataSource property (and other settings) should appear on
the SQLServer persistence page
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMQ-3304
>                 URL: https://issues.apache.org/jira/browse/AMQ-3304
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 5.5.0
>            Reporter: Arnaud BRAND
>            Priority: Minor
>
> When using the JDBCPersistenceAdapter with SQLServer the use of the lockDataSource property
is mandatory, or else the transaction log will fill up (wether the db is in simple or full
recovery mode doesn't change anything), and the broker will eventually crash.
> The page http://activemq.apache.org/sqlserver.html should clearly state that the lockDataSource
should be used and should point to another database.
> Additionnaly, this page could give another configuration tweak for SQLServer which results
in a sensible performance improvement when queues are quite full (>50000 messages in our
configuration):
> {code:xml}
> <statements>
>   <statements findNextMessagesStatement="SELECT TOP 5 ID, MSG FROM ACTIVEMQ_MSGS 
WHERE CONTAINER=? AND ID > ? ORDER BY ID"/>
> </statements>
> {code} 

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