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From "Evgeny Ryabitskiy (JIRA)" <>
Subject [jira] Created: (CAY-1462) Refreshing connections in DataPool after DB restart
Date Mon, 12 Jul 2010 07:58:52 GMT
Refreshing connections in DataPool after DB restart

                 Key: CAY-1462
             Project: Cayenne
          Issue Type: Improvement
    Affects Versions: 3.0, 2.0 branch
         Environment: MS SQL
            Reporter: Evgeny Ryabitskiy
            Assignee: Evgeny Ryabitskiy
             Fix For: 2.0.5, 3.1M1

Problem can be simulated after restart of SQL Server.

So connection in my pool become "dead". Only thing that helps: restart my appllication.

I wold like to have some mechanism to validate pooled connections and refresh them.

Possible solutions:
1) validate before give connection from pool
2) asynchronous thread for validation.
3) Generate event for pool on such exceptions (to validate and refresh connections)

1- is more reliable but not sure how it will influence on performance...
2 - at least something... but can look like some not understandable magic... :)
3 - need some code investigation... 

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