[jira] Updated: (DBCP-336) Incorect data from data base if connection pool size is minimum (say 1 to 3 )

["Rony M Sunny (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DBCP-336?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rony M Sunny updated DBCP-336:
------------------------------

    Attachment: dbcpconnectionpooltest.zip

I am attaching a sample code which reproduce above mentioned bug (Incorrect data from DBCP connection pool)



> Incorect data from data base if connection pool size is minimum (say 1 to 3 )
> -----------------------------------------------------------------------------
>
>                 Key: DBCP-336
>                 URL: https://issues.apache.org/jira/browse/DBCP-336
>             Project: Commons Dbcp
>          Issue Type: Bug
>    Affects Versions: 1.4
>         Environment:  java on linux and sql server 2005  db on windows 
>            Reporter: Rony M Sunny
>         Attachments: dbcpconnectionpooltest.zip
>
>
>    Environment:
>    I have a sp which return data from data base according to a criteria and i put a sleep of 700 millisecond on sp . 
>    The connection pool configuration is very minimum compared to data accessing thread, then from multiple java thread i tried to access data for a time period of 30- 60 minute, also i put a query execution time out of 1 second, 
>     The result is that
>        Some thread have not get any data from db as there is not much available connection to db in pool and can see it from the exception log , it is OK.
>      But the problem  is that after some period time (take 30 - 60 min)  data retrieved by  threads are incorrect, means data retrieved is, query result of some other thread.
>      
> My connection pool configuration is here
> -----------------------------------------------------------
>   <property name="maxIdle" value="3" description=""/>
>                     <property name="poolInitialSize" value="1" description=""/>
>                     <property name="testOnBorrow" value="true" description=""/>
>                     <property name="maxStmts" value="10" description=""/>
>                     <property name="validationQuery" value="SELECT 1" description=""/>
>                     <property name="password" value="*****" description=""/>
>                     <property name="url" value="jdbc:microsoft:sqlserver://192.168.29.222:1433;           DatabaseName=marketsummary" description=""/>
>                     <property name="testOnReturn" value="true" description=""/>
>                     <property name="maxActive" value="3" description=""/>
>                     <property name="userId" value="***" description=""/>
>                     <property name="minIdle" value="3" description="String"/>
>                     <property name="maxWait" value="1000" description=""/>
>                     <property name="driver" value="com.microsoft.jdbc.sqlserver.SQLServerDriver" description=""/>
> ----------------------------------------------------------
> Please look in to this
>    

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