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POHibernate and mysql timeout issue
 

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    <p>I have been having trouble with Hibernate and Mysql timeout error.I am also using properties of c3p0(connection provider). After my Hibernate/MySQL have been running after 8 hours(which is default timeout value in Mysql), I have the exception. But it doesn't help.</p> <p>property for auto reconnect also not working.</p> <p>Here is my Hibernate Configuration:</p> <pre><code>&lt;property name="connection_provider_class"&gt;org.hibernate.connection.C3P0ConnectionProvider&lt;/property&gt; **&lt;property name="connection.autoReconnect"&gt; true&lt;/property&gt; &lt;property name="connection.autoReconnectForPools"&gt;true&lt;/property&gt;** &lt;property name="connection.is-connection-validation-required"&gt;true&lt;/property&gt; &lt;property name="c3p0.validate"&gt;true&lt;/property&gt; &lt;property name="current_session_context_class"&gt;thread&lt;/property&gt; &lt;property name="cache.use_query_cache"&gt;false&lt;/property&gt; &lt;property name="cache.use_second_level_cache"&gt;false&lt;/property&gt; &lt;property name="c3p0.idle_test_period"&gt;20&lt;/property&gt; &lt;property name="c3p0.timeout"&gt;40&lt;/property&gt; &lt;property name="c3p0.max_size"&gt;100&lt;/property&gt; &lt;property name="c3p0.min_size"&gt;1&lt;/property&gt; &lt;property name="c3p0.acquireRetryAttempts"&gt;10&lt;/property&gt; &lt;property name="c3p0.maxPoolSize"&gt;100&lt;/property&gt; &lt;property name="c3p0.maxIdleTime"&gt;300&lt;/property&gt; &lt;property name="c3p0.maxStatements"&gt;50&lt;/property&gt; &lt;property name="c3p0.minPoolSize"&gt;10&lt;/property&gt; &lt;property name="c3p0.preferredTestQuery"&gt;select 1;&lt;/property&gt; &lt;property name="connection.driver_class"&gt;com.mysql.jdbc.Driver&lt;/property&gt; &lt;property name="connection.url"&gt;jdbc:mysql://localhost:3306/doqeap&lt;/property&gt; &lt;property name="connection.user"&gt;root&lt;/property&gt; &lt;property name="connection.password"&gt;*******&lt;/property&gt; &lt;property name="dialect"&gt;org.hibernate.dialect.MySQLDialect&lt;/property&gt; &lt;property name="hibernate.jdbc.batch_size"&gt;0&lt;/property&gt; &lt;mapping&gt;&lt;/mapping&gt; </code></pre> <p>please help me to sort out this problem. Thanks </p>
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    1. USJigar Joshi
    1. USRahul
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    1. CORahul, the 8 hrs timeout you mentioned is for what ? Query timeout (which I hope not) or idle connection timeout ?
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      1. USSantosh
    2. COSantosh, if we don't interact 8 hours with mysql than mysql automatic close connection.Default wait_timeout and interactive_timeout of mysql is 28800 seconds equals 8 hours
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      1. USRahul
    3. COSimilar one, can refer http://stackoverflow.com/q/10695028/366964
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      1. USNayan Wadekar
 

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