Question

I see that after 1 hour of running, Oracle Connection Pool throws exceptions

” SQLException Ocurred:Invalid or Stale Connection found in the Connection Cache”

Here is the properties file:

<bean id="datasource" class="oracle.jdbc.pool.OracleDataSource" destroy-method="close">
    <property name="URL" value="${local.url}" />
    <property name="user" value="${local.username}" />
    <property name="password" value="${local.password}" />
    <property name="connectionProperties">
    <props>
        <prop key="includeSynonyms">true</prop>
    </props>
    </property>
        <property name="connectionCachingEnabled" value="true"/>
        <property name="connectionCacheProperties">
            <props>
                <prop key="PropertyCheckInterval">60</prop>         <!-- 1 min -->
                <prop key="ValidateConnection">true</prop>
                <prop key="MinLimit">2</prop>
                <prop key="MaxLimit">25</prop>
                <prop key="InitialLimit">2</prop>
                <prop key="ConnectionWaitTimeout">60</prop>         <!-- 1 min -->
                <prop key="InactivityTimeout">1800</prop>           <!-- 30 mins -->
                <prop key="AbandonedConnectionTimeout">600</prop>   <!-- 10 mins -->
            </props>
        </property>
    </bean>

Can somebody tell me why this is failing after 1 hour, even though the transactions are active.

Answer 1

I was not using multi-threading and it was failing. Also, we need to configure the num of threads to atleast the min number of connections. Otherwise the connections become stale and throw exceptions