Why OPEN JPA Connection is getting Timeout in PROD System ?

Issue

• User is facing one issue in our PROD environment.
• User is using Open JPA for data persistence. Facing below exception intermittently.

<openjpa-2.3.0-r422266:1540826 fatal general error> org.apache.openjpa.persistence.PersistenceException: IO Error: Connection timed out {prepstmnt  [code=17002, state=08006] MY QUERY HERE
FailedObject:
                at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4974)
                at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4934)
                at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:134)
                at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:116)
                at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:68)
                at org.apache.openjpa.jdbc.kernel.SelectResultObjectProvider.handleCheckedException(SelectResultObjectProvider.java:155)
                at org.apache.openjpa.lib.rop.EagerResultList.<init>(EagerResultList.java:40)
                at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1251)
                at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:1007)
                at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:863)
                at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:794)
                at org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:542)
                at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:275)
                at org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:291)
                at sun.reflect.GeneratedMethodAccessor292.invoke(Unknown Source)
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_75]
                at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_75]
                at org.apache.aries.proxy.impl.ProxyHandler$1.invoke(ProxyHandler.java:54)
                at org.apache.aries.proxy.impl.ProxyHandler.invoke(ProxyHandler.java:119)
                at Proxy4182d0d7_ce00_4ba5_b0ec_e6789dc7ae62.findResubmitApplications(Unknown Source)
                at
                test.validate(DBTestApp.java:32)[92:test-compensation:1.0.8.RELEASE]
                at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.7.0_75]
                at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)[:1.7.0_75]
                at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_75]
                at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_75]
                at org.apache.camel.component.bean.MethodInfo.invoke(MethodInfo.java:407)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.component.bean.MethodInfo$1.doProceed(MethodInfo.java:278)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.component.bean.MethodInfo$1.proceed(MethodInfo.java:251)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:166)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.Pipeline.process(Pipeline.java:118)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.loadbalancer.QueueLoadBalancer.process(QueueLoadBalancer.java:43)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:105)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.processor.loadbalancer.LoadBalancerSupport.process(LoadBalancerSupport.java:87)[145:org.apache.camel.camel-core:2.12.0.redhat-611412]
                at org.apache.camel.component.quartz2.CamelJob.execute(CamelJob.java:52)[158:org.apache.camel.camel-quartz2:2.12.0.redhat-611412]
                at org.quartz.core.JobRunShell.run(JobRunShell.java:202)[280:org.quartz-scheduler.quartz:2.2.1]
                at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)[280:org.quartz-scheduler.quartz:2.2.1]
Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: IO Error: Connection timed out {prepstmnt 877424065 MY QUERY HERE [code=17002, state=08006]
                at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:219)
                at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.wrap(LoggingConnectionDecorator.java:203)
                at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator.access$700(LoggingConnectionDecorator.java:59)
                at org.apache.openjpa.lib.jdbc.LoggingConnectionDecorator$LoggingConnection$LoggingPreparedStatement.executeQuery(LoggingConnectionDecorator.java:1118)
                at org.apache.openjpa.lib.jdbc.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:268)
                at org.apache.openjpa.jdbc.kernel.JDBCStoreManager$CancelPreparedStatement.executeQuery(JDBCStoreManager.java:1801)
                at org.apache.openjpa.lib.jdbc.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:258)
                at org.apache.openjpa.jdbc.sql.SelectImpl.executeQuery(SelectImpl.java:501)
                at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:426)
                at org.apache.openjpa.jdbc.sql.SelectImpl.execute(SelectImpl.java:384)
                at org.apache.openjpa.jdbc.kernel.SelectResultObjectProvider.open(SelectResultObjectProvider.java:94)
                at org.apache.openjpa.lib.rop.EagerResultList.<init>(EagerResultList.java:34)
                ... 37 more
2015-07-14 16:15:25,669 | ERROR | tion-18_Worker-5 | DefaultErrorHandler              | rg.apache.camel.util.CamelLogger  215 | 145 - org.apache.camel.camel-core - 2.12.0.redhat-611412 | Failed delivery for (MessageId: ID-prolapp07-34194-1436867377166-39-298 on ExchangeId: ID-prolapp07-34194-1436867377166-39-299). Exhausted after delivery attempt: 1 caught: <openjpa-2.3.0-r422266:1540826 fatal general error> org.apache.openjpa.persistence.PersistenceException: IO Error: Connection timed out {prepstmnt 264271107 MY QUERY HERE [code=17002, state=08006]

• Below is user's camel blueprint for the same.

                <?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/blueprint"
       xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.0.0"
       xmlns:ext="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.0.0"
       xmlns:enc="http://karaf.apache.org/xmlns/jasypt/v1.0.0"
       xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">

       <cm:property-placeholder persistent-id="testdatasource" />

       <camelContext trace="false" xmlns="http://camel.apache.org/schema/blueprint"/>

       <bean id="dbcp" destroy-method="close"
              class="org.apache.commons.dbcp.BasicDataSource">
              <property name="driverClassName" value="${fuse.oracle.driverclass}" />
              <property name="url" value="${fuse.oracle.url}" />
              <property name="username" value="${fuse.oracle.username}" />
              <property name="password" value="${fuse.oracle.password}" />
              <property name="poolPreparedStatements" value="${fuse.oracel.poolpreparedstatements}" />
              <property name="initialSize" value="${fuse.oracle.initialsize}" />
              <property name="maxActive" value="${fuse.oracle.maxactive}" />
              <property name="maxIdle" value="${fuse.oracle.maxidle}" />
              <property name="minIdle" value="${fuse.oracle.minidle}" />
              <property name="maxWait" value="${fuse.oracle.maxwait}" />
       </bean>

       <service interface="javax.sql.DataSource" ref="dbcp">
              <service-properties>
                     <entry key="osgi.jndi.service.name" value="jdbc/oracled" />
                     <entry key="datasource.name" value="Oracle" />
              </service-properties>
       </service>
</blueprint>

• Following are configurations within Testdatasource.cfg.

fuse.oracle.driverclass = oracle.jdbc.driver.OracleDriver
fuse.oracle.url = host
fuse.oracle.username=username
fuse.oracle.password=password
fuse.oracel.poolpreparedstatements=true
fuse.oracle.initialsize=25
fuse.oracle.maxactive=75
fuse.oracle.maxidle=50
fuse.oracle.minidle=2
fuse.oracle.maxwait=60000