I have deployed an EAR in Wildfly-8.2.0.Final application server. After some hours of inactivity, I am getting the below error in the application server error logs:

Caused by: java.sql.SQLException - JZ0C0: Connection is already closed.

   at com.sybase.jdbc4.jdbc.ErrorMessage.raiseError(Unknown Source)

   at com.sybase.jdbc4.jdbc.SybConnection.checkConnection(Unknown Source)

   at com.sybase.jdbc4.jdbc.SybConnection.setAutoCommit(Unknown Source)

   at org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnection.checkTransaction(BaseWrapperManagedConnection.java:893)

   at org.jboss.jca.adapters.jdbc.WrappedConnection.checkTransaction(WrappedConnection.java:1594)

   at org.jboss.jca.adapters.jdbc.WrappedConnection.prepareStatement(WrappedConnection.java:398)

   at com.test.it.TestConnection.prepareStatement(TestConnection.java:1045)

Please find below the datasource subsystem definition used in standalone-full-ha.xml.

<subsystem xmlns="urn:jboss:domain:datasources:2.0">
   <datasources>
   <datasource jta="true" jndi-name="java:/SybaseDB" pool-name="SybaseDB" enabled="true" use-java-context="true" spy="false" use-ccm="true">
   <connection-url>jdbc:sybase:Tds:id_address:port/DBname</connection-url>
   <driver-class>com.sybase.jdbc4.jdbc.SybDriver</driver-class>
   <connection-property name="HOSTNAME">TestHost</connection-property>
   <connection-property name="SQLINITSTRING">set quoted_identifier,forceplan off</connection-property>
   <connection-property name="LANGUAGE">us_english</connection-property>
   <connection-property name="CHARSET">iso_1</connection-property>
   <connection-property name="APPLICATIONNAME">TestApp</connection-property>
   <connection-property name="IS_CLOSED_TEST">select 1</connection-property>
   <connection-property name="PACKETSIZE">1024</connection-property>
   <driver>SybaseDB</driver>
   <transaction-isolation>TRANSACTION_READ_COMMITTED</transaction-isolation>
   <pool>
   <min-pool-size>5</min-pool-size>
   <initial-pool-size>5</initial-pool-size>
   <max-pool-size>200</max-pool-size>
   <prefill>false</prefill>
   <use-strict-min>false</use-strict-min>
   <flush-strategy>FailingConnectionOnly</flush-strategy>
   </pool>
   <security>
   <security-domain>EncryptDBPassword</security-domain>
   </security>
   <validation>
   <check-valid-connection-sql>select 1</check-valid-connection-sql>
   <use-fast-fail>true</use-fast-fail>
   </validation>
   <timeout>
   <blocking-timeout-millis>15000</blocking-timeout-millis>
   <idle-timeout-minutes>30</idle-timeout-minutes>
   </timeout>
   <statement>
   <track-statements>false</track-statements>
   </statement>
   </datasource>
   <drivers>
   <driver name="SybaseDB" module="jdbc.jconn4"/>
   </drivers>
   </datasources>
   </subsystem>

Could anyone please help me whether I am missing an attribute in datasource definition which gives me this error.