connection closed

2015-04-01 01:00:00,034 [schedulerFactory_Worker-1] u:/d: ERROR org.enhydra.jdbc.xapool - StandardXADataSource:getFreeConnection ERROR: Failed while autocommiting a con
nection: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 390,159,909 milliseconds ago.  The last pack
et sent successfully to the server was 390,159,909 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring a
nd/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection prope
rty 'autoReconnect=true' to avoid this problem.
[EL Info]: 2015-04-01 01:00:00.104--UnitOfWork(156780926)--Communication failure detected when attempting to perform read query outside of a transaction. Attempting to
retry query. Error was: Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.
Error Code: 0
Call: SELECT APPL_ID, PARM_NM, NMSPC_CD, CMPNT_CD, PARM_DESC_TXT, EVAL_OPRTR_CD, OBJ_ID, PARM_TYP_CD, VAL FROM KRCR_PARM_T WHERE ((((CMPNT_CD = ?) AND (PARM_NM = ?)) AN
D (NMSPC_CD = ?)) AND (APPL_ID = ?))
        bind => [4 parameters bound]
Query: ReadAllQuery(referenceClass=ParameterBo sql="SELECT APPL_ID, PARM_NM, NMSPC_CD, CMPNT_CD, PARM_DESC_TXT, EVAL_OPRTR_CD, OBJ_ID, PARM_TYP_CD, VAL FROM KRCR_PARM_T
 WHERE ((((CMPNT_CD = ?) AND (PARM_NM = ?)) AND (NMSPC_CD = ?)) AND (APPL_ID = ?))").
2015-04-01 01:00:00,303 [schedulerFactory_Worker-1] u:/d: ERROR org.enhydra.jdbc.xapool - StandardXAPoolDataSource:checkThisObject Error java.sql.SQLException in Standa
rdXAPoolDataSource:testThisObject