java.sql.SQLException: Invalid state, the Connection object is closed in JTDS JDBC driver

Issue

• We are facing this issue for first time, unexpectedly.

JBWEB000065: HTTP Status 500 - PreparedStatementCallback; uncategorized SQLException for SQL [QUERY]; SQL state [HY010]; error code [0]; Invalid state, the Connection object is closed.; nested exception is java.sql.SQLException: Invalid state, the Connection object is closed.
JBWEB000309: type JBWEB000066: Exception report

JBWEB000068: message PreparedStatementCallback; uncategorized SQLException for SQL [QUERY]; SQL state [HY010]; error code [0]; Invalid state, the Connection object is closed.; nested exception is java.sql.SQLException: Invalid state, the Connection object is closed.

JBWEB000069: description JBWEB000145: The server encountered an internal error that prevented it from fulfilling this request.

JBWEB000070: exception 

org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [QUERY]; SQL state [HY010]; error code [0]; Invalid state, the Connection object is closed.; nested exception is java.sql.SQLException: Invalid state, the Connection object is closed.
    org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
    org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
    org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:602)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:636)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:661)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:701)
    org.springframework.jdbc.object.SqlQuery.execute(SqlQuery.java:112)
    org.springframework.jdbc.object.SqlQuery.execute(SqlQuery.java:122)
    org.apache.wicket.request.AbstractRequestCycleProcessor.onRuntimeException(AbstractRequestCycleProcessor.java:224)
    org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:120)
    org.apache.wicket.RequestCycle.step(RequestCycle.java:1408)
    org.apache.wicket.RequestCycle.steps(RequestCycle.java:1465)
    org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
    org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
    org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:319)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
        .....................

JBWEB000071: root cause 

java.sql.SQLException: Invalid state, the Connection object is closed.
    net.sourceforge.jtds.jdbc.ConnectionJDBC2.checkOpen(ConnectionJDBC2.java:1494)
    net.sourceforge.jtds.jdbc.ConnectionJDBC2.prepareStatement(ConnectionJDBC2.java:2215)
    org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnection.doPrepareStatement(BaseWrapperManagedConnection.java:738)
    org.jboss.jca.adapters.jdbc.BaseWrapperManagedConnection.prepareStatement(BaseWrapperManagedConnection.java:724)
    org.jboss.jca.adapters.jdbc.WrappedConnection.prepareStatement(WrappedConnection.java:405)
    org.springframework.jdbc.core.PreparedStatementCreatorFactory$PreparedStatementCreatorImpl.createPreparedStatement(PreparedStatementCreatorFactory.java:245)
    org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:580)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:636)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:661)
    org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:701)
    org.springframework.jdbc.object.SqlQuery.execute(SqlQuery.java:112)
    org.springframework.jdbc.object.SqlQuery.execute(SqlQuery.java:122)
    .................