ejb3/src/main/java/org/jboss/as/ejb3/timerservice/persistence/database/DatabaseTimerPersistence.java
private void setNodeName(final TimerState timerState, PreparedStatement statement, int paramIndex) throws SQLException {
        if(timerState == TimerState.IN_TIMEOUT || timerState == TimerState.RETRY_TIMEOUT) {
            statement.setString(paramIndex, nodeName);
        } else {
            statement.setNull(paramIndex, Types.VARCHAR);
        }
    }
private void setNodeName(final TimerState timerState, PreparedStatement statement, int paramIndex) throws SQLException {
        if(timerState == TimerState.IN_TIMEOUT || timerState == TimerState.RETRY_TIMEOUT) {
            statement.setString(paramIndex, nodeName);
        } else {
            statement.setNull(paramIndex, Types.VARCHAR);
        }
    }
Set the node name for persistence if the state is IN_TIMEOUT or RETRY_TIMEOUT to show which node is current active for the timer.