我们正在我的sql数据库中使用struts2应用程序。几个月后，我们得到了java线程转储，应用程序停止响应。
线程转储如下：“http-0.0.0-8443-98”daemon prio=10 tid=0x0000000043229000 nid=0x54be waiting for monitor entry[0x00007f8b3b8b0000]java.lang.thread.state:blocked（在对象监视器上）at org.hsqldb.session.setautocommit（未知源）
“http-0.0.0-8443-179”daemon prio=10 tid=0x00007f8b3015c000 nid=0x571f waiting for monitor entry[0x00007f8b2faf9000]java.lang.thread.state:blocked（在对象监视器上）at org.apache.tomcat.util.net.jioendpoint.recyclewrkerthread（jioendpoint）。java:724)
“http-0.0.0-8443-175”daemon prio=10 tid=0x00007f8b30163800 nid=0x5713 in object.wait（）[0x00007f8b3443b000]java.lang.thread.state:在java.lang.object.wait（本机方法）处等待（在对象监视器上）
“task-thread-for-com.mchange.v2.async。threadpertaskasynchronousrunner@2d2fa195“daemon prio=10 tid=0x000000005a06b800 nid=0x5631等待监视器条目[0x00007f8b34c4b000]java.lang.thread.state:阻塞（在对象监视器上）位于org.hsqldb.databasemanager.getdatabase（未知源）
“http-0.0.0-8443-127”守护进程prio=10 tid=0x000000005c334800 nid=0x54e0等待监视器条目[0x00007f8b37c76000]java.lang.thread.state:阻塞（在对象监视器上）在org.hsqldb.session.execute（未知源）
“defaultquartzscheduler\u worker-3”prio=10 tid=0x00007f8b714d4000 nid=0x5ac6 waiting for monitor entry[0x00007f8bed917000]java.lang.thread.state:blocked（在对象监视器上）at com.octopus.scheduler.tasks.synccertificateactivationthreads.activate（synccertificateactivationthreads）。java:62)
对于数据库，我们使用

public class ConnectionManager {

/* Object stores the value of lock */
private static final Object lock = new Object();

/**
 * This method is used to get connection object holding the connection with
 * the database. This connection object is created using
 * 
 * @return Connection
 */
public Connection getDBConnection() {

    Connection conn = null;
    try {
        InitialContext initialContext = new InitialContext();

        IEntityManager manager = new EntityManager();

        String dataSource = manager.getDatsourceInstance(application,
                coreProduct);
        DataSource ds = (DataSource) initialContext.lookup("java:"
                + dataSource);

        if (ds != null) {
            conn = ds.getConnection();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return conn;
}

/**
 * This method is use to generate the random id.
 * 
 * @return
 */
public String generateId() {
    return UUID.randomUUID().toString().substring(0, 13);
}

/**
 * This method is use to generate the id which contains the current system
 * time.
 * 

 */
public synchronized String generateNewId() {
    String id = "";
    synchronized (lock) {
        // id = String.valueOf(System.currentTimeMillis());
        id = String.valueOf(System.nanoTime());
    }
    return id;
}

由于这些应用程序停止运行，需要哪些参数、标准和配置来减少此类转储。