java - 获取 Threaddump java.lang.Thread.State: BLOCKED (on object monitor) at org.hsqldb.Session.setAutoCommit(Unknown Source)

Question

我们在我的 SQL 数据库中使用 Struts2 应用程序。几个月后，我们收到了 Java 线程转储，应用程序停止响应。

线程转储如下：“http-0.0.0.0-8443-98”守护进程prio=10 tid=0x0000000043229000 nid=0x54be waiting for monitor entry [0x00007f8b3b8b0000] java.lang.Thread.State: BLOCKED (on object monitor) at org.hsqldb.Session.setAutoCommit（未知来源）

“http-0.0.0.0-8443-179”守护进程prio=10 tid=0x00007f8b3015c000 nid=0x571f 等待监视器条目[0x00007f8b2faf9000] java.lang.Thread.State: BLOCKED (on object monitor) at org.apache.tomcat.util .net.JioEndpoint.recycleWorkerThread(JioEndpoint.java:724)

“http-0.0.0.0-8443-175”守护进程prio=10 tid=0x00007f8b30163800 nid=0x5713 in Object.wait() [0x00007f8b3443b000] java.lang.Thread.State: WAITING (on object monitor) at java.lang.Object .wait（本机方法）

“Task-Thread-for-com.mchange.v2.async.ThreadPerTaskAsynchronousRunner@2d2fa195”守护进程 prio=10 tid=0x000000005a06b800 nid=0x5631 等待监视器条目 [0x00007f8b34c4b000] java.lang.Thread.State: BLOCKED（在对象监视器上）在 org.hsqldb.DatabaseManager.getDatabase（未知来源）

“http-0.0.0.0-8443-127”守护进程prio=10 tid=0x000000005c334800 nid=0x54e0 等待监视器条目[0x00007f8b37c76000] java.lang.Thread.State: BLOCKED (on object monitor) at org.hsqldb.Session.execute （来源不明）

“DefaultQuartzScheduler_Worker-3”prio=10 tid=0x00007f8b714d4000 nid=0x5ac6 等待监视器条目 [0x00007f8bed917000] java.lang.Thread.State: BLOCKED（在对象监视器上）在 com.octopus.scheduler.tasks.SyncCertificateActivationThreads.activate(SyncCertificateActivationThreads.爪哇：62）

对于数据库，我们正在使用

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执行，需要哪些参数、标准、配置来减少此类转​​储。

标签： javagarbage-collection