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Spring + Hibernate transaction takes 25 seconds doing nothing

I have a Java application using Spring + Hibernate. I have a fairly simple transaction that just recently started to execute a REALLY long execution (~ 25 seconds), although it does not make any unclear / complex queries, and according to the log, these 25 seconds are spent in Hiberante code. The browser just hangs there, waiting for it to end ...

A transaction is performed using annotations, using org.springframework.orm.hibernate3.LocalSessionFactoryBean as a factory session and org.springframework.orm.hibernate3.HibernateTransactionManager as a transaction manager.

I use Memcached for the Hibernate cache, but this should not be a problem, according to the log, at least it doesn't apply to the cache in the meantime ....

I present the corresponding fragment of the log:

 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Found thread-bound Session [org.hibernate.impl.SessionImpl@a04a093] for Hibernate transaction
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Using transaction object [org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject@35ca1808]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Creating new transaction with name [com.quebicoca.api.service.PaymentService.buy]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Preparing JDBC Connection of Hibernate Session [org.hibernate.impl.SessionImpl@a04a093]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Exposing Hibernate transaction as JDBC transaction [com.mysql.jdbc.JDBC4Connection@66efd0ce]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionSynchronizationManager] Bound value [org.springframework.jdbc.datasource.ConnectionHolder@a75b92e] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1420ca8b] to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionSynchronizationManager] Initializing transaction synchronization
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionInterceptor] Getting transaction for [com.quebicoca.api.service.PaymentService.buy]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@3538ce1b] for key [org.hibernate.impl.SessionFactoryImpl@c4be179] bound to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Found thread-bound Session [org.hibernate.impl.SessionImpl@a04a093] for Hibernate transaction
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionSynchronizationManager] Retrieved value [org.springframework.jdbc.datasource.ConnectionHolder@a75b92e] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@1420ca8b] bound to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Using transaction object [org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject@36d0805f]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|HibernateTransactionManager] Participating in existing transaction
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionInterceptor] Getting transaction for [com.quebicoca.api.service.PaymentService.buy]
 [DEBUG] [2010-10-09 @ 07:25:30] [http-8080-12|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@3538ce1b] for key [org.hibernate.impl.SessionFactoryImpl@c4be179] bound to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|HashCodeKeyStrategy] Transformed key [UserOrder_holders] to hashCode [-1959252437]
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|HashCodeKeyStrategy] Final cache key: [org.hibernate.cache.UpdateTimestampsCache:0:-1959252437]
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|MemcachedCache] Memcache.set(org.hibernate.cache.UpdateTimestampsCache:0:-1959252437)
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|SpyMemcache] MemcachedClient.set(org.hibernate.cache.UpdateTimestampsCache:0:-1959252437)
 ...
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|DispatcherServlet] Successfully completed request
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|TransactionSynchronizationManager] Removed value [org.springframework.orm.hibernate3.SessionHolder@5862af29] for key [org.hibernate.impl.SessionFactoryImpl@c4be179] from thread [http-8080-25]
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|OpenSessionInViewFilter] Closing single Hibernate Session in OpenSessionInViewFilter
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|SessionFactoryUtils] Closing Hibernate Session
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|ExceptionTranslationFilter] Chain processed normally
 [DEBUG] [2010-10-09 @ 07:25:55] [http-8080-25|SecurityContextPersistenceFilter] SecurityContextHolder now cleared, as request processing completed
 [DEBUG] [2010-10-09 @ 07:25:56] [http-8080-12|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@3538ce1b] for key [org.hibernate.impl.SessionFactoryImpl@c4be179] bound to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:56] [http-8080-12|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@3538ce1b] for key [org.hibernate.impl.SessionFactoryImpl@c4be179] bound to thread [http-8080-12]
 [DEBUG] [2010-10-09 @ 07:25:56] [http-8080-12|HibernateTemplate] Found thread-bound Session for HibernateTemplate
 [DEBUG] [2010-10-09 @ 07:25:56] [http-8080-12|HashCodeKeyStrategy] Transformed key [UserOrder] to hashCode [-1966312925]
 [DEBUG] [2010-10-09 @ 07:25:56] [http-8080-12|HashCodeKeyStrategy] Final cache key: [org.hibernate.cache.UpdateTimestampsCache:0:-1966312925]

The last thing registered up to 25 second space:

[DEBUG] [2010-10-09 @ 07: 25: 30] [http-8080-12 | TransactionSynchronizationManager] The restored value [ org.springframework.orm.hibernate3.SessionHolder@3538ce1b ] for the key [org.hibernate. impl.SessionFactoryImpl@c4be179 ] is bound to a stream [http-8080-12]

I was the only one registered during this log, I closed access for everyone except myself from Apache, running before Tomcat.

Any ideas are welcome.

EDIT:

The class "Order" was added in accordance with the request:

@Entity
@Table(name = "UserOrder")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Order {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @ManyToOne(optional = false)
    private Deal deal;
    @CollectionOfElements
    private Map<String, Integer> holders;
    @ManyToOne(optional = false)
    private User user;
    @org.hibernate.annotations.Type(type = "org.joda.time.contrib.hibernate.PersistentDateTime")
    @Column(nullable = false)
    private DateTime buyingDate;
    @Column(nullable = false)
    @Enumerated(EnumType.STRING)
    private OrderState state;
    private BigDecimal payedWithUserCredit;
    @Column(nullable = false)
    private int quantity;
    @Column(nullable = false)
    private String secret;

    private boolean mailSent;

    @Enumerated(EnumType.STRING)
    private PaymentMethod paymentMethod;
}

EDIT 2:

Suggestions Afeter Spy Memcached may have something to do, I decided to return to EHCache.

It turned out even worse (1:16 hanging). Magazine:

 [DEBUG] [2010-10-13 @ 04:28:47] [http-8080-1|HibernateTransactionManager] Triggering beforeCommit synchronization
 [DEBUG] [2010-10-13 @ 04:28:47] [http-8080-1|HibernateTransactionManager] Triggering beforeCompletion synchronization
 [DEBUG] [2010-10-13 @ 04:28:47] [http-8080-1|HibernateTransactionManager] Initiating transaction commit
 [DEBUG] [2010-10-13 @ 04:28:47] [http-8080-1|HibernateTransactionManager] Committing Hibernate transaction on Session [org.hibernate.impl.SessionImpl@20360e46]
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|HibernateTransactionManager] Triggering afterCommit synchronization
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|HibernateTransactionManager] Triggering afterCompletion synchronization
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|TransactionSynchronizationManager] Clearing transaction synchronization
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|TransactionSynchronizationManager] Removed value [org.springframework.jdbc.datasource.ConnectionHolder@30c2ea0b] for key [org.springframework.jdbc.datasource.DriverManagerDataSource@614a616] from thread [http-8080-1]
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|HibernateTransactionManager] Not closing pre-bound Hibernate Session [org.hibernate.impl.SessionImpl@20360e46] after transaction
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@839c6c7] for key [org.hibernate.impl.SessionFactoryImpl@6fbae5f5] bound to thread [http-8080-1]
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|DriverManagerDataSource] Creating new JDBC DriverManager Connection to [jdbc:mysql://localhost/quebicoca]
 [DEBUG] [2010-10-13 @ 04:30:03] [http-8080-1|TransactionSynchronizationManager] Retrieved value [org.springframework.orm.hibernate3.SessionHolder@839c6c7] for key [org.hibernate.impl.SessionFactoryImpl@6fbae5f5] bound to thread [http-8080-1]

I completely lost ...

+5
1

!

@Transactional - :

orderDAO.save(order);
user.addOrder(order);

, .

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Hibernate , , ( , UserOrder_holder). -, FOREVER ( ). , , , 17 ... .

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+2

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