我们的Java应用程序运行在RHEL 8.5操作系统上。我们使用的是JBoss版本的4.2.1 GA。我们的应用程序运行了几个月。最近，我们反复遇到以下问题，在jboss.log文件中占用了近5 GB，我们正在试图找到根本原因。
WARN [JDBCSupport] SQLException caught, SQLState null code:0- assuming deadlock detected, try:18
org.jboss.util.NestedSQLException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: 6a288574:63f3:63d001d8:7c1fff status: ActionStatus.ABORT_ONLY >); - nested throwable: (org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: 6a288574:63f3:63d001d8:7c1fff status: ActionStatus.ABORT_ONLY >))
at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:94)
at org.jboss.messaging.core.impl.JDBCSupport$JDBCTxRunner.execute(JDBCSupport.java:383)
at org.jboss.messaging.core.impl.JDBCSupport$JDBCTxRunner.executeWithRetry(JDBCSupport.java:407)
at org.jboss.messaging.core.impl.JDBCPersistenceManager.reapUnreferencedMessages(JDBCPersistenceManager.java:2357)
at org.jboss.messaging.core.impl.JDBCPersistenceManager.access$1000(JDBCPersistenceManager.java:78)
at org.jboss.messaging.core.impl.JDBCPersistenceManager$Reaper.run(JDBCPersistenceManager.java:2381)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
Caused by: org.jboss.resource.JBossResourceException: Could not enlist in transaction on entering meta-aware object!; - nested throwable: (javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: 6a288574:63f3:63d001d8:7c1fff status: ActionStatus.ABORT_ONLY >)
at org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionReconnected(TxConnectionManager.java:343)
at org.jboss.resource.connectionmanager.BaseConnectionManager2.reconnectManagedConnection(BaseConnectionManager2.java:518)
at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:399)
at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842)
at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88)
... 7 more
Caused by: javax.transaction.SystemException: java.lang.Throwable: Unabled to enlist resource, see the previous warnings. tx=TransactionImple < ac, BasicAction: 6a288574:63f3:63d001d8:7c1fff status: ActionStatus.ABORT_ONLY >
at org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener$TransactionSynchronization.checkEnlisted(TxConnectionManager.java:744)
at org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener.enlist(TxConnectionManager.java:577)
at org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionReconnected(TxConnectionManager.java:337)
... 11 more
05:51:09,339 WARN [JDBCSupport] Trying again after a pause
05:51:09,531 WARN [loggerI18N] [com.arjuna.ats.internal.jta.transaction.arjunacore.enliststarterror] [com.arjuna.ats.internal.jta.transaction.arjunacore.enliststarterror] TransactionImple.enlistResource - XAResource.start returned: XAException.XAER_PROTO for < 131075, 31, 29, 1-6a288574:63f3:63d001d8:7c20036a288574:63f3:63d001d8:7c2006^
ERROR [STDERR] org.jboss.resource.connectionmanager.JBossLocalXAException: Trying to start a new tx when old is not complete! old: < 131075, 31, 29, 1-6a288574:63f3:63d001d8:7bf8476a288574:63f3:63d001d8:7bf84a^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ >, new < 131075, 31, 29, 1-6a288574:63f3:63d001d8:7c20036a288574:63f3:63d001d8:7c2006^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ >, flags 0
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.TxConnectionManager$LocalXAResource.start(TxConnectionManager.java:886)
05:51:09,531 ERROR [STDERR] at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.java:774)
05:51:09,531 ERROR [STDERR] at com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionImple.enlistResource(TransactionImple.java:497)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener$TransactionSynchronization.enlist(TxConnectionManager.java:773)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.TxConnectionManager$TxConnectionEventListener.enlist(TxConnectionManager.java:564)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.TxConnectionManager.managedConnectionReconnected(TxConnectionManager.java:337)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.BaseConnectionManager2.reconnectManagedConnection(BaseConnectionManager2.java:518)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:399)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:842)
05:51:09,531 ERROR [STDERR] at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:88)
05:51:09,531 ERROR [STDERR] at org.jboss.messaging.core.impl.JDBCSupport$JDBCTxRunner.execute(JDBCSupport.java:383)
05:51:09,531 ERROR [STDERR] at org.jboss.messaging.core.impl.JDBCSupport$JDBCTxRunner.executeWithRetry(JDBCSupport.java:407)
05:51:09,531 ERROR [STDERR] at org.jboss.messaging.core.impl.JDBCPersistenceManager.reapUnreferencedMessages(JDBCPersistenceManager.java:2357)
05:51:09,531 ERROR [STDERR] at org.jboss.messaging.core.impl.JDBCPersistenceManager.access$1000(JDBCPersistenceManager.java:78)
05:51:09,531 ERROR [STDERR] at org.jboss.messaging.core.impl.JDBCPersistenceManager$Reaper.run(JDBCPersistenceManager.java:2381)
05:51:09,531 ERROR [STDERR] at java.util.TimerThread.mainLoop(Timer.java:555)
05:51:09,531 ERROR [STDERR] at java.util.TimerThread.run(Timer.java:505)
ERROR [JDBCSupport] Retried 25 times, now giving up
05:51:06,096 ERROR [JDBCPersistenceManager] Failed to reap
java.lang.IllegalStateException: Failed to excecute transaction
at org.jboss.messaging.core.impl.JDBCSupport$JDBCTxRunner.executeWithRetry(JDBCSupport.java:423)
at org.jboss.messaging.core.impl.JDBCPersistenceManager.reapUnreferencedMessages(JDBCPersistenceManager.java:2357)
at org.jboss.messaging.core.impl.JDBCPersistenceManager.access$1000(JDBCPersistenceManager.java:78)
at org.jboss.messaging.core.impl.JDBCPersistenceManager$Reaper.run(JDBCPersistenceManager.java:2381)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
请让我们澄清以下问题，
- 为什么这个错误反复发生?
- 在什么情况下会出现上述错误?
- 如何防止这个错误?
你的问题把我难住了。你的问题发生在JBoss Messaging，但是JBoss Messaging没有包含在JBoss 4.2.1 GA中。
无论如何，您的JBoss消息传递(JMS服务)不能正常工作。最有可能的是，它是完全离线的。我建议从数据库中清除所有的JBoss Messaging表，并从一个干净的数据库开始。
在服务器的deploy/messaging目录中，应该有一个*-persistence-service.xml文件。这将配置数据库存储。如果将CreateTablesOnStartup设置为true，那么JBoss Messaging将自动创建表。也许只是重命名现有的表，或者进行备份，如果你喜欢。
*-persistence-service.xml文件将包含数据库的连接细节，表将被命名为JBM。