爲什麼我的JMS消息橋接在WLS中每30秒停止/啓動

Question

我遇到了一個問題，我的JMS消息橋接似乎每隔30秒由WLS停止並重新啓動。

據我所知，網橋實際上工作正常，並且WLS控制檯將其報告爲「活動，轉發消息」。橋的盡頭都是我所知道的最好的工作。

每30秒出現在我的WLS日誌中的消息如下所示。這六行每次都重複。

####<2011-sep-20 kl 12:48 CEST> <Info> <MessagingBridge> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696279> <BEA-200020> <Bridge "NameOfBridge" is stopped.> 
####<2011-sep-20 kl 12:48 CEST> <Info> <MessagingBridge> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696279> <BEA-200033> <Bridge "NameOfBridge" is obtaining connections to the two adapters.> 
####<2011-sep-20 kl 12:48 CEST> <Info> <Common> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696284> <BEA-000628> <Created "1" resources for pool "eis/jms/WLSConnectionFactoryJNDIXA", out of which "1" are available and "0" are unavailable.> 
####<2011-sep-20 kl 12:48 CEST> <Info> <Common> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696340> <BEA-000628> <Created "1" resources for pool "eis/jms/WLSConnectionFactoryJNDIXA", out of which "1" are available and "0" are unavailable.> 
####<2011-sep-20 kl 12:48 CEST> <Info> <MessagingBridge> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696340> <BEA-200032> <Bridge "NameOfBridge" is configured to disallow degradation of its quality of service in cases where the configured quality of service is unreachable.> 
####<2011-sep-20 kl 12:48 CEST> <Info> <MessagingBridge> <host> <server> <[ACTIVE] ExecuteThread: '20' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1316515696340> <BEA-200030> <Bridge "NameOfBridge" is configured to work in "Exactly-once" mode, and it is actually working in "Exactly-once" mode.> 

通過配置細算，這似乎與唯一的編號爲「事務超時」被設置爲30。這意味着網橋直接打開一個事務，然後失敗（因爲我配置了錯誤的東西，或者只是因爲沒有任何反應），然後關閉事務/網橋並重新啓動它。我不會期待這種行爲，但也許這是它的工作原理？

我正在使用WLS 10.3.0.0。

更新：從​​3210相關配置：

<messaging-bridge> 
    <name>NameOfBridge</name> 
    <target>servercluster</target> 
    <source-destination>NameOfBridgeLocalDest</source-destination> 
    <target-destination>NameOfBridgeRemoteDest</target-destination> 
    <selector></selector> 
    <quality-of-service>Exactly-once</quality-of-service> 
    <started>true</started> 
</messaging-bridge> 
<jms-bridge-destination> 
    <name>NameOfBridgeLocalDest</name> 
    <adapter-jndi-name>eis.jms.WLSConnectionFactoryJNDIXA</adapter-jndi-name> 
    <classpath></classpath> 
    <connection-factory-jndi-name>JmsXA</connection-factory-jndi-name> 
    <initial-context-factory>weblogic.jndi.WLInitialContextFactory</initial-context-factory> 
    <connection-url></connection-url> 
    <destination-jndi-name>queue/NameOfQueue</destination-jndi-name> 
    <destination-type>Queue</destination-type> 
</jms-bridge-destination> 
<jms-bridge-destination> 
    <name>NameOfBridgeRemoteDest</name> 
    <adapter-jndi-name>eis.jms.WLSConnectionFactoryJNDIXA</adapter-jndi-name> 
    <classpath></classpath> 
    <connection-factory-jndi-name>ConnectionFactory</connection-factory-jndi-name> 
    <initial-context-factory>org.jnp.interfaces.NamingContextFactory</initial-context-factory> 
    <connection-url>jnp://server:port</connection-url> 
    <destination-jndi-name>queue/NameOfQueue</destination-jndi-name> 
    <destination-type>Queue</destination-type> 
</jms-bridge-destination> 

Answer 1

As per this Oracle support document（需要Oracle帳戶），這是異步JMS橋樑的正常行爲。

文檔中的問題被描述爲：

與WebLogic Server 9.2和更高版本;在配置了JMS並設置了JMS消息傳遞橋的域中，記錄JMS消息橋顯示每隔30秒斷開連接並重新連接到源目標。

從Oracle的角度來看，這是正常的，預期的行爲：當有源目的地沒有消息

這是一種輪詢機制，通常發生，而當消息傳遞橋處於空閒狀態。

由於這是異步網橋的預期，停止它的方式是禁用JMS消息傳遞橋的「異步模式啓用」選項，這將停止輪詢。