Question

我正在使用wso2 bps 2.1.2来运行简单的bpel进程，并在循环中逐个调用树调用。循环大约一百次。问题是有时进程在运行状态下挂起。在日志中我收到错误：

[2013-03-25 14:44:17,897] ERROR - BpelEngineImpl - Scheduled job failed; jobDetail=JobDetails( instanceId: 14109433 mexId: null processId: null type: TIMER channel: 11513 correlatorId: null correlationKeySet: null retryCount: null inMem: false detailsExt: {})
java.lang.IllegalArgumentException: No such channel; id=11513
    at org.apache.ode.jacob.vpu.ExecutionQueueImpl.findChannelFrame(ExecutionQueueImpl.java:205)
    at org.apache.ode.jacob.vpu.ExecutionQueueImpl.consumeExport(ExecutionQueueImpl.java:232)
    at org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.importChannel(JacobVPU.java:369)
    at org.apache.ode.jacob.JacobObject.importChannel(JacobObject.java:47)
    at org.apache.ode.bpel.engine.BpelRuntimeContextImpl$5.run(BpelRuntimeContextImpl.java:964)
    at sun.reflect.GeneratedMethodAccessor44.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
    at java.lang.reflect.Method.invoke(Method.java:611)
    at org.apache.ode.jacob.vpu.JacobVPU$JacobThreadImpl.run(JacobVPU.java:451)
    at org.apache.ode.jacob.vpu.JacobVPU.execute(JacobVPU.java:139)
    at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.execute(BpelRuntimeContextImpl.java:879)
    at org.apache.ode.bpel.engine.BpelRuntimeContextImpl.timerEvent(BpelRuntimeContextImpl.java:968)
    at org.apache.ode.bpel.engine.BpelProcess.handleJobDetails(BpelProcess.java:478)
    at org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:560)
    at org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:445)
    at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:537)
    at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:531)
    at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:284)
    at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:239)
    at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:531)
    at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:515)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:314)
    at java.util.concurrent.FutureTask.run(FutureTask.java:149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)
    at java.lang.Thread.run(Thread.java:738)

我找不到有关此错误的任何有用信息。我正在使用oracle数据库。我试图用：

修改bps.xml

<tns:OpenJPAConfig>
  <tns:property name="openjpa.FlushBeforeQueries" value="true"/>
  <!-- added this line as for https://wso2.org/jira/browse/CARBON-7500  (use also Oracle 11g Driver!!) -->
  <tns:property name="openjpa.jdbc.DBDictionary" value="oracle(batchLimit=0)"/>
</tns:OpenJPAConfig>

但这没有帮助。

过程非常简单，看起来像这样：

<forEach counterName="count"  parallel="no" >

    < doXslTransform …>
    <wait 1s>
    <invoke ...>

    <doXslTransform …>
    <wait 1s>
    <invoke ...>

    < doXslTransform …>
    <wait 1s>
    <invoke ...>
</forEach>

如何解决“没有这样的频道”错误？

谢谢Tomek

Answer 1

我们确定了导致此问题的一个问题并修复了该问题。这是由于BPS中嵌入的ode运行时缺少流程实例锁定。我们发现了这个问题并修复了它。

https://issues.apache.org/jira/browse/ODE-989

https://wso2.org/jira/browse/BPS-218

如果您可以将示例场景附加到jira，它将帮助我们添加另一个测试用例。该修复程序已在主干中提供，将在下一版本中提供。

此致 Nandika

Answer 2

我从进程中删除了等待，一切都开始正常工作。似乎在＆lt;中存在一些错误。等等＆gt; WSO2 BPS中的活动2.1.2。在BPS 3.0.0中，等待正在工作的接缝。

Wso2 BPS：没有这样的频道错误

2 个答案: