Spring Batch UNKNOWN 状态

Question

有一个执行一些繁重操作的批处理。它运行大约 11-12 小时。
之后它移动到 UNKNOWN 状态。

我有一个问题，批处理何时会转移到 UNKNOWN 状态？

以下是堆栈跟踪。

org.springframework.transaction.TransactionSystemException: Could not roll back JDBC transaction; nested exception is java.sql.SQLException: Protocol violation
        at org.springframework.jdbc.datasource.DataSourceTransactionManager.doRollback(DataSourceTransactionManager.java:285)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.processRollback(AbstractPlatformTransactionManager.java:845)
        at org.springframework.transaction.support.AbstractPlatformTransactionManager.rollback(AbstractPlatformTransactionManager.java:822)
        at org.springframework.transaction.support.TransactionTemplate.rollbackOnException(TransactionTemplate.java:161)
        at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:134)
        at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:264)
        at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:76)
        at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:367)
        at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:214)
        at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:143)
        at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:284)
        at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:195)
        at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:135)
        at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:61)
        at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:60)
        at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:144)
        at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:124)
        at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:135)
        at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:282)
        at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:121)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:909)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.sql.SQLException: Protocol violation
        at oracle.jdbc.driver.T4CTTIfun.receive

谢谢
阿迪亚

Answer 1

只有当回滚不成功时，批处理作业才会进入 UNKNOWN 状态，使作业处于不确定状态，这就是这里发生的情况。这里真正的问题是……为什么回滚不成功？