检查Quartz.NET中是否存在作业随机失败

Question

当尝试检查Quartz.NET中是否存在作业时，它随机失败并出现以下错误：

Couldn't commit ADO.NET transaction. Transaction not connected, or was disconnected

这是堆栈跟踪：

   at Quartz.Impl.AdoJobStore.JobStoreSupport.CommitConnection(ConnectionAndTransactionHolder cth, Boolean openNewTransaction) in c:\projects\quartznet\src\Quartz\Impl\AdoJobStore\JobStoreSupport.cs:line 3403
   at Quartz.Impl.AdoJobStore.JobStoreSupport.ExecuteInNonManagedTXLock[T](String lockName, Func`2 txCallback, Func`3 txValidator) in c:\projects\quartznet\src\Quartz\Impl\AdoJobStore\JobStoreSupport.cs:line 3562
   at Quartz.Impl.AdoJobStore.JobStoreTX.ExecuteInLock[T](String lockName, Func`2 txCallback) in c:\projects\quartznet\src\Quartz\Impl\AdoJobStore\JobStoreTX.cs:line 76
   at Quartz.Impl.AdoJobStore.JobStoreSupport.ExecuteWithoutLock[T](Func`2 txCallback) in c:\projects\quartznet\src\Quartz\Impl\AdoJobStore\JobStoreSupport.cs:line 3418
   at Quartz.Impl.AdoJobStore.JobStoreSupport.CheckExists(JobKey jobKey) in c:\projects\quartznet\src\Quartz\Impl\AdoJobStore\JobStoreSupport.cs:line 1739
   at Quartz.Core.QuartzScheduler.CheckExists(JobKey jobKey) in c:\projects\quartznet\src\Quartz\Core\QuartzScheduler.cs:line 1399
   at Quartz.Impl.StdScheduler.CheckExists(JobKey jobKey) in c:\projects\quartznet\src\Quartz\Impl\StdScheduler.cs:line 354

我的配置：

        ["quartz.jobStore.type"] = "Quartz.Impl.AdoJobStore.JobStoreTX, Quartz",
        ["quartz.jobStore.driverDelegateType"] = "Quartz.Impl.AdoJobStore.SqlServerDelegate, Quartz",
        ["quartz.jobStore.tablePrefix"] = "QRTZ_",
        ["quartz.jobStore.dataSource"] = "rubis",
        ["quartz.dataSource.rubis.connectionStringName"] = "RubisEntities",
        ["quartz.dataSource.rubis.provider"] = "SqlServer-20",
        ["quartz.jobStore.useProperties"] = "true",
        ["quartz.threadPool.threadCount"] = "20"

我不知道我错过了什么，我找不到总是发生的情况。它随机失败。