最近在跟着 WXWinter 学Workflow,收益非浅。 

根据 WXWinter 所提供的关于 会签业务流程 例子,自己也尝试了做一个流程控制,结果在 Persistence 时,出现了一个异常:

{"The execution of the InstancePersistenceCommand named {urn:schemas-microsoft-com:System.Activities.Persistence/command}CreateWorkflowOwner was interrupted by an error."}

找了半天,最后发现原来是数据库里缺少了System.Activities.DurableInstancing支持。

 

 

但这些是什么时候产生的呢?应该会有什么工具可以辅助我们执行相关操作吧。最后在一个老外那找到了一种方式:

http://coding.roecher.de/2010/02/08/could-not-find-stored-procedure-system-activities-durableinstancing-createlockowner/

如果有其他更好的方式,希望能分享一下

打开命令行,例如输入:

osql -E -S ServerName -d DBName -i C:\Windows\Microsoft.NET\Framework\v4.0.30128\SQL\en\SqlWorkflowInstanceStoreSchema.sql
osql -E -S ServerName -d DBName -i C:\Windows\Microsoft.NET\Framework\v4.0.30128\SQL\en\SqlWorkflowInstanceStoreLogic.sql

完成后,我们再到数据库里查看,就可以看到System.Activities.DurableInstancing的东西了。

 

当解决这个问题后,运行时,又出现了另一个异常,错误信息如下:

"The execution of an InstancePersistenceCommand was interrupted because the instance '340e56da-3d32-4ca6-9729-2fb5ed19a0cb' is locked by a different instance owner. This error usually occurs because a different host has the instance loaded. The instance owner ID of the owner or host with a lock on the instance is '954d7075-4937-49fe-9213-b2009c6dbcc1'."

还好, WXWinter 已经给出了 答案 ,我们需要将PersistableIdleAction设为PersistableIdleAction.Unload;

posted on 2010-03-31 17:01  yo  阅读(1667)  评论(2编辑  收藏  举报