When and where should you specify the transaction rollback directives?
您应该在何时何种情况下指定事务回滚指令？
In the case of an error, the transaction logic can specify that the transaction rollback to a savepoint.
在发生错误的情况下，事务逻辑可以指定该事务回滚到某个保存点。
Conversely, application exceptions under EJB 1.0 automatically caused a transaction rollback under certain circumstances.
反过来说，EJB 1.0下发生的应用程序异常在某种环境下会自动导致一个事务回滚。
This is because rollback can easily be confused with the transaction rollback and ABORT is more consistent with other utilities.
这是因为ROLLBACK很容易与事务回滚混淆，而ABORT则与其他实用程序更加一致。
The business process also has a snippet component, which you can use to raise a fault and to demonstrate a global transaction rollback.
业务流程也有一个代码段组件，您可以用它来引发一个故障并演示一个全局事务回滚。
When the execution is false, transaction compensation instead of the inefficient transaction rollback is used to remedy it.
当执行出错时，执行相应的补偿事务以修正执行的结果，从而避免低效的事务回滚。
Since the fault is not handled inside the BPEL process, it will result in the global transaction rollback, consequently undoing what the EmployeeRegistry Web service has done.
由于未在BPEL流程内处理错误，该错误会导致全局事务回滚，因此会撤销EmployeeRegistryWeb服务已执行的操作。
As you can see from Listing 4, if an exception is thrown in either of the update methods, it is the client layer method's responsibility to do the necessary transaction rollback.
从清单4中可以看到，如果任何一个更新方法抛出异常，则客户端层方法将负责执行必要的事务回滚。
Transaction rollback and compensation transactions are two approaches aimed at solving this problem.
事务回滚和补偿事务是解决问题的两种方法。
You can use the transaction-rollback technique to make your database-backed tests run faster.
可以用事务-回滚技术让数据支持的测试运行得更快。
You can use the transaction-rollback technique to make your database-backed tests run faster.
可以用事务-回滚技术让数据支持的测试运行得更快。
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