在多个数据库上实现事务 [英] Implementing transactions over multiple databases

问题描述

我在多个数据库上执行数据更改，我想实现一个将覆盖所有更改的事务。

I am performing data changes on multiple databases, and I want to implement a transaction that will cover all of the changes.

这是我目前有的： / p>

This is what I currently have:

try
{
    db[1].begintransaction();
    db[1].ExecuteNonQuery();

    db[2].begintransaction();
    db[2].ExecuteNonQuery();

    ...

    db[N].begintransaction();
    db[N].ExecuteNonQuery();

    // will execute only if no exception raised during the process
    for (int a = 0; a < N; a++)
    {
        db[a].Commit();// what if there is an error/exception here
    }
}
catch
{
    for (int a = 0; a < N; a++)
    {
        db[a].RollBack();
    }
}

问题是，在 Commit（）（见注释）中发生异常。有没有更好的方法来完成这个？

The problem is that the above would fail horribly if an exception happens during a Commit() (see the comment). Is there any better way of accomplishing this?

推荐答案

使用 TransactionScope 类这样：

using (TransactionScope ts = new TransactionScope())
{
    //all db code here

    // if an error occurs jump out of the using block and it will dispose and rollback

    ts.Complete();
}

如有必要，TransactionScope类将自动转换为分布式事务。

The TransactionScope class will automatically convert to a distributed transaction if necessary.

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