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QSqlDatabase::transaction and other open transaction, block or fail?
原标题:

I am dealing with Sql Server and Oracle through Qt, when using QSqlDatabase::transaction() on a database connection. When another user/connection has a transaction open on the same database does the transaction() call block until the other transaction is finished or fail ?

最佳回答

Transactions should only block each other if they are working on the same data (normally at the record level).

Generally they wait until the transactions locking those records is complete, and then they proceed. In some circumstances they can be programmed to error/fail if they have to wait for a lock.

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