sql-server - 既不支持隔离级别也不支持它的加强

Question

使用

Microsoft SQL Server 2008 (SP1)

尝试像这样创建交易:

OleDbConnection con;
OleDbTransaction transaction = null;
...
transaction = con.BeginTransaction(IsolationLevel.Snapshot);

并得到错误:

System.Data.OleDb.OleDbException (0x8004D008): Neither the isolation level nor a strengthening of it is supported.
   at System.Data.OleDb.OleDbTransaction.ProcessResults(OleDbHResult hr)
   at System.Data.OleDb.OleDbTransaction.BeginInternal(ITransactionLocal

transaction) at System.Data.OleDb.OleDbConnectionInternal.BeginTransaction(IsolationLevel isolationLevel) at System.Data.OleDb.OleDbConnection.BeginTransaction(IsolationLevel isolationLevel)

我确保在 SQL Server Management Studio 中运行以下命令:

ALTER DATABASE mydb SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
ALTER DATABASE mydb  SET ALLOW_SNAPSHOT_ISOLATION ON;
ALTER DATABASE mydb  SET READ_COMMITTED_SNAPSHOT ON;
ALTER DATABASE mydb  SET MULTI_USER;

有什么我想念的吗？

Answer 1

用 SqlClient 替换 OleDb(正如 Oded 在评论中所建议的那样)。

或者，在开始事务之前执行此 SQL 命令:

SET TRANSACTION ISOLATION LEVEL SNAPSHOT;