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Troubleshooting: SQL Server连接错误解决方法列表

原创 SQL Server 作者:kitesky 时间:2011-01-26 10:14:59 0 删除 编辑
SQL Server连接错误解决方法列表[@more@]

1. Connection Forcibly Closed

This error may occur when connecting to SQL Server using TCP/IP.
Error message:A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.)

Related cause and solution:

(1). SynAttackProtect
SQL Server Database Engine running on Windows Server 2003 Service Pack 1 and later, Windows may drop connections if the requests arrive faster than SQL Server can service them. This is a security feature of Windows Server 2003 Service Pack 1 and later, which implements a finite queue for incoming TCP connection requests.

(2) windows SNP feature, include TCP Chimney Offload, RSS and TCPA

How to fix

(1). Edit registry
(2). Command

netsh int tcp show globalshows the offload setting in the OS.

netsh int tcp set global chimney=enabledenables the offload.

2. Transport-level Error When Querying DatabaseErrorMessage:A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The specified network name is no longer available.)

Related cause and solution:The error is being caused by a timeout exception for long running queries. In previous versions of Visual Studio .NET, the exception was properly represented as a exception with a timeout description.
Set the commandtimeout property of the command object to an appropriate value. Use a value of zero to wait without an exception being thrown.

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