TSQL 查找服务器是在动态端口还是静态端口上侦听

Question

使用 TSQL，如何确定 MS SQL 服务器（任何版本）是配置为使用静态端口还是使用动态端口？

我正在尝试使用的脚本：

DECLARE @TcpPort VARCHAR(5)
        ,@RegKey VARCHAR(100)

IF @@SERVICENAME !='MSSQLSERVER'
    BEGIN
        SET @RegKey = 'SOFTWARE\Microsoft\Microsoft SQL Server\' + @@SERVICENAME + '\MSSQLServer\SuperSocketNetLib\Tcp\IPAll'
    END
    ELSE
    BEGIN
        SET @RegKey = 'SOFTWARE\MICROSOFT\MSSQLSERVER\MSSQLSERVER\SUPERSOCKETNETLIB\TCP\IPAll'
    END

EXEC master..xp_regread
    @rootkey = 'HKEY_LOCAL_MACHINE'
    ,@key = @RegKey
    ,@value_name = 'TcpPort'
    ,@value = @TcpPort OUTPUT

EXEC master..xp_regread
    @rootkey = 'HKEY_LOCAL_MACHINE'
    ,@key = @RegKey
    ,@value_name = 'TcpDynamicPorts'
    ,@value = @TcpPort OUTPUT

SELECT @TcpPort AS PortNumber
        ,@@SERVERNAME AS ServerName
        ,@@SERVICENAME AS ServiceName

Answer 1

您可以从错误日志中确定实例正在使用哪个端口，但不能确定它是静态的还是动态的。

EXEC xp_readerrorlog 1, 1, 'Server is listening'

另一种方法是通过 xp_regread 从注册表中读取。

DECLARE 
    @StaticPort NVARCHAR(512)
    , @DynamicPort NVARCHAR(512)

EXEC xp_regread
    'HKEY_LOCAL_MACHINE'
    , 'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.1\MSSQLServer\SuperSocketNetLib\Tcp\IPAll'
    , 'TcpPort'
    , @StaticPort OUTPUT

EXEC xp_regread
    'HKEY_LOCAL_MACHINE'
    , 'SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.1\MSSQLServer\SuperSocketNetLib\Tcp\IPAll'
    , 'TcpDynamicPorts'
    , @DynamicPort OUTPUT

SELECT
    @StaticPort AS StaticPort
    , @DynamicPort AS DynamicPort