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探讨:如何查看和获取SQL Server实例名

时间：2020-09-01 08:57 编辑：来源：阅读：
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摘要：探讨:如何查看和获取SQL Server实例名

[b]一、查看實例名時可用[/b] [b]1、服务—SQL Server(实例名)，默认实例为(MSSQLSERVER)[/b] 或在连接企业管理时-查看本地实例 [b]2、通過注冊表 [/b]HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Microsoft SQL Server/InstalledInstance [b]3、用命令 [/b]sqlcmd/osql sqlcmd -L sqlcmd -Lc osql -L 获取可用實例,以下舉一個例子，根據自己情況改

[u]复制代码[/u] 代码如下:

DECLARE @Table TABLE ( instanceName  sysname NULL)
insert @Table EXEC sys.xp_cmdshell 'sqlcmd -Lc'

--LEFT(@@serverName,CHARINDEX('/',@@serverName+'/')-1) 替代為本機名就行了 , 根據實例命名規則判斷

SELECT * FROM @Table WHERE instanceName LIKE   LEFT( @@serverName , CHARINDEX ( '/' , @@serverName + '/' )- 1)+ '%'

[b]二、[/b] [b]--1. [/b]SELECT SERVERPROPERTY('InstanceName') [b]--2 [/b]sp_helpserver [b]--3 [/b]select @@SERVERNAME [b]--4 [/b]SELECT * FROM SYS.SYSSERVERS [b]--5 [/b]SELECT * FROM SYS.SERVERS [b]三、[/b] EXECUTE xp_regread @rootkey='HKEY_LOCAL_MACHINE', @key='SOFTWARE/Microsoft/Microsoft SQL Server/Instance Names/SQl', @value_name='MSSQLSERVER' [b]四、[/b] Select Case When SERVERPROPERTY ('InstanceName') Is Null Then @@SERVERNAME Else SERVERPROPERTY ('InstanceName') End [b]五、在本地或网络得到所有实例名[/b] 1、You can do with registry reading , like my code

[u]复制代码[/u] 代码如下:

using System;
using Microsoft.Win32;
namespace SMOTest
{
    class Program
    {
      static void Main()
      {
        RegistryKey rk = Registry.LocalMachine.OpenSubKey(@"SOFTWARE/Microsoft/Microsoft SQL Server");
        String[] instances = (String[])rk.GetValue("InstalledInstances");
        if (instances.Length > 0)
        {
           foreach (String element in instances)
           {
              if (element == "MSSQLSERVER")
                 Console.WriteLine(System.Environment.MachineName);
              else
                 Console.WriteLine(System.Environment.MachineName + @"/" + element);
           }
        }
      }
    }
}

2、You can use SQLDMO.dll to retrieve the list of SQL Server instances. The SQLDMO.dll can be found from the "C:/Program Files/Microsoft SQL Server/80/Tools/Bin" folder. Refer this assembly in your project and the following snippet would return a List Object containing the sql server instances.

[u]复制代码[/u] 代码如下:

public static List GetSQLServerInstances()
{
NameList sqlNameList = null;
Application app = null;
var sqlServers = new List();
try
{
app = new ApplicationClass();
sqlNameList = app.ListAvailableSQLServers();
foreach (string sqlServer in sqlNameList)
sqlServers.Add(sqlServer);
}
catch(Exception ex)
{
//play with the exception.
}
finally
{
if (sqlNameList != null)
sqlNameList = null;
if (app != null)
app = null;
}
return sqlServers;
}

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