一、查看实例名称是否可用
1、服务—SQL Server(实例名)，默认实例为(MSSQLSERVER)或在连接企业管理时-查看本地实例。
2、通过注冊表
3、用命令
sqlcmd/osql
sqlcmd -L
sqlcmd -Lc
osql -L
获取可用实例的sql语句：
二、
--1.
SELECT SERVERPROPERTY('InstanceName')
--2
sp_helpserver
--3
select @@SERVERNAME
--4
SELECT * FROM SYS.SYSSERVERS
--5
SELECT * FROM SYS.SERVERS
三、
四、
五、在本地或网络得到所有实例名
1、You can do with registry reading , like my code
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.
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;
}