oracle数据库实例名怎么查看

实例名，也就是当前数据库的实例名

那么v$instance视图中的instance_name就是当前实例的实例名

其实还有其他方式，比如在系统层面查询实例名的方式(linux的用户参数也可以)，但是因为可能同时启动两个数据库实例，而你当前的数据库，可能并不是系统层面显示的实例名，所以这种方式还是不那么靠谱的。所以instance个人认为是最好的方式。

查看实例名时可用 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、通过注册表 HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Microsoft SQL Server/InstalledInstance

3、用命令

sqlcmd/osql sqlcmd -L sqlcmd -Lc osql -L

获取可用实例,以下举一个例子，根据自己情况改

DECLARE @Table TABLE ( instanceName sysname NULL)

insert @Table EXEC sys.xp_cmdshell 'sqlcmd -Lc'

--LEFT(@@serverName,CHARINDEX('/',@@serverName+'/')-1) 替代为本机名就行了 , 根据实例命名规则判断

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

二、

--1. SELECT SERVERPROPERTY('InstanceName')

--2 sp_helpserver

--3 select @@SERVERNAME

--4 SELECT * FROM SYS.SYSSERVERS

--5 SELECT * FROM SYS.SERVERS

三、

EXECUTE xp_regread @rootkey='HKEY_LOCAL_MACHINE',

@key='SOFTWARE/Microsoft/Microsoft SQL Server/Instance Names/SQl',

@value_name='MSSQLSERVER'

四、

Select Case When SERVERPROPERTY ('InstanceName') Is Null Then @@SERVERNAME Else SERVERPROPERTY ('InstanceName') End

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 Systemusing 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

}

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