SA用户（“系统管理员”的简称）是MS SQL服务器的管理者账户。如果忘记服务器管理员账户的密码该怎么办呢？难道要重新安装SQL服务器或放弃所有数据内容吗？不管出于何种原因，如果你忘记了服务器的管理账户密码，并且被告知你无权进行更改，这篇文章将教给你几种重置SQL服务器SA密码的方法。
这些步骤适用于2005、2008、2012及更新的SQL服务器。
步骤
方法 1 的 4:
方法1：从命令提示符中更改SA密码
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1
打开命令提示符，前往SQL服务器，输入命令osql –L。
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2
复制SQL服务器全名，输入：OSQL -S <这里输入服务器的名称> -E。
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3执行以下命令：sp_password NULL, ‘<这里插入新密码>’, ’sa’
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4
完成重置。
方法 2 的 4:
方法2：使用SSMS重置SA密码
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1
打开SSMS管理器。它通常位于开始菜单 -> 所有程序 -> “Microsoft SQL Server 2005” -> 找到“SQL Server Management Studio”程序。
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2
用windows身份验证连接SQL服务器。
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3
打开后，在左侧的对象资源管理器中展开“安全性”，在登录名下找到“sa”用户。右键点击它，选择属性。
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4
在“密码”和“确认密码”栏前方输入新密码，点击确定。
方法 3 的 4:
方法3：使用SQL密码恢复工具重置SA密码
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1
运行SQL密码恢复程序，然后点击“打开”来导入master.mdf文件。
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2
选择SA用户名来重置忘记的SA密码，或选择其它忘记密码的用户名。点击“更改密码”来重置密码。
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3
输入新密码，点击“确定”。
方法 4 的 4:
方法4：当SA已被禁用时
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1
这是一种额外的复杂方案。有时候你会遇到SA被禁用的情况。
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2
使用命令行的-m标签命令，以单个用户身份打开SQL服务器。
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3
以管理员身份运行。
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4
在服务器身份页面，选择系统管理员，然后重置密码。
小提示
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重置SA密码最简单有效的方法是使用SQL密码恢复工具。你可以使用几种SQL密码恢复工具来成功重置SQL的SA密码。如，“SQL Password Geeker”程序、“SQL Password Rescuer”程序。