Win7下面PL/SQL无法使用

今天发现在使用PL/SQL时，无法登陆。经过群里朋友的帮忙，最后圆满解决，现留个记录以便以后可查。
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1、右键PL/SQL的运行图标，然后选择以管理员身份运行
，
2、登录时以正常的
普通用户身份
Normal
登录；