SQL * plus logon in Oracle

I. Problem description: After Oracle is installed locally, you need to connect SQL * plus in a few cases. This window will pop out when you log on locally (this window cannot be logged in or out, of course, it may also be my configuration problem): the user name and password are usually sys and root (of course, different settings will have different results), but I don't understand that the host string is Shenma Dongdong, then a series of login failures... 2. Solution: log in from the webpage and get the url: http: // localhost: 1158/em Z login? Http://www.bkjia.com/kf/ware/vc/ "target =" _ blank "class =" keylink "> Other" t it? Show my picture to us all: