Check these details and Oracle Enterprise Manager 11G Default Login Page information here. If you are a first time user you will need to register your account or create a new one, otherwise you can login on Oracle Enterprise Manager 11G Default Page with your previous login details. These results are more helpful for you as these are anti checked and also verified by the system. You just need to open the Login page links nd enter your Login details like Login Id and Password and submit the information. If you face any issue in your Oracle Enterprise Manager 11G Default page Login, you can contact us from our Contact Us Page.
https://docs.oracle.com/en/cloud/paas/database-dbaas-cloud/csdbi/access-em-11g-database-control.html
https://superuser.com/questions/113384/i-just-installed-oracle-11g-and-i-cant-figure-out-how-to-log-into-the-enterpris
https://www.daniweb.com/programming/databases/threads/421955/oracle-11g-default-username-and-password-to-start-sqlplus
https://coderanch.com/t/584591/application-servers/login-details-SYSTEM-account-oracle
https://serverfault.com/questions/194533/oracle-10g-default-username-and-password
http://www.geekinterview.com/talk/14468-default-username-password-oracle-10g.html
http://www.oracledbasupport.co.uk/modifying-the-default-login-timeout-value-for-grid-control-10g11g/