Cannot access OTBI after recreated same username

Summary

user cannot access OTBI after delete ad create sama username

Content

i cannot access OTBI 

if i access form pod/analytics error message : 

You are not currently signed in to the Oracle BI Server.

If you have already signed in, your connection might have timed out, or a communications or server error may have occurred.

To sign in again, click here. If the problem persists, please contact the site's administrator.

and if i access from pod/xmlpserver error message : 

Error 500--Internal Server Error

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1: 10.5.1 500 Internal Server Error The server encountered an unexpected condition which prevented it from fulfilling the request.