Login flow in R12.2 and basic troubleshooting
Login flow in R12.2
- When a HTTP request is made for EBS, the request is received by the Oracle HTTP Server (OHS).
- When the configuration of OHS is for a resource that needs to be processed by Java, such as logging into EBS, the OHS configuration will redirect the request to the Web Logic Server (WLS) Java process (OACore in this case).
- WLS determines the J2EE application that should deal with the request, which is called “oacore”.
- This J2EE application needs to be deployed and available for processing requests in order for the request to succeed. The J2EE application needs to access a database and does this via a datasource which is configured within WLS.
When the EBS login works OK, the browser will be redirected to various different URLs in order for the login page to be displayed. The page flow below shows the URLs that will be called to display the login page:
EBS Login URL
Redirects to local login page
Renders the login page
The URLs after the user enters username and password, then clicks the “login” button are shown below
Renders user home page
Once the users home page is displayed, the logout flow also redirects to several different URL before returning to the login page:
Logout icon has been clicked
Redirects to the login page
Renders login page again