After EBS 12.2.5 Upgrade, the login page is not accessible. When accessing the EBS home page, it throws the below error

“ERROR: URL validation failed. The error could have been caused through the use of the browser's navigation buttons ( the browser Back button or refresh, for example). If the error persists, Please contact system administrator “ 

The following errors are reported in the  forms_server log :

javax.naming.NameNotFoundException: While trying to lookup 'jdbc.VR1225' didn't find subcontext 'jdbc'. Resolved ''; remaining name :'jdbc/VR1225'

This error is because the forms_server was missing in the Datasources target.

Follow the below steps to resolve the issue:

Login to the weblogic console

1)     Click on “Lock and Edit”

2)     Navigate to Domain structure --> Services -->Data sources

Here in the EBSDataSource targets, you should see both oacore_cluster1 and forms_cluster1.

forms_cluster1 was missing in the targets. Add it to the EBSdatasource target list

3)     Click on the EBSDatasource and then go to the Targets section.

In this page, check the box for forms_cluster1.

1)     Save and activate the changes.

After the changes, EBSDatasource target will be as below: