EBS升級到R12.2.4后，進入系統操作老是報以下錯誤：
通過谷歌發現有人遇到相同的問題，並提供了解決方案。
原文地址：http://onlineappsdbaoracle.blogspot.com/2016/05/afterebs-12.html
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:
