When trying to access the DLP Enforce console in any web browser, you get a 404 and/or screen that constantly refreshes.
There are few different reasons this error may occur. Most of the time it is due to a Database connectivity issue.
One cause is that the password for either Protect or SysDBA account has expired.
In this use case, the customer was actually using the System account instead of the Oracle Protect account indicating that they had not run the Oracle Protect User Script