Navigation Stops Working with Empty JavaScript Alerts (Doc ID 1508861.1)

Last updated on FEBRUARY 01, 2022

Applies to:

Symptoms

Navigation gets broken intermittently in Spaces right after restart. It is not clear what triggers the issue.
When it happens then Navigation fails for all users in all browsers (Chrome, IE, Firefox.). All they get is a blank Javascript popup window (alert) but the page does not load.
The issue is specific to navigation objects that come from a page query. Navigating to Page links works fine.
The issue occurs even in a brand new Space, with all the default navigation, skin, template and Resource Catalog settings.

It was concluded that the issue happens when accessing the navigation first before Spaces after restart. The navigation is implemented by a custom Portal using REST calls to the navigation in Spaces.
The issue seems to only occur when the navigation uses a Subspace query that retutns at least 1 Space.

Restarting Spaces solves the problem.

Steps to Reproduce
==============
1. Login to Spaces as Administrator

2. Create a new Space (i.e. TestSpace)

3. Create a new SubSpace in TestSpace (i.e. SubSpace)

4. Click on Administration

5. Click on Resources

6. Click on Navigations

7. Click on Create

8. Specify a name and click Create

9. Select Edit -> Show for the navigation

10. Select Edit -> Edit to edit the new navigation

11. Add a new Spaces Query

12. Specify the Space that you created with a subspace (TestSpace) on the
Target with the help of the magnifier icon

13. Click OK

14. Click on Preview

15. Open the Spaces Query and make sure it displays the SubSpace

16. Click OK to Save the navigation



17. Click on About for the new navigation model

18. Click on * next to Metadata file to get the full path

19. Copy the full path without the .xml ending (i.e.
/oracle/webcenter/siteresources/scopedMD/<FOLDER_ID>/navigation/<NAVIGATION_ID>/Navigation) and paste it
to an editor

20. Restart Webcenter

21. Clear the following from your browser:

Cookies
Cache
Active Logins
Offline Website Data

22. Navigate to /rest/api/resourceIndex Authenticate as weblogic

23. Obtain utoken from the xml response (i.e.FMxljkFtDWjW6vflmJ96zywo5fR3_w**)

24. Build the rest navigation url in form of:
<BASE_URL>/<NAVIGATION_MODEL_METADATA_PATH>/resources?utoken=<UTOKEN>

Where:
PLACEHOLDER Example Value
BASE_URL http://<HOST>/rest/api/navigations
UTOKEN FMxljkFtDWjW6vflmJ96zywo5fR3_w**
NAVIGATION_MODEL_METADATA_PATH
/oracle/webcenter/siteresources/scopedMD/<FOLDER_ID>/navigation/<NAVIGATION_ID>/Navigation
(carefull should not end up in .xml)

25. Navigate to rest navigation url (i.e.
http://<HOST>/rest/api/navigations/oracle/webcenter/siteresources/scopedMD/<FOLDER_ID>/<NAVIGATION_ID>/Navigation/resources?utoken=FMxljkFtDWjW6vflmJ96zywo5fR3_w**)

26. Navigate to /webcenter

27. Login
Notice that the Activities page of the Home Space appears, but there is no
visual indication (i.e Activities is not with Blue background color) about
the current page. This is already part of the problem

28. Empty alert should shows up when clicking links in the navigation, no
matter if in the home space or in the Root spaces that was created or
anywhere else

29. From now on, the dynamic navigation will just display a blank popup and
they will not work until a Spaces restart

Cause

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