Group Circular RelationShip on Active Directory is Preventing to Access Analytics URL
(Doc ID 2832953.1)
Last updated on JANUARY 17, 2022
Applies to:Oracle WebLogic Server - Version 10.3.6 and later
Information in this document applies to any platform.
On production, some users can't log in to the Analytics URL, causing hogging threads on WLS bi_server1.
Two authentication providers were defined in the config/config.xml file, the embedded LDAP, and an external Active Directory, however, the issue is more related to the AD, where most of the users/groups were defined.
This issue was seen suddenly affecting consistently a set of users.
Customer was requested to provide a set of 3 thread dumps 20 seconds apart were collected on bi_server1 while the problematic users were trying to login into Analytics, finding a suspect thread:
From this thread the following information was obtained:
- This particular thread was blocking another 23 threads.
- As part of the problem, there would be a recursive call to weblogic.security.providers.authentication.LDAPAtnLoginModuleImpl.searchGroupLimited(LDAPAtnLoginModuleImpl.java:556) related to the authentication process when dealing with groups.
- A similar problem was reported some years ago affecting an old version of WLS: WebLogic Managed Server Segmentation Fault and Core Dump Calling searchGroupUnlimited (<Note 1302204.1>)
- Enabling ATN debug flag should provide more information to isolate the problematic groups.
No changes were reported from the WLS perspective.
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