OVD 11g Connectivity Performance Causing OAM Intermittent Login Failures. Load Balancer (Cisco) Log Reports: ACE-4-442007: VIP in class: 'myviphost-6501' changed state from INSERVICE to OUTOFSERVICE (Doc ID 2120353.1)

Last updated on MARCH 08, 2017

Applies to:

Oracle Virtual Directory - Version 11.1.1.0 and later
Information in this document applies to any platform.

Symptoms

Oracle Access Manager (OAM) servers connecting to Oracle Virtual Directory (OVD) 11g servers via load balancers (lbr).

OVD connectivity performance causing intermittent login failures in one environment.

Load balancer logs reporting failures to reply with a FIN in response to a FIN from the load balancer:
- After a 5 second pass, the load balancer resets the connection (and marks the session as a failed probe)
- When that happens twice, it results in the load balancer taking server OUTOFSERVICE

This ultimately causes login failures.

Sample load balancer (Cisco) log snippet:

Mar 23 2016 10:58:21 APP: %ACE-4-442001: Health probe myviphost-6501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-6501 changed state to UP
Mar 23 2016 10:58:25 APP: %ACE-4-442001: Health probe myviphost-7501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-7501 changed state to UP
Mar 23 2016 11:14:15 APP: %ACE-4-442002: Health probe myviphost-6501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-6501 changed state to DOWN
Mar 23 2016 11:14:19 APP: %ACE-4-442002: Health probe myviphost-7501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-7501 changed state to DOWN
Mar 23 2016 11:15:25 APP: %ACE-4-442001: Health probe myviphost-6501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-6501 changed state to UP
Mar 23 2016 11:15:29 APP: %ACE-4-442001: Health probe myviphost-7501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-7501 changed state to UP
Mar 23 2016 12:26:54 APP: %ACE-4-442002: Health probe myviphost-6501 detected myloadbalancer2 (interface vlan1201) in serverfarm myviphost-6501 changed state to DOWN
Mar 23 2016 12:27:01 APP: %ACE-4-442002: Health probe myviphost-7501 detected myloadbalancer2 (interface vlan1201) in serverfarm myviphost-7501 changed state to DOWN
Mar 23 2016 12:27:59 APP: %ACE-5-441003: Serverfarm (myviphost-6501) failed in policy_map (myviphost-6501) --> class_map (#class_default_slb) without backup. Number of failovers = 0, number of times back in service = 0
Mar 23 2016 12:27:59 APP: %ACE-4-442007: VIP in class: 'myviphost-6501' changed state from INSERVICE to OUTOFSERVICE
Mar 23 2016 12:27:59 APP: %ACE-5-441003: Serverfarm (myviphost-6501) failed in policy_map (myviphost-6501) --> class_map (#class_default_slb) without backup. Number of failovers = 0, number of times back in service = 0
Mar 23 2016 12:27:59 APP: %ACE-4-442002: Health probe myviphost-6501 detected myloadbalancer1 (interface vlan1201) in serverfarm myviphost-6501 changed state to DOWN


Another similar environment does not experience this problem.

Cause

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