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EM12c: Connection To The Server Has Failed: Redirects to Login Page. (Doc ID 1518199.1)

Last updated on APRIL 28, 2018

Applies to:

Enterprise Manager Base Platform - Version 12.1.0.2.0 and later
Information in this document applies to any platform.

Symptoms

Multi OMS behind SLB (F5 bigIP SLB)
Navigate around the 12c Console and click on particular link/Tab, it route  back to login screen with following popup message:
"Connection To The Server Has Failed"


Click on OK, user require to login again.

Verified that the  https console port persistence is 3600 second but user get this message less than 60 minutes.

 

Verified that frequent dummy logins were going to different OMS.

Accessing the  https://SLBname.domain.com:port#/dummy   (/dummy instead of /em)  the URL on diff browser and every  manual refresh , was re-directing to  different OMS(s)

From OMS1 server

$ tail -f /gc_inst/WebTierIH7/diagnostics/logs/OHS/ohs7/access_log  | grep -i dummy


10.10.10.10 - - [04/Dec/2012:02:36:41 -0600] "GET /dummy HTTP/1.1" 404 188
[ecid: -] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101
Firefox/5.0]
10.10.10.10 - - [04/Dec/2012:02:37:05 -0600] "GET /dummy HTTP/1.1" 404 188
[ecid: -] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101
Firefox/5.0]

 
From OMS2 server
$ tail -f/gc_inst/WebTierIH10/diagnostics/logs/OHS/ohs10/access_log  | grep -i dummy

10.10.10.10 - - [04/Dec/2012:02:37:45 -0600] "GET /dummy HTTP/1.1" 404 188
[ecid: -] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101
Firefox/5.0]
10.10.10.10 - - [04/Dec/2012:02:39:48 -0600] "GET /dummy HTTP/1.1" 404 188
[ecid: -] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101
Firefox/5.0

 Above symptom shows that, every refresh on browser is passing request to different oms.

Verified the access_log entries for actual issue when popup  message redirected to the login page.
From OMS1 server
$ tail -f /gc_inst/WebTierIH9/diagnostics/logs/OHS/ohs9/access_log  | grep -i 'em/faces/logon/core-uifwk-console-login'

10.10.10.100 - - [04/Dec/2012:01:21:46 -0600] "GET
/em/faces/logon/core-uifwk-console-login HTTP/1.1" 200 2202 [ecid:
1.004o06ruyxMDsXCLNEp2ie0002P60005Qy;kXjE1ZDLIPJOj5PRj6POZLRSjCRRbVQRj3RRmLPBpPQPrRPBZVQRnVOR_T8RjNPQiG] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0)
Gecko/20100101 Firefox/5.0]
10.10.10.100 - - [04/Dec/2012:01:21:46 -0600] "GET
/em/faces/logon/core-uifwk-console-login?_afrLoop=2763958825541375&_afrWindowMode=0&_afrWindowId=null HTTP/1.1" 200 14868 [ecid:
1.004o06rwn_lDsXCLNEp2ie0002P60005R0;kXjE1ZDLIPJOj5PRj6POZLRSjCRRbVQRj3RRmLPBpPQPrRPBZVQRnVOR_T8RjNPQiG] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0)
Gecko/20100101 Firefox/5.0]
 

From OMS2 server
$ tail -f /gc_inst/WebTierIH10/diagnostics/logs/OHS/ohs10/access_log  | grep -i 'em/faces/logon/core-uifwk-console-login'

10.10.10.100 - - [04/Dec/2012:01:23:21 -0600] "GET
/em/faces/logon/core-uifwk-console-login HTTP/1.1" 200 2202 [ecid:
1.004o06xci6W6uHCLNEd9ie0002Ba0000tW;kXjE1ZDLIPJOj5PRj6POZLRSjCRRbVQRj3RRmLPBpPQPrRPBZVQRnVOR_T8RjNPQiG] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0)
Gecko/20100101 Firefox/5.0]
10.10.10.100 - - [04/Dec/2012:01:23:23 -0600] "GET
/em/faces/logon/core-uifwk-console-login HTTP/1.1" 200 2203 [ecid:
1.004o06xjjEd6uHCLNEd9ie0002Ba0003eC;kXjE1ZDLIPJOj5PRj6POZLRSjCRRbVQRj3RRmLPBpPQPrRPBZVQRnVOR_T8RjNPQiG] [User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:5.0)
Gecko/20100101 Firefox/5.0]
10.10.10.100 - - [04/Dec/2012:01:23:24 -0600] "GET
/em/faces/logon/core-uifwk-console-login?_em.coBM=/console/jobs/runDetails%3FexecId%3DD001EAC34380FE73E040B20AEC412B63%26showExpended%3Dtrue%26_em.coIFR%3Dtrue&_adf.ctrl-s

 
Above logs shows , when Login page displayed and it was routed to different OMS.
 



Cause

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In this Document
Symptoms
Cause
Solution
References


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