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EM 13.4 : Accessing Target Database and Health Overview Using Firefox Displays Blank Pages (Doc ID 2701093.1)

Last updated on MARCH 08, 2021

Applies to:

Enterprise Manager for Oracle Database - Version 13.4.0.0.0 and later
Information in this document applies to any platform.

Symptoms

In Enterprise Manager (EM) Cloud Control, trying to access the below EM Pages using the latest firefox Browser(Version 79.0) displays blank screen:

EM Console > Target DB home page > Administration > Tablespaces
or
EM Console > Target DB home page > Schema > Users

 

EM Console > Setup > Manage Cloud Control > Health Overview

All these pages are working fine using Google chrome , IE and Edge browsers

Observed the below stack from emoms.trc:

2020-08-14 14:26:40,078 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG ctlr.EMPagePhaseListener logp.251 - diagpatch EMPagePhaseListener getPageUrl = https://<OMS-Hostname>:<port>/em/faces/db-homepage-home?type=oracle_database&target=<DB TARGET NAME>&Adf-Window-Id=wk9c7xe5&Adf-Page-Id=2
2020-08-14 14:26:40,082 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.AccessControlManager logp.251 - request uri /em/faces/db-homepage-home
2020-08-14 14:26:40,082 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.AccessControlManager logp.251 - Requested URL is :em/faces/db-homepage-home
2020-08-14 14:26:40,083 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.AccessControlManager logp.251 - List of required privilege to check is:{} Required privilege expression is:null
2020-08-14 14:26:40,083 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.AccessControlManager logp.251 - Creating premission descriptor for Permission Type:EM Classoracle.sysman.emSDK.sec.authz.perms.EMPermission Privilege Name: ACCESS_EM
2020-08-14 14:26:40,084 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.EMAuthzService logp.251 - In Bulk checkPermission :1
2020-08-14 14:26:40,084 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG authz.EMAuthzService logp.251 - Em perm count=1; Target perm count=0
2020-08-14 14:26:40,084 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG conn.ConnectionService getConnection.621 - Audit Session GUID from thread local = ACD673A6125E6DB9E0531905FC0AF278
2020-08-14 14:26:40,084 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG jdbc.ConnectionCache _printConnectionStat.834 - DefaultPool connections active/available: 0/6
2020-08-14 14:26:40,085 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG conn.FGAConnectionCache getFGAConnection.268 - auditFlag = false auditGuid (hash) = ACD673A6125E6DB9E0531905FC0AF278 auditGuid (inp) ACD673A6125E6DB9E0531905FC0AF278
2020-08-14 14:26:40,087 [[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG jdbc.ConnectionWrapper prepareStatement.800 - prepareStatement has been called with sql string from 89 name: [ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)' hash code of Oracle Connection: 0 hash code of Connection Wrapper: 1642742345 hash code of EMSecurityContext 1058795216 false with stack :
oracle.sysman.emSDK.util.jdk.ThreadUtil.getCurrentThreadStack(ThreadUtil.java:39)
oracle.sysman.emSDK.core.util.jdbc.ConnectionWrapper.prepareStatement(ConnectionWrapper.java:807)
oracle.sysman.emSDK.core.util.jdbc.ConnectionWrapper.setE2EMetrics(ConnectionWrapper.java:3798)
oracle.sysman.util.jdbc.UIConnectionListener.invokeDbmsAppInfo(UIConnectionListener.java:106)
oracle.sysman.util.jdbc.DefaultConnectionListener.connectionOpened(DefaultConnectionListener.java:238)
oracle.sysman.util.jdbc.ConnectionListenerManagerImpl.processConnectionEvent(ConnectionListenerManagerImpl.java:142)
oracle.sysman.emSDK.core.util.jdbc.ConnectionCache.processConnectionEvent(ConnectionCache.java:624)
oracle.sysman.emSDK.core.util.jdbc.ConnectionWrapper._fireOpenedEvent(ConnectionWrapper.java:2243)
oracle.sysman.emSDK.core.util.jdbc.ConnectionWrapper.<init>(ConnectionWrapper.java:276)
oracle.sysman.emSDK.svc.conn.FGAConnection.<init>(FGAConnection.java:175)

Cause

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In this Document
Symptoms
Cause
Solution


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