EM 12c: Database Target Discovery in Enterprise Manager 12c Cloud Control Using a Guided Process Displays a Blank Screen after Selecting the Hostname (for non-cluster) or Cluster Host ( for RAC)
Last updated on OCTOBER 28, 2015
Applies to:
Enterprise Manager for Oracle Database - Version 12.1.0.1.0 and laterInformation in this document applies to any platform.
Symptoms
Discovering a single instance or cluster database with the guided process fails to display the results of the discovery; instead, it shows a blank Screen.
Choosing another menu option allows the user to navigate away from the blank page.
The .../gc_inst/user_projects/domains/GCDomain/servers/EMGC_OMS1/logs/EMGC_OMS1-diagnostics.log file shows the following error:
[2014-08-13T15:17:26.405-04:00] [EMGC_OMS2] [NOTIFICATION] [J2EE JSP-00008] [oracle.j2ee.jsp] [tid: [ACTIVE].ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] [userId: XYZ125] [ecid: 00508UZQj^WAtHq5ONo2yd0006zq000IT9,0:1] [APP: emgc] [URI: /em/faces/db-discovery-guided-task-flow/db-discovery-guided-search-criteria] unable to dispatch JSP page: The following exception occurred:.[[
java.lang.IllegalArgumentException: Illegal id: lfProduction DR-DG
at org.apache.myfaces.trinidad.component.UIXComponentBase._throwBadId(UIXComponentBase.java:1564)
Note: the generic form of the log file location is this:
<EM_INSTANCE_BASE>/user_projects/domains/<domain_name>/servers/<SERVER_NAME>/logs/<SERVER_NAME>-diagnostics.log
Changes
An Administration Group/Hierarchy is being implemented with customized values for the parameters under Target Properties.
The changes were made with the emcli command option "modify_lifecycle_stage_name".
Cause
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