"This is a writable tree with No root." Error When Create or Delete Reports Server or Reports Tools in Reports 12c

(Doc ID 2147435.1)

Last updated on NOVEMBER 13, 2017

Applies to:

Oracle Reports Developer - Version 12.2.1.0.0 and later
Information in this document applies to any platform.

Symptoms

Using Reports 12c, attempting to create/delete Reports Tools or standalone Reports Server fails with error:

ERROR

wls:/base_domain/serverConfig/> createReportsServerInstance(instanceName='rep_server',machine='AdminServerMachine')
Location changed to edit custom tree. This is a writable tree with No root.
For more help, use help('editCustom')

Traceback (innermost last):
File "", line 1, in ?
File "/C:/oracle/Middleware/Oracle_Home/ReportsServerComponent/plugins/wlst/repserver-wlst-dependencies.jar!/wlstScriptDir/OracleReportsServer.py", line 22, in createReportsServerInstance
File "/C:/oracle/Middleware/Oracle_Home/ReportsServerComponent/plugins/wlst/repserver-wlst-dependencies.jar!/wlstScriptDir/reports_server_handler.py", line 152, in reportsServer_createReportsServerInstance
File "", line 164, in cd
File "", line 553, in raiseWLSTExceptionWLSTException: Error occurred while performing cd : Attribute oracle.reports:Type=ReportsServerComponent,Name=ReportsServerComponentManager not found. Use ls('a') to view the attributes wls:/base_domain/editCustom/oracle.reports>

STEPS
The issue can be reproduced at will with the following steps:

Changes

New Reports/Forms 12c Installation.

Cause

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