EM 12c: Unable to Discover Multiple Cluster and Cluster Databases with Exactly same name in the Console UI

(Doc ID 2305446.1)

Last updated on OCTOBER 12, 2017

Applies to:

Enterprise Manager for Oracle Database - Version 12.1.0.7.0 and later
Information in this document applies to any platform.

Symptoms

Setup details:

1. There are two different cluster and RAC DB setups with exactly same names on two different set of hosts, for example:

cluster name - ORA-cluster
db_name and service name - ORCL
SID - orcl1 and orcl2
Nodes - netdb1, netdb2

cluster name - ORA-cluster
db_name and service name - ORCL
SID - orcl1 and orcl2
Nodes - vipdb1, vipdb2

2. The cluster and HAS targets were discovered successfully by using the Guided discovery method and providing different names for the target names. Steps followed from:
<Note 1908635.1> : EM 12c, EM 13c: How to Discover the Cluster and Cluster Database (RAC) Target in Enterprise Manager 12c and 13c
Section - Discover the Cluster Target and the Cluster Database Target via guided processes

   When saving the targets, the cluster targets were named as:

ORCL-net-cluster
ORCL-vip-cluster

3. After this, cluster DB targets are being manually added using the guided discovery method itself.
The first set of cluster DB target and its instances were successfully added from Nodes - netdb1, netdb2 using Cluster DB name - ORCL_net

However, attempting to discover the cluster DB from Nodes - vipdb1, vipdb2 using the guided discovery method reports error:

Following target(s) already exists in repository based on properties:- MCIS_vip:rac_database

 

Cause

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