After Removal, No Cluster or Cluster Database targets can be Discovered on the Same Cluster (Doc ID 1404900.1)

Last updated on SEPTEMBER 19, 2012

Applies to:

Enterprise Manager for Oracle Database - Version: 11.1.0.1 and later   [Release: 11.1 and later ]
Information in this document applies to any platform.

Symptoms

After removing a cluster or cluster database target from Grid Control, the target cannot be added back. Manually adding the cluster using EM UI will fail with:

No cluster is detected on the host

Also, the targets may already exist at the agent level, but not visible in EM console. Verification can be done with:

[grid@node1 ~]$ /u01/oracle/product/agents/agent11g/bin/emctl config agent listtargets
Oracle Enterprise Manager 11g Release 1 Grid Control 11.1.0.1.0
Copyright (c) 1996, 2010 Oracle Corporation. All rights reserved.
[node1.abc.com:1830, oracle_emd]
[rac-cluster, cluster]
[node1.abc.com, host]
[LISTENER_node1.abc.com, oracle_listener]
[ORCL_ORCL1, oracle_database]
[ORCL, rac_database]
[+ASM1_node1.abc.com, osm_instance]
[LISTENER_SCAN1_rac-cluster, oracle_listener]


Cause

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