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Cleanly Remove OMS in 2-OMS configuration in Preparation for 12c Upgrade

edited Oct 4, 2012 11:19PM in Enterprise Manager Generic (MOSC) 1 commentAnswered
We are in the process of upgrading EM 10g to 12c, using the 2-System upgrade. 

In our current 10g configuration, we have 2 OMSes each on a separate server.  Connections are made via an F5 load balancer.  To prepare one of those servers for 12c, I need to remove it from the current configuration.  How do I cleanly remove the 2nd OMS from the 10g repository? 

The query on select * from sysman.mgmt_failover_table currently returns 2 rows, one for each OMS/server.  After I cleanly remove the 2nd OMS, this query should return 1 row. 

Also, what role does the EM key play in this change?  Do I need to back it up first? 

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