We had grid control 10g fully intergrated years ago and it is fully in use, all databases are on target list and added.
now somehow half year ago, management hired a consulting company to implemented 12c cloud control on another primary/standby environment.
Before I push the agent over and discover the target, I have several questions I have to ask, hopefully guru here can help me.
1). do I have to disable 10g grid control and remove those agents on each database hosts?
2). Right now the primary 12c cloud control is down, but standby connection is up and running. Website can be open on standby site. How do I open the primary up? where/which logs I can check? Anyone has docs for it?
3). Any good docs/comments are highly appreciated.
thanks in advance.
I am not guru but Ic an try to help
Answer 1) You do not have to disable 10g grid. You can run both 10g and 12c parallel. But both agents needs to listen to different ports. They cannot listen on same ports. Your deployment will have if you give same 10g port for 12c agent.
Answer 2 , 3) Read this doc in metalink, this might help
How to Configure the OMS Connect String when Repository is in a Dataguard setup (Doc ID 1328768.1)
Regarding your query on how to switchover your primary OMS from standby you can refer to
Performing Switchover and Failover Operations
The procedure for creating a standby OMS differs according to the version of Enterprise Manager.
220.127.116.11 and earlier - Standby OMSs using Standby WebLogic Domain.
18.104.22.168 and later - Standby OMSs using Storage Replication.
For information on EMCC log location go through
EM 12c Cloud Control: Steps to Locate and Manage the Various Logs/Trace files in a 12c OMS Installation (Doc ID 1448308.1)
Thanks. I found the host name and logged in. and somehow it is surprising to find out that there is no instance on the box.
Is this normal behavior?
ps -ef|grep pmon shows nothing, /etc/oratab shows nothing.
under /u01, I only see oms home and agent home, no dbhome.
I am just puzzled here. since I am new to this environment. I would like gurus here help me
If you're using additional OMS then that machine contain only OMS+Agent where in you have repository database resides on either different host or in primary OMS machine. For Example, in your primary OMS machine would have OMS+Agent+DB
If you have Standby OMS then probably you will have Standby repository database configured with DG (Data Guard).