1. High Availability Options for Enterprise Manager 12c
UKOUG App Server & Middleware SIG
9 October 2014

2. Agenda
Architecture
HA Approaches
Licensing
Demo

3. Architecture
Tiers
◦Combined web tier and application (OMS)
◦Database
◦Agents with plug-ins on nodes to be managed

4. OHS
WebLogic
Database
Agent
Managed
targets
OMS (monolithic unit)
EM console
or CLI
Software Library
Other components, like BIP or
RUEI, not shown

5. OHS
WebLogic
Database (RAC, RON, EE)
Agent
OHS
WebLogic
Load Balancer
HA: single site
Software
Library
Storage replication/sync
for multi-site software libraries

6. DR with local HA
(from Oracle doc)

7. HA Options / Official ‘Levels’
I’m not too keen on these definitions!

8. HA Options in Practice
Do you really need RAC for EM repository?
Data Guard recommended
VMware user?
◦Consider a nice ‘all in one’ EM VM – up to mid-size
◦It just works…
◦vMotion, DRS & SRM has implications for licensing

9. Licensing
EM is primarily paid for via Packs on target nodes
◦E.g. EM WebLogic Pack, EM SOA Pack
Anything other than single instance EM repo database needs extra licences:
◦RAC (EE included, all nodes need RAC option though)
◦Data Guard (EE needed for standby, optionally RAC too)
◦OMS (i.e. OHS & WLS) doesn’t need a licence as long as only used for EM

10. References
Oracle® Enterprise Manager Cloud Control Advanced Installation and Configuration Guide 12c Release 4 (12.1.0.4) E24089-34
e.g. 16 High Availability Solutions
Oracle® Enterprise Manager Licensing Information
12c Release 4 (12.1.0.4)
E24474-32
e.g. 1.5 Enterprise Manager Restricted-use License

11. Demo
Simulating OMS node or network failure
Demo environment:
◦BIG-IP load balancer
◦2 OMS nodes
◦Single instance database

12. High Availability Options for Enterprise Manager 12c
UKOUG App Server & Middleware SIG
9 October 2014