1. RAC Networking Lab

2. 1. Edit your tnsnames.ora file
In notepad or wordpad, open the file C:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\tnsnames.ora
For the Service name you created at install time, review the settings for TAF.
Add the “(ENABLE = BROKEN)” line below the Description line
Edit on both cluster nodes
Test your ability to login to the database with sqlplus (on the server) using your service name, i.e.
sqlplus
sqlplus
Sqlplus

3. 2. Test TAF Failover Open two Command Prompt windows
In the first window, log into sqlplus with the service name, i.e
Sqlplus
Run the following query:
Select instance_name from v$instance;
In the other window, shut down the instance shown in the query result
Srvctl stop instance –d MSnDB –i MSnDB1
Repeat the query in the sqlplus session
The instance should have changed

4. 2. Test TAF Failover Optional - Restart all instances
Repeat the exercise, but this time reboot the node of the instance in the query
TCP/IP registry parameters may have to be edited for optimal failover time.

5. 3. Client Networking Locate your client (desktop) tnsnames.ora file
Copy in the contents of your server side tnsnames.ora file
Omit the local and remote listener lines
Test connectivity to your database
Test TAF failover from the client
Edit the client tnsnames.ora file to add access to a different class database
Test connectivity to the alternate database

6. 4. Networking Monitoring Demo
Your instructor will demonstrate using ttcp to test network throughput for the private interconnect

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This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.