2.11.8.1 Configuring Eighth Rack On X3-2 or Later Machines Running Oracle Exadata Storage Server Release 12.1.2.3.0 or Later

The following procedure should be performed after Oracle Linux database server in Oracle Exadata Database Machine Eighth Rack has been re-imaged, restored, or rescued.

For X3-2 systems, use this method only if you are running Oracle Exadata System Software release 12.1.2.3.0 or later.

1. On the recovered server, check that the resourcecontrol utility exists in the /opt/oracle.SupportTools directory. If not, copy it from another database server to the recovered server.
2. Ensure proper permissions are set on the resourcecontrol utility.

   # chmod 740 /opt/oracle.SupportTools/resourcecontrol
   

3. Verify the current configuration.

   # dbmcli -e LIST DBSERVER ATTRIBUTES coreCount
   

   See Table 2-3 for the number of cores allowed for each machine configuration. If the correct value is shown, then no configuration changes are necessary. If that value is not shown, then continue to step 4 of this procedure.

4. Change the enabled core configuration.

   # dbmcli -e ALTER DBSERVER pendingCoreCount=new_core_count FORCE
   

   new_core_count for an Eighth Rack is:

   • X8-2: 24
   • X7-2: 24
   • X6-2: 22
   • X5-2: 18
   • X4-8: 60
   • X4-2: 12
5. Restart the server.

   # reboot
   

6. Verify the changes to the configuration.

   # dbmcli -e LIST DBSERVER ATTRIBUTES coreCount