6.9 Performing Additional Checks and Configuration

Perform these additional checks and steps to verify the configuration of your Oracle Exadata Rack.

1. (Oracle Exadata only) Log in to the first database server as the root user.

2. Change to the firstconf directory using the following command:

   # cd /opt/oracle.SupportTools/firstconf

3. Create a group file with the list of IP addresses to use in the dcli utility commands, if you want to query multiple racks.

4. Verify the rack master serial number is set correctly using the following command:

   # dcli -l root -g group_file_name "ipmitool sunoem cli 'show   \
   /SP system_identifier'" | grep "system_identifier =" > /tmp/show-rack-msn.out
   
   # more /tmp/show-rack-msn.out

   If none of the serial numbers are set, then contact Oracle Support Services. If one serial number is not set correctly, then run the following command to correct it, where rack_type is the rack designation, such as X8-8 and the string serial_number represents the serial number:

   # ipmitool sunoem cli 'set /SP system_identifier= \
   "Exadata Database Machine rack_type serial_number"'
   

5. If you are running an Oracle Exadata System Software release earlier than 18.1, then ensure disk cache policy is set to Disabled using the following command as the root user on the first database server in the cluster:

   # dcli -g /opt/oracle.SupportTools/onecommand/all_group -l root \
   /opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -aALL | grep -i 'Disk Cache Policy'

   The following is an example of the output from the command:

   dm01db01: Disk Cache Policy   : Disabled
   dm01db02: Disk Cache Policy   : Disabled
   dm01db03: Disk Cache Policy   : Disabled
   ...
   dm01cel01: Disk Cache Policy   : Disabled
   dm01cel02: Disk Cache Policy   : Disabled
   ...

   If any server shows different output, then identify the LUN and use the following command to reset the policy to Disabled, where LUNn is the LUN number, such as L2:

   # MegaCli64 -LDSetProp -DisDskCache -LUNn -a0