IBM Power Systems 775 Manual page 302

iv. Stop named:
v. Stop the xcat db:
4. If the stop is unsuccessful, use the following force:
$ su - xcatdb
$ db2stop force
$ exit
5. Unmount the shared file systems.
Your site directory names might vary from the following sample:
$ umount ? /etc/xcat
$ umount ? /install
$ umount ? ~/.xcat
$ umount ? /databaseloc
6. Shut down the primary EMS:
$ shutdown -h now
After the primary is shut down, the backup is shut down.
7. Log in to the backup EMS and issue the following command:
$ shutdown -h now
Turning off the external disks that are attached to the EMS
After the primary and backup EMS are shutdown, you turn off the external disk drives.
Optional: Turning off breakers or disconnecting power
Now that all of the cluster-related hardware is turned off and the EMS and HMCs are down,
the power for the management rack and the 775 frames are turned off. If you have breaker
switches, these switches might be used. If not you do not have breaker switches, the power is
disconnected from the management rack and the frames by disconnecting the power cords
on the IBM Power System 775 management rack.
Handle with care: Care must be taken when power to the hardware is handled.
All software and hardware for the cluster is now stopped and the process is complete.
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IBM Power Systems 775 for AIX and Linux HPC Solution
$ <need stopsrc>
$ su - xcatdb
$ db2stop
$ exit