Power Off Sequence for Exadata Stack

Poweroff Database Servers

For single server power off /Restart

1. First stop the oracle cluster with below command

#$GRID_HOME/grid/bin/crsctl stop cluster

2. If it fails to stop the cluster then use -f option to stop it forcefully.
Shutdown the server with below command

#shutdown -h -y now

To restart the server execute below command

#shutdown -r -y now      or      #reboot

3. Remove power cable from the server

For multiple servers poweroff/restart with dcli utility

1. First stop the oracle cluster with below command

#$GRID_HOME/grid/bin/crsctl stop cluster -all

2. Shutdown all the servers with dcli utility

#dcli -g dbs_group -l root shutdown -h -y now

---dbs_group is the file which contains the list of all the exadata servers.

To restart the server execute below command

#dcli -g dbs_group -l root shutdown -r -y now    or  #dcli -g dbs_group -l root reboot

----dbs_group is the file which contains the list of all the exadata servers.

3. Remove power cables from the servers

Poweroff Storage Servers

Reat the same procedure of server to power off the exadata storage servers except to stopping the crsctl.

Note: We have to use cell_group file instead of dbs_group file to shutdown the storage servers.

Poweroff Network Equipments

We can directly remove power cables from the network switches as network equipments don't have power switches.

Exadata Storage Server Shutdown/Startup procedure

Shutdown Procedure

1. Execute below command to check if there is any offline disk    

cellcli > list griddisk attributes name where asmdeactivationoutcome != ‘ yes’

if it write anything then it's not safe to offline the storage server as disk redundancy will not maintained properly.

2. Inactivate all the griddisk with below command if step one positively executed with no output

Cellcli > alter griddisk all inactive

3. Verify whether all disks are inactive or not with below command

Cellcli > list griddisk where status =! ‘inactive’

If all disk grid disks are inactive then we can proceed to shutdown the storage server.

Startup Procedure

1. Start the cell. All cell services will come up automatically.

2. Bring all disk online

Cellcli > alter griddisk all active

3. Verify whether disks successfully came online or not

Cellcli > list griddisk attributes name, asmmodestatus

All disks should come online. If any of the disk is not online then wait sometimes to change the disk status.


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