Shut Down Or Reboot An Exadata Storage Server - Oracle SuperCluster T5-8 Owner's Manual

Shut Down or Reboot an Exadata Storage Server

Charger System State: 1
Charger System Ctrl: 0
Charging current: 541 mA
Absolute State of Charge: 0%
Max Error: 0 %
Exit Code: 0x00
Shut Down or Reboot an Exadata Storage Server
When performing maintenance on Exadata Storage Servers, it may be necessary to power down
or reboot the cell. If Exadata Storage Server is to be shut down when one or more databases
are running, then verify that taking Exadata Storage Server offline will not impact Oracle ASM
disk group and database availability. The ability to take Exadata Storage Server offline without
affecting database availability depends on the level of Oracle ASM redundancy used on the
affected disk groups, and the current status of disks in other Exadata Storage Servers that have
mirror copies of data as Exadata Storage Server to be taken offline.
Use the following procedure to power down Exadata Storage Server.
1. Run the following command to check if there are other offline disks:
CellCLI> LIST GRIDDISK ATTRIBUTES name WHERE asmdeactivationoutcome != 'Yes'
If any grid disks are returned, then it is not safe to take Exadata Storage Server offline because
proper Oracle ASM disk group redundancy will not be maintained. Taking Exadata Storage
Server offline when one or more grid disks are in this state will cause Oracle ASM to dismount
the affected disk group, causing the databases to shut down abruptly.
Inactivate all the grid disks when Exadata Storage Server is safe to take offline:
2.
CellCLI> ALTER GRIDDISK ALL INACTIVE
The preceding command completes once all disks are inactive and offline.
3.
Verify that all grid disks are INACTIVE to allow safe shut down of Exadata Storage
Server.
CellCLI> LIST GRIDDISK WHERE STATUS != 'inactive'
If all grid disks are INACTIVE, then Exadata Storage Server can be shut down without affecting
database availability.
156 Oracle SuperCluster T5-8 Owner's Guide • May 2016