2.3.2.2 Dropping an Oracle Exadata Storage Server Grid Disk

To drop an Oracle Exadata Storage Server grid disk, use the CellCLI DROP GRIDDISK command.

Make the grid disk inactive before dropping the grid disk to ensure that the grid disk is not in use. The FORCE option can be used to force the grid disk that is in use to be dropped.

Caution:

• Before dropping a grid disk that belongs to an Oracle ASM disk group, ensure that the corresponding Oracle ASM disk was dropped from the disk group.

• Before dropping a grid disk using the FORCE option, ensure that the Oracle ASM disk was dropped from the disk group. If you drop a grid disk that is still part of an ASM disk group, you may compromise data redundancy in the disk group or cause the disk group to dismount.

1. Drop the Oracle ASM disk from the disk group.

   SQL> ALTER DISKGROUP disk_group_name DROP DISK disk_name;
   

2. Make the corresponding grid disk inactive.

   CellCLI> ALTER GRIDDISK disk_name INACTIVE
   

3. Drop the grid disk.

   CellCLI> DROP GRIDDISK disk_name
   

Example 2-3 Dropping a specific grid disk

After you have dropped the Oracle ASM disk from the disk group, you can drop the related grid disk.

CellCLI> ALTER GRIDDISK data0_CD_03_cell04 INACTIVE
CellCLI> DROP GRIDDISK data0_CD_03_cell04

Example 2-4 Dropping all grid disks

After you have dropped the Oracle ASM disks from the disk group, you can drop multiple grid disks using a single command.

CellCLI> ALTER GRIDDISK ALL INACTIVE
CellCLI> DROP GRIDDISK ALL PREFIX=data0

Example 2-5 Using the FORCE option when dropping a grid disk

The FORCE option forces an active grid disk to be dropped. For example, if you cannot make a grid disk INACTIVE, but must drop the grid disk, you can use the FORCE option.

Use the FORCE option cautiously. If you drop a grid disk that is still part of an ASM disk group, you may compromise data redundancy in the disk group or cause the disk group to dismount.

CellCLI> DROP GRIDDISK data02_CD_04_cell01 FORCE