Remove diskgroup raw disk?

Hi all.

I installed of ASM (10.2.0.3) with attached databases.

For the DATA diskgroup, I have 16 9 GB of raw disk files. There are more than 60 GB of free disk. I would like to give back it to the AIX admin guy. ASM used about 6G 9 g on each disc. How to make it so that there is nothing on the disk I want to remove from the diskgroup or I can just remove that via OEM and reorganize it?

TIA,
Greg

If they are part of a disk group, you will have several disks

Find the disk you group and save the number of disk group

SQL > select group_number, name from v$ asm_diskgroup;

GROUP_NUMBER NAME
------------ ------------------------------
1 P1CSM2_ASM_DG1

SQL >

For the disk group is the disk that you want to remove the group.

SQL > select v$ asm_disk, disk_number, mode_status, name, path where group_number = 1 order by disk_number, name;

DISK_NUMBER MODE_ST NAME
----------- ------- ------------------------------
PATH
-----------------------------------------------------------
0 P1CSM2_ASM_DG1_0000 ONLINE
/ dev/rhdisk2

1 P1CSM2_ASM_DG1_0001 ONLINE
/ dev/rhdisk3

2 P1CSM2_ASM_DG1_0002 ONLINE
/ dev/rhdisk4

3 P1CSM2_ASM_DG1_0010 ONLINE
/ dev/rrawlv01

4 P1CSM2_ASM_DG1_0011 ONLINE
/ dev/rrawlv02

5 P1CSM2_ASM_DG1_0012 ONLINE
/ dev/rrawlv03

6 selected lines.

SQL >

determine the disk that you want to remove

SQL > ALTER DISKGROUP P1CSM2_ASM_DG1 DROP DISK P1CSM2_ASM_DG1_0000;

Modified DiskGroup.

Check operation of the DSO that will remove anything from this disc.

SQL > select * from v$ asm_operation;

GROUP_NUMBER OPERA STAT REAL SOFAR EST_WORK EST_RATE POWER
------------ ----- ---- ---------- ---------- ---------- ---------- ----------
EST_MINUTES
-----------
1. RUN 1 1 548 2884 1588 REBAL
1

Once the operation is complete, then the raw device can be recovered

SQL > select * from v$ asm_operation;

no selected line

Published by: mrmessin on May 27, 2009 12:23

Tags: Database

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