I would say no, you cannot drop these disks as there may be extents moved to them that you would lose by dropping them. Other opinions may be forthcoming. David Fitzjarrell ________________________________ From: "Christopher.Taylor2@xxxxxxxxxxxx" <Christopher.Taylor2@xxxxxxxxxxxx> To: oracle-l@xxxxxxxxxxxxx; Mark.Bobak@xxxxxxxxxxxx; Dave.Herring@xxxxxxxxxx Sent: Wednesday, April 24, 2013 1:14 PM Subject: Slightly Urgent ASM Question - Cancel Rebalance operation We're in the process of migrating existing ASM Disk Groups to a new storage configuration (new disks (metavolumes), same array). We've done this in DEV/QA and everything went fine. Now, in Prod, I started the ARCHIVELOG diskgroup migration and discovered that the disks I was given aren't enough for the space I'm currently using. So, the first thing I did was set the REBALANCE POWER for the operation to 0. Now v$asm_operation shows no rows. My Diskgroup in question now shows the below - what I need to know is: Can I now REMOVE the disks I started to add which are RAW112 through RAW117 until I get the right number of disks from storage, or am I in a weird/bad situation? Thanks!! DG_DATABASE_NAME_ARCHIVE_01 /dev/raw/raw112 DG_DATABASE_NAME_ARCHIVE_01_0001 69,044 2,326 3.37 /dev/raw/raw113 DG_DATABASE_NAME_ARCHIVE_01_0002 69,044 2,324 3.37 /dev/raw/raw114 DG_DATABASE_NAME_ARCHIVE_01_0003 69,044 2,326 3.37 /dev/raw/raw115 DG_DATABASE_NAME_ARCHIVE_01_0004 69,044 2,325 3.37 /dev/raw/raw116 DG_DATABASE_NAME_ARCHIVE_01_0005 69,044 2,326 3.37 /dev/raw/raw117 DG_DATABASE_NAME_ARCHIVE_01_0006 69,044 2,327 3.37 /dev/raw/raw70 DG_DATABASE_NAME_ARCHIVE_01_0050 138,097 71,422 51.72 /dev/raw/raw71 DG_DATABASE_NAME_ARCHIVE_01_0051 138,097 71,422 51.72 /dev/raw/raw72 DG_DATABASE_NAME_ARCHIVE_01_0052 138,097 71,412 51.71 /dev/raw/raw73 DG_DATABASE_NAME_ARCHIVE_01_0053 138,097 71,412 51.71 /dev/raw/raw79 DG_DATABASE_NAME_ARCHIVE_01_0054 138,097 71,832 52.02 /dev/raw/raw83 DG_DATABASE_NAME_ARCHIVE_01_0055 69,044 35,717 51.73 /dev/raw/raw84 DG_DATABASE_NAME_ARCHIVE_01_0056 69,044 35,733 51.75 /dev/raw/raw97 DG_DATABASE_NAME_ARCHIVE_01_0057 69,044 35,734 51.76 Chris Taylor Oracle DBA Parallon IT&S -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l