Hi, We ran out of space in one of the ASM volume groups and we added space to it: State Type Rebal Unbal Sector Block AU Total_MB Free_MB Req_mir_free_MB Usable_file_MB Offline_disks Name MOUNTED EXTERN N N 1024 4096 1048576 182240 20036 0 20036 0 DATA/ However, this extra space is not being recognized. I want to know if rebalance operation is going on. When I query the v$asm_operation view I do not get any response: 1* select * from v$asm_operation SYS@+ASM> / no rows selected SYS@+ASM> How can I tell if rebalance operation is going on. Here is last few lines from ASM init.ora: WARNING: allocation failure on disk DATA_0002 for file 4 xnum 0 Tue Mar 24 13:50:46 2009 Errors in file /xxx/oracle10/app/admin/+ASM/bdump/+asm_arb1_25860.trc: ORA-15041: diskgroup space exhausted Tue Mar 24 13:50:46 2009 NOTE: stopping process ARB1 NOTE: stopping process ARB6 NOTE: stopping process ARB5 NOTE: stopping process ARB2 Tue Mar 24 13:50:46 2009 WARNING: allocation failure on disk DATA_0006 for file 3 xnum 20 Tue Mar 24 13:50:46 2009 WARNING: allocation failure on disk DATA_0006 for file 6 xnum 0 Tue Mar 24 13:50:46 2009 Errors in file /xxx/oracle10/app/admin/+ASM/bdump/+asm_arb0_25858.trc: ORA-15041: diskgroup space exhausted Tue Mar 24 13:50:46 2009 NOTE: stopping process ARB0 Tue Mar 24 13:50:46 2009 Errors in file /xxx/oracle10/app/admin/+ASM/bdump/+asm_arb3_25864.trc: ORA-15041: diskgroup space exhausted NOTE: stopping process ARB3 NOTE: stopping process ARB4 Tue Mar 24 13:50:49 2009 WARNING: rebalance not completed for group 1/0xa1129969 (DATA) Tue Mar 24 13:50:49 2009 SUCCESS: rebalance completed for group 1/0xa1129969 (DATA) NOTE: PST update: grp = 1 NOTE: PST update: grp = 1 Tue Mar 24 14:02:50 2009 WARNING: allocation failure on disk DATA_0002 for file 374 xnum 1 ver 10.2 Thanks, Ram.