ORA-15260: permission denied on ASM disk group

[grid@stage ~]$ sqlplus / as sysdba

SQL> ALTER DISKGROUP DATA ADD DISK 'ORCL:DATA_0001';

ALTER DISKGROUP DATA ADD DISK 'ORCL:DATA_0001'

*

ERROR at line 1:

ORA-15032: not all alterations performed

ORA-15260: permission denied on ASM disk group

Solution:

To perform this activities you need to connect to ASM instance as sysasm

[grid@stag ~]$ sqlplus / as sysasm

SQL> ALTER DISKGROUP DATA ADD DISK 'ORCL:DATA_0001';

Diskgroup altered.