Hi, Anyone have an idea how to drop a dismount ASM disk group? I can't mount it and also can't drop it? SQL> select group_number, name, STATE from v$asm_diskgroup; GROUP_NUMBER NAME STATE ------------ ------------------------------ ----------- 1 SUN6130ORACLE1 MOUNTED 2 SUN6130ORACLE2 MOUNTED 0 ORACLEGROUP1 DISMOUNTED 0 FAS980DG1 DISMOUNTED 0 ORACLEGROUP2 DISMOUNTED SQL> drop diskgroup ORACLEGROUP1; drop diskgroup ORACLEGROUP1 * ERROR at line 1: ORA-15039: diskgroup not dropped ORA-15001: diskgroup "ORACLEGROUP1" does not exist or is not mounted SQL> alter diskgroup ORACLEGROUP1 mount; alter diskgroup ORACLEGROUP1 mount * ERROR at line 1: ORA-15032: not all alterations performed ORA-15024: discovered duplicately numbered ASM disk 0 Best Regards, Sarah Chen Information Technologies Budco - The Dialogue Company -- //www.freelists.org/webpage/oracle-l