Last updated on OCTOBER 31, 2016
Applies to:Oracle Database - Enterprise Edition - Version 10.1.0.2 to 184.108.40.206 [Release 10.1 to 11.2]
Information in this document applies to any platform.
1. The following error occurs when creating a diskgroup in a single ASM instance environment.
SQL> CREATE DISKGROUP DATA EXTERNAL REDUNDANCY DISK '/dev/rdsk/c25t7d6';
CREATE DISKGROUP DATA
ERROR at line 1:
ORA-15018: diskgroup cannot be created
ORA-15030: diskgroup name "DATA" is in use by another diskgroup
2. DATA diskgroup has never been created before and all permission for ASM devices show the correct owner and group information.
The device in question can be read/written in OS level without any issue.
$dd if=/dev/zero of=/dev/rdsk/c25t7d6 bs=1048576 count=10
10+0 records out
10485760 bytes (10 MB) copied, 0.967994 seconds, 10.8 MB/s
3. Diskgroup can be created with asm_diskstring='/dev/rdsk/c12t7d6' parameter - i.e just one device path for the diskgroup.
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