Exadata: GridDisk Cannot be added to Diskgroup Due to "ORA-15020: discovered duplicate ASM disk" Error
Last updated on AUGUST 03, 2017
Applies to:Oracle Exadata Storage Server Software - Version 220.127.116.11.0 to 18.104.22.168.3 [Release 11.2 to 12.1]
Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 11.2 to 12.2]
Information in this document applies to any platform.
1) Griddisks cannot be added back to diskgroups after replacing associated physical disk in cell server.
2) The 3 griddisks associated to the replaced physical disks show asmmodestatus = ONLINE:
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