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Exadata: GridDisk Cannot be added to Diskgroup Due to "ORA-15020: discovered duplicate ASM disk" Error (Doc ID 2293693.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Exadata Storage Server Software - Version to [Release 11.2 to 12.1]
Oracle Database - Enterprise Edition - Version to [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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