Disks of Dismounted Diskgroup Are Still Hold / Lock By Oracle Process on

(Doc ID 1485163.1)

Last updated on JANUARY 31, 2018

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.1 to 11.2]
Information in this document applies to any platform.


You are on or have the fix for the same issue on as described in MOS Doc ID 1306574.1

Still, you are seeing that the disks of the dismounted diskgroup are held by processes.

This is not allowing you to copy the VGs of the dismounted diskgroup


In the ASM alert.log you might see the followings

ORA-27061: waiting for async I/Os failed
Linux-x86_64 Error: 5: Input/output error
Additional information: -1
Additional information: 4096
WARNING: Read Failed. group:0 disk:5 AU:0 offset:0 size:4096

and in the OS logs

May 16 12:59:12 myoda1 kernel: Buffer I/O error on device dm-35, logical block 8



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