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ASM disk name having Invalid (non ASCII) / Junk characters. (Doc ID 2471487.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 to 18.3.0.0.0 [Release 12.2 to 18]
Information in this document applies to any platform.

Symptoms

The output of v$asm_disk shows:

select STATE,MOUNT_STATUS,HEADER_STATUS,NAME,PATH from v$asm_disk;

STATE MOUNT_S HEADER_STATU NAME PATH
-------- ------- ------------ --------------- ----------------------
NORMAL CACHED MEMBER DATA2_0003 /dev/ASM0215
NORMAL CACHED MEMBER ▒▒n▒▒▒▒▒ /dev/ASM0212               => Invalid disk name
NORMAL CACHED MEMBER DATA3_0002 /dev/ASM0217
NORMAL CACHED MEMBER ▒dl▒9▒ /dev/ASM020a                     => Invalid disk name

 The kfed read of the issue disk shows that BOTH provstr and the dskname have invalid characters:

oracle@prod01> kfed read /dev/ASM020a
kfbh.type: 1 ; 0x002: KFBTYP_DISKHEAD
kfdhdb.driver.provstr: ORCLDISK▒dl▒9▒ ; 0x000: length=16         =>   provstr has invalid characters                  
kfdhdb.driver.reserved[0]: 2968284843 ; 0x008: 0xb0ec6eab
kfdhdb.driver.reserved[1]: 2948915436 ; 0x00c: 0xafc4e0ec
kfdhdb.driver.reserved[2]: 0 ; 0x010: 0x00000000
kfdhdb.dskname: ▒dl▒9▒ ; 0x028: length=8                                =>   dskname has invalid characters
kfdhdb.grpname: FRA2 ; 0x048: length=4   

 

 

Changes

 

Cause

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