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Top Issues : When Using ASM Filter Driver (ASMFD) (Doc ID 2247597.1)

Last updated on JANUARY 24, 2020

Applies to:

Oracle Database - Enterprise Edition
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Generic Linux
Generic UNIX


 The purpose of this note is to provide a summary of the top issues encountered when using ASMFD.


 This document is intended for Oracle Clusterware/RAC Database Administrators and Oracle support engineers.


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In this Document
 Issue #1: After upgrade to ASMFD from ASMLib the device path has been changed from /dev/mapper/* to /dev/sd*
 Issue #2: ASMFD Configuration Error - ASMCMD-9519: ASMLib is present with ASM disk string 'ORCL:*'
 Issue #3 : AFD devices are not visible after Reboot
 Issue #4 :Cannot resize ASM Disk using ASM Filter Driver(AFD) online
 Issue #5 : ASMCMD-9526: The AFD state is 'LOADED' and filtering is 'DEFAULT'

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