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ORA-15477: cannot communicate with the volume driver (Doc ID 1632685.1)

Last updated on JUNE 25, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.3 and later
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
Information in this document applies to any platform.

Symptoms

On : 11.2.0.3 version, STORAGE

Acfs is Supported,Installed and Loaded,yet you get "ORA-15477: cannot communicate with the volume driver"


Changes

Due to some external factors directory structure for acfs is missing for eg : /dev/asm/

ls -latr /dev/asm/
ls: /dev/asm/: No such file or directory

Or

Due to security you will be having default object creation umask is 077, For Oracle user it is forced to value 022 but ROOT.SH does things under root user which automatically mean that objects (libraries/drivers/etc) are with incorrect privileges therefor not usable by any other user other than "root" itself.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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