Kernel Warning "Unaligned AIO/DIO on inode <inode_number> by oracle; performance will be poor." (Doc ID 1613358.1)

Last updated on MARCH 08, 2017

Applies to:

Linux OS - Version Oracle Linux 4.4 and later
Linux x86
Linux x86-64

Symptoms

The filesystem used for redo logs by Oracle Database is migrated from ext3 to ext4 and the following message is received:

Nov 24 19:11:56 server1 kernel: EXT4-fs (dm-14): Unaligned AIO/DIO on inode 39366985 by oracle; performance will be poor.

 

Cause

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