Slow IO Performance: WARNING:io_submit failed due to kernel limitations MAXAIO for process=128
(Doc ID 2175723.1)
Last updated on JULY 11, 2023
Applies to:
Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]Oracle Database - Standard Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
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
Information in this document applies to any platform.
Symptoms
Slow IO performance with the following warning messages:
WARNING:io_submit failed due to kernel limitations MAXAIO for process=128 pending aio=128
WARNING:asynch I/O kernel limits is set at AIO-MAX-NR=1048576 AIO-NR=180814
WARNING:asynch I/O kernel limits is set at AIO-MAX-NR=1048576 AIO-NR=180814
Changes
Cause
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In this Document
Symptoms |
Changes |
Cause |
Solution |
References |