Exadata: Intermittent IO cancellation errors when the daily cron job runs in the cells
(Doc ID 2444290.1)
Last updated on FEBRUARY 27, 2019
Applies to:Oracle Exadata Storage Server Software - Version 22.214.171.124.0 to 126.96.36.199.0 [Release 12.1 to 12.2]
Information in this document applies to any platform.
Following critierias must be met to hit this issue.
- Intermittent Exadata IO cancellation kicking in for the system disks on various cells.
For more details about 'Exadata I/O Latency Capping', please refer to Doc ID 1925661.1
- The issue always happens at "03:06 am", when the daily cron job runs at the cells.
- Exadata X4 or lower Hardware, which uses Niwot disk controller.
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