High "direct path sync" Waits on Unix Due to Oracle Not Using Direct I/O to Interact with the Filesystem
(Doc ID 1492706.1)
Last updated on OCTOBER 30, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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.
- AWR reports "direct path sync" wait events in the Top 5 Wait events
- ASH report indicates the object where it is occurring is a table, for example:
- Describe of table mytab reveals that the table includes a lob column
- Initialization parameter filesystemio_options is not set or set to none.
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document