High "direct path sync" Waits on Unix Due to Oracle Not Using Direct I/O to Interact with the Filesystem
Last updated on SEPTEMBER 28, 2017
Applies to:Oracle Database - Enterprise Edition - Version 188.8.131.52 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.
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