Why Does Oracle Create So Many Open File Descriptors in /dev/shm on Linux When memory_target is Set ? (Doc ID 1321306.1)

Last updated on FEBRUARY 24, 2022

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 and later
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
Oracle Database Cloud Exadata Service - Version N/A and later
Linux x86
Linux x86-64

Goal

Oracle is creating hundreds of thousands open file descriptors in /dev/shm (open files)

1. Why is Oracle keeping hundreds of thousands Open File descriptors in /dev/shm while there are just hundreds of files ?

2. Is this a known issue? ( any notes/documents/bug reports/fixes exist).

3. Or is this expected behavior of oracle?

Solution

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In this Document

Goal

Solution

References

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Why Does Oracle Create So Many Open File Descriptors in /dev/shm on Linux When memory_target is Set ? (Doc ID 1321306.1)

Applies to:

Goal

Solution

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!