My Oracle Support Banner

'Heavy swapping observed on system' and TNS-12537 / ns secondary err code: 12560 (Doc ID 2989475.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.14.0.0.0 and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

NOTE: In the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.
Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.


Following is reported in RAC instance alert log:

Application is mainly working on this current RAC instance.

Impacts
-----------------------
1) Application connections failed

2) After a long time status of listener resource in GI may become 'UNKNOWN'.


Cause

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
Symptoms
Cause
Solution


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.