My Oracle Support Banner

Troubleshooting Guide for TNS-12535 or ORA-12535 or ORA-12170 Errors (Doc ID 119706.1)

Last updated on MARCH 08, 2023

Applies to:

Oracle Net Services - Version 8.1.7.4 and later
Advanced Networking Option - Version 11.2.0.1 to 11.2.0.1 [Release 11.2]
Oracle Database - Enterprise Edition - Version 9.2.0.8 and later
Oracle Database - Standard Edition - Version 19.3.0.0.0 to 19.3.0.0.0 [Release 19]
Information in this document applies to any platform.

Purpose

This bulletin is designed to assist in determining what steps to take to troubleshoot and correct ORA-12535/TNS-12535 errors.

This document is based on reported errors and fixes. Where possible, the note numbers are included as a cross reference to reduce duplication. It also includes some information on why the error may have occurred as well as why the fix would work.

Scope

This is intended to assist all levels of engineers and customers and is in addition to any troubleshooting guides written specifically in Oracle Docs.

Details

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

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

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