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TNS:packet Checksum Failure:ORA-12569 when Connecting to the Home Page of Application Express (Doc ID 473522.1)

Last updated on FEBRUARY 18, 2021

Applies to:

Oracle Application Express (APEX) - Version 3.0.1 and later
Information in this document applies to any platform.

Symptoms

After a successful installation, the following error occurs trying to access the home page from
Application Express:

Error
Service temporary unavailable

 

 

The underlying Oracle error that appears in the HTTP Server error_log is:

 

ORA-12569 TNS:packet checksum failure




-- Steps To Reproduce:
http://hostname:port/pls/apex/apex

Cause

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In this Document
Symptoms
Cause
Solution

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