Apex Listener / SQL Developer giving HTTP/1.1 503 Service Unavailable (Doc ID 1582208.1)

Last updated on SEPTEMBER 20, 2016

Applies to:

Oracle REST Data Services - Version 2.0.1 and later
Oracle SQL Developer - Version 3.2 and later
Oracle Application Express (formerly HTML DB) - Version 4.1 and later
Information in this document applies to any platform.

Symptoms

Trying to administer Apex Listener from SQL Developer, this is failing with error "HTTP/1.1 503 Service Unavailable".

This can occur after an upgrade of the APEX Listener from 2.0.0 to a later version or for a new installation of the APEX Listener 2.0.1 and above.

Cause

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