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"The connection closed unexpectedly" or "Forwarded connection refused by server: Connect failed [Connection timed out]" Errors Encountered Connecting to DIPC Classic Studio via VNC (Doc ID 2398605.1)

Last updated on MARCH 18, 2024

Applies to:

Data Integration Platform Cloud Classic - Version 17.3.5 and later
Oracle Data Integrator Cloud Service - Version 17.1.3 and later
Information in this document applies to any platform.


This knowledge article reflects updated product names. Data Integration Platform Cloud (DIPC) was formerly known as Autonomous Data Integration Platform Cloud (ADIPC). Data Integration Platform Cloud Classic (DIPC Classic or DIPC-C) was formerly known as Data Integration Platform Cloud (DIPC). Please see KM <document 2493395.1> for the full list of recently renamed PaaS services.

There is a failure to connect to ODI Studio ODICS or DIPC-C using VNC Viewer.

While this article is geared toward DIPC-C, it will also apply to ODICS.

When attempting to access the Data Integration Platform Cloud Classic (DIPC-C) or Oracle Data Integrator Cloud Service (ODICS) server or Studio using VNC Viewer, the connection cannot be made.

PuTTy can connect, and the VNC Server has been started in the virtual machine using the 'opc' user.

NOTE: In this article, port values used represent a fictitious sample for clarity and your actual values used may be different in your environment. Any similarity to actual environments, past or present, or users, living or dead, is purely coincidental and not intended in any manner.

The following errors might be seen.


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