Unable to Connect to PostgreSQL via Proxy with JDBC Driver in Tableau Prep Builder

Published: 09 Mar 2023
Last Modified Date: 10 Mar 2023


When connecting to PostgreSQL via proxy with JDBC driver in Tableau Prep Builder, the following error messages may appear.

Channel is in state TRANSIENT_FAILURE
Unable to connect to the PostgreSQL server 'xxxxx'. Check that the server is running and that you have access privileges to the requested database.


  • Tableau Prep Builder
  • PostgreSQL
  • JDBC driver
  • Windows


As a workaround, install and use the ODBC driver.

1. Stop all Tableau Prep Builder applications.
2. Delete JDBC driver from "C:\Program Files\Tableau\Drivers" directory, if it exists.
3. Download ODBC driver installer corresponding to your PostgreSQL version from the website below.
    PostgreSQL ODBC driver
4. Install the ODBC driver.


This is an issue with the JDBC driver in an environment where a proxy server is used. 
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