Tableau Bridge Extract Refresh Takes Longer Than Expected and May Result in 15-Minute Timeout Failures for Embedded Data Sources and Virtual Connections

When utilizing Tableau Bridge to connect to data or perform Extract Creation involving an embedded data source or a Virtual Connection, one of two primary symptoms may be observed:

1. Extended Duration: The connection process may take longer than anticipated to complete.

2. Timeout Failure: The connection attempt may result in a 15-minute timeout failure, typically generating the error:
   Unknown error: TableauException: An error occurred while accessing data. Contact your Tableau administrator. (code=13).

To verify the extract creation task type, refer to Using Embedded Data Sources > Viewing refresh jobs

The issue stems from how Tableau Bridge handles these specific types of extracts:

1. Execution as a Live Query: Embedded Data Sources and Virtual Connection extracts refreshed via Tableau Bridge utilize a live query mechanism. The extract file (hyper file) is written on the Tableau Cloud rather than on the Tableau Bridge client machine. 

2. 15-Minute Timeout Limit: The live query process has 15-minute timeout limit. If the data processing or network latency causes the operation to exceed this limit, the job is canceled, resulting in the code=13 failure.

For more information on the limit, see Plan Your Bridge Deployment > Timeout limits.