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I'm trying to create an extract of my data source to speed performance.  I've done this before in the past with no issues, but something is going wrong this time.  Each time I try, it runs really really slow (the importing data message bar crawls along) and eventually fails with these error messages.

 

An error occurred while communicating with data source 'Data Feed + Joins'.

 

Bad Connection: Tableau could not connect to the data source.

Error Code: 99B8459D

Unable to create extract

 

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An error occurred while communicating with data source 'Data Feed + Joins'.

 

Bad Connection: Tableau could not connect to the data source.

Error Code: 3834CEBA

[1745] hyper_execute_query: 0 schema "db1001"."TableauTemp" does not exist

 

Stuff I'm reading online says it could be an issue with hdd space or memory?  I have 34 GB free on hdd, so I don't think that is the issue.  I'm checking task manager while the extract runs and it is maxing out on memory.  I followed a tableau tutorial on how to clear the tableau cache, but that seems to have made no difference at all.  Every time I try the extract, whenever it gets around 70k rows it goes over 90% usage on memory and then practically freezes.  Issue is, my data source has roughly 800k rows. 

Error creating extract (

 

Anybody seen this before?  Know what to do to get around it?

23 answers
  1. Apr 8, 2020, 5:31 PM

    Thanks for the nudge null - I didn't see a notice from Robert's mention...

     

    The regions that I suggested were from the US Census.  They have three different levels of detail available - try the 1:5m or 1:20m version?  Those will be much simpler geometries.

     

    Edit[2]: Here is the link to the Census data to download regions:

    Cartographic Boundary Files - Shapefile

     

    Scroll down and you'll find the regions at three different scales:

    cb_2018_us_region_500k.zip   [2.2 MB]

    cb_2018_us_region_5m.zip   [<1.0 MB]

    cb_2018_us_region_20m.zip   [<1.0 MB]

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