Hi Cynthia - what a catch-22!
I understand you don't currently have Tableau Desktop 2018.2 available - I'm guessing your IT department needs to prepare it for installation and you're not able to just download and install 2018.2 directly? But if your organization is running Tableau Server 2018.2, you'll really want to have a matching version of Tableau Desktop available.
There's still hope though - which specific version of Tableau 10 do you have? Is it 10.2 or higher? If so, you can Export As Version to anything from 10.2 to 2018.2 and then publish to Tableau Server 2018.2 from that older version of Tableau Desktop.
For example, if you had Tableau Desktop 10.5:
- In Tableau Desktop 2018.3, select File > Export As Version to save the workbook & datasource in Tableau 10.5 version.
- Open the workbook in Tableau Desktop 10.5
- Publish the datasource to Tableau Server 2018.2
Sounds like you've already looked at this section in the help, just linking it here for the benefit of others who find this thread later: Compatibility between Tableau Desktop and Tableau Server
[shameless plug alert]
Please vote for the following feature request https://community.tableau.com/ideas/9380 so that we can downgrade published data sources just like we can workbooks and don't get stuck in nightmares like this.
[/shameless plug alert]
I did it and thank you for bring it to my attention. I would have done this back with 10 version when it changed to hyper extracts. Because of our volume of users, our servers are upgraded once a year. We have multiple servers and it has been challenging to match between 4 instances.
I am sad to say that downgrading was the only option that worked. I hope you tool will reply to Jonathan's' post below.
I am sorry this didn't work for my to publish the extract. I tried my largest at 2.8 MB. I hope you too will reply to Jonathan's post below.