#Tableau34 debatiendo

Hello all, 

I have (Recently upgraded the servers to version 2026.2.1) Linux server and using tnsnames.ors files for Oracle DB connections. Also has the 'ojdbc11.jar' driver file placed at /opt/tableau/tableau_driver/jdbc location.  

(Note: Other data extracts or refreshes works normally. only issue with this recently created flow which outputs multiple files) 

I see one of the prep flows on the server is failing with ERROR: "

Output step error message: [FailedToConnectExternalResourceError] - Unable to connect to DataSource_Name on DataSource_Name. Check that the data source is available, or edit the connection and enter your credentials again

" 

When I check connection from the panel 'Test Connection' works and shows successful, but at the runtime this flow fails.  

I have tnsfiles.ora with proper DB connection names and have placed the 'oracle.properties' file with the string 'oracle.net.tns_admin=/etc' within at locations: 

1. /var/opt/tableau/tableau_server/data/tabsvc/flowminerva/Datasources/oracle.properties 

2./var/opt/tableau/tableau_server/data/tabsvc/minerva/Datasources/oracle.properties 

3./var/opt/tableau/tableau_server/data/tabsvc/vizqlserver/Datasources/oracle.properties  

also, just now added the file at - 

4. /var/opt/tableau/tableau_server/data/tabsvc/flowprocessor/Datasources/oracle.properties

Any idea what can I check for?  

Thank you! 

#Tableau Server  #Flow  #Tableau

How to change the font of transaction type to match same as the number values .For example - Production Order Picking should be blue same as its value . Please have a look at the screenshots .It has to match the transaction type legend .Thankyou   

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Bug: Radial/Sankey chart in Show Me corrupts workbook (Error D2E8DA72) even after Undo

Summary: 

Clicking on the Radial or Sankey chart type in the "Show Me" panel — even briefly, and even if immediately undone — permanently corrupts the workbook file. Saving and reopening the file afterward fails with Error Code D2E8DA72. 

Environment: 

- Tableau Desktop, Professional Edition 

- Version 2026.2.0 (20262.26.0603.1643) 

- Windows 

Steps to Reproduce: 

1. Open any workbook (new or existing) in Tableau Desktop 2026.2.0 

2. Select a worksheet and open the "Show Me" panel 

3. Click on the Radial (or Sankey) chart type once 

4. Immediately press Ctrl+Z (Undo) 

5. Save the workbook as a packaged .twbx file 

6. Close Tableau Desktop 

7. Reopen the same .twbx file 

Expected Result: 

The workbook should open normally, since the chart type was undone and never appears on any sheet. 

Actual Result: 

Tableau fails to load the workbook with the following error: 

Error Code: D2E8DA72 

Error: no declaration found for element 'worksheet-extension' 

Error: attribute 'extension-version' is not declared for element 'worksheet-extension' 

Error: attribute 'id' is not declared for element 'worksheet-extension' 

Error: element 'worksheet-extension' is not allowed for content model '(document-format-change-manifest,(dashboard-extension),resources?)' 

Root Cause (as far as I can diagnose): 

Even though the chart action is undone and never persists visibly in the workbook, Tableau still writes a <referenced-extensions> manifest block into the underlying .twb XML the moment the chart type is clicked. This manifest references the built-in extension (e.g. com.tableau.extension.radial) but appears to be incompatible with the workbook's own internal file-format version, causing Tableau's own XML validator to reject the file on the next load. This happens even in a workbook that never uses the chart on any actual sheet. 

Workaround (manual): 

1. Rename the .twbx file to .zip 

2. Extract the zip 

3. Open the .twb file in a text editor 

4. Search for "referenced-extensions" 

5. Delete the entire block from <referenced-extensions> to </referenced-extensions> 

6. Save the .twb file 

7. Re-zip the .twb file along with the Data folder 

8. Rename the new zip back to .twbx 

The file then opens normally with no loss of dashboard content. 

Impact: 

This is a significant reliability risk since: 

- It occurs with no warning at the time the chart is clicked or undone 

- It can silently corrupt a file that appears completely fine until the next reopen 

- It could affect students/professionals submitting workbooks for grading or review, since a file that worked when last saved may fail to open for the recipient 

I'm happy to share the exact corrupted and fixed .twb/.twbx files if useful for reproducing or debugging this on your end. 

I have a complicated issue due to how the shareholders want the data displayed and the calculations involved. 

What I am trying to do is simply get for Month 1 for the [Projected Carry From Prior Month] to be  

Month 0 ([Shipments Calc] + Month 0 [LOD Actual Demand]) -  Month 0 [Forecast) resulting in 24,422 ((14,490 + 111,872)-101,940). 

I kept the Old Formula for the [Projected Carry From Prior Month] metric in the workbook as it is made up of three calculations. The issue is when i bring in [LOD Actual Demand] I get the error of cannot mix aggregate and non-aggregate. No matter what I try I cant get the error to fix unless I break the [LOD Actual Demand] by taking off the additional SUM in the formula which results in the wrong answer. Any help would be greatly appreciated. Tried multiple  

Expected End Result of formula: 

Month 0 is 0 by default since there is no carryover. So for  

Month 0 the calc should show 0,  

Month 1 the calc should show 24,422 

Month 2 the calc should show 12,844 

Month 3 the calc should show 13,756 

 resources before asking here and they could not figure this out 

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#Tableau Desktop & Web Authoring  #LOD  #Formulas  #Tableau