do you still have the Oracle driver installed? Was it installed on new hardware?
Yes Oracle driver is installed on the same hardware
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As a potential solution to the issue the following options are recommended:
- When republishing the workbook, was the data source being used replaced to be the published data source and not the local data source?
Replace Data Sources
- The issue could be tied to permissions, for example the correct connect permissions.
If credentials are embedded for the data source. But the workbook publisher is not embedding credentials in the workbook. This means that users would need the connect permissions for the published data source.
In other words, the only time the users Connect Permissions are irrelevant are when the credentials are embedded in the workbook (not the data source) which the following article was meant to reference: https://onlinehelp.tableau.com/current/server/en-us/datasource_perm_set.htm#embedprompt data source) This is a Tableau security measure to prevent users from accessing published data sources without proper permissions and this is a separate security measure than the data source.
Please refer to the documentation below:
For the database:
For the workbook:
- The issue could be a proxy server issue.
When you try to open a downloaded workbook that contains published data sources, the workbook might be unable to connect to the data sources
The following article guides through the configuration:
Unable to Connect to Published Data Sources When Opening a Workbook Downloaded from Tableau Server http://kb.tableau.com/articles/Issue/error-multiple-tableau-server-connections-are-not-supported-opening-workbook