Hi @JAGGU SRU,
Seems like a 32bit vs 64bit issue, so you need to install two version to test and you can refer to this link: https://stackoverflow.com/questions/39776069/ssdt-in-visual-studio-2015-oracle-connection-issue.
For more details, you could refer to https://learn.microsoft.com/en-us/sql/reporting-services/report-data/oracle-connection-type-ssrs?view=sql-server-2017 and https://learn.microsoft.com/en-gb/archive/blogs/dataaccesstechnologies/configure-oracle-data-source-for-sql-server-reporting-services-ssdt-and-report-server
Regards,
Zoe Hui
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