I would recommend to install v10.5fp3 connector for IBM DB2 from Tableau Drivers page: https://www.tableau.com/support/drivers
Tableau IBM DB2 online help article provide additional information about recommended configuration.
I hope this help
we have tryed it using this other Version of the DB2 connector but with the same result. We are able to see all Sys Schema but not the tables inside them...
I have no idea what it could be.
Thanks for your help anyway.