When a connection is established using Teradata SQL Driver for R, there may be some instances when DBI::dbListTables function may not list all the tables in a database and may error out with the following message:
no slot of name "ptr" for this object of class "Teradata"
To avoid getting this error, uninstall the ODBC R package or create a connection object using DBI::dbConnect and use that as parameter for the DBI::dbListTables function.