The limit is more in the number of requests loaded than the size of the table.
In case of a large number of requests in an ODS refer to note 620361 "Data loading erformance/Admin. data target"
This system limitation for the maximum number of requests for one ODS/cube is also described in the Notes 543212 and 892513.
To summarize, don't let your ODS get more than 10K requests.