There is an "obscore" table in the "tap_schemas" "schema" on the RSP TAP service.
It's created by 1000_table_create.sql and filled by 1001_data_insert.sql.
The table seems to contain some test data from CADC. I'm not sure what its origin is, but there's no TAP-standard reason for having an "obscore" table in the "tap_schema" schema, so I would suggest removing this table altogether, at least from non-development instances.
(For an ObsTAP service, the conformant location of the data table is in the "ivoa" schema, i.e., as "ivoa.ObsCore".)
At the moment, the presence of this table is triggering an unrelated bug in Brian Van Klaveren's ObsTAP search logic, which we will fix, but even apart from this I'd be happier if we removed this table.
Of course, if there's a reason for its presence that I haven't absorbed, that's another matter.