ORA-01750

Error: ORA-01750: UPDATE/REFERENCES may only be REVOKEd from the whole table, not by column

Causa: Although it is possible to GRANT update privileges on a column-by-column basis, it is only possible to REVOKE them for an entire table.

Acción: Do not identify specific columns. To revoke update privileges for certain columns, use REVOKE for the entire table and GRANT the user privileges for specific columns.