PDOException: SQLSTATE[23000]

When i try to clear the cache it gives me the following error...

PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'OAuthException-class' for key 'PRIMARY': INSERT INTO {registry} (name, type, filename, module, weight) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4), (:db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9), (:db_insert_placeholder_10, :db_insert_placeholder_11, :db_insert_placeholder_12, :db_insert_placeholder_13, :db_insert_placeholder_14), (:db_insert_placeholder_15, :db_insert_placeholder_16, :db_insert_placeholder_17, :db_insert_placeholder_18, :db_insert_placeholder_19), (:db_insert_placeholder_20, :db_insert_placeholder_21, :db_insert_placeholder_22, :db_insert_placeholder_23, :db_insert_placeholder_24), (:db_insert_placeholder_25, :db_insert_placeholder_26, :db_insert_placeholder_27, :db_insert_placeholder_28, :db_insert_placeholder_29), (:db_insert_placeholder_30, :db_insert_placeholder_31, :db_insert_placeholder_32, :db_insert_placeholder_33, :db_insert_placeholder_34), (:db_insert_placeholder_35, :db_insert_placeholder_36, :db_insert_placeholder_37, :db_insert_placeholder_38, :db_insert_placeholder_39), (:db_insert_placeholder_40, :db_insert_placeholder_41, :db_insert_placeholder_42, :db_insert_placeholder_43, :db_insert_placeholder_44), (:db_insert_placeholder_45, :db_insert_placeholder_46, :db_insert_placeholder_47, :db_insert_placeholder_48, :db_insert_placeholder_49), (:db_insert_placeholder_50, :db_insert_placeholder_51, :db_insert_placeholder_52, :