To Create Feature-Linked Text

Create the table with one geometry column, one ID, one angle field, and one foreign key.
CREATE TABLE LINKED_TEXT

(Id NUMBER PRIMARY KEY,

LinkedID NUMBER,

Angle NUMBER,

GEOMETRY MDSYS.SDO_GEOMETRY);
Insert the table metadata in the Oracle Spatial metadata.
INSERT INTO USER_SDO_GEOM_METADATA (TABLE_NAME, COLUMN_NAME, DIMINFO, SRID)

VALUES (‘LINKED_TEXT', 'GEOMETRY',

MDSYS.SDO_DIM_ARRAY

(MDSYS.SDO_DIM_ELEMENT('X', 714099.913898663, 715312.343907550, 0.000000050),

MDSYS.SDO_DIM_ELEMENT('Y', 4908438.586694972, 4910715.465519385, 0.000000050)),

82247);

COMMIT;
Create the spatial index of type point to use rotation.
CREATE INDEX linkedtext_idx ON linked_text(Geometry)

INDEXTYPE IS MDSYS.SPATIAL_INDEX PARAMETERS ('layer_gtype=point');
Create the foreign key constraint defining the feature-linked text.
alter table LINKED_TEXT

add constraint LINKEDTEXT_FK

foreign key(LINKEDID)

references LINE(ID)

ON DELETE CASCADE;