Definition: In Oracle PL/SQL, SDO_MIGRATE is a built in package which is used during upgrading process of geometry tables from past releases of Oracle Spatial.
TO_CURRENT is the only subprogram which Oracle recommends for use. Its other subprograms SDO_MIGRATE.TO_81X, SDO_MIGRATE.FROM_815_TO_81X, or SDO_MIGRATE.TO_734 have been deprecated from Oracle.