EXAMPLE: Scripting package DDL changes to run in SQL Developer console

package_ddl_script_example.sql

DECLARE

    l_example_pkg_spec VARCHAR2(32767) := q'~
create or replace package EXAMPLE_PKG AS
  -- spec definition here
end;
~';

    l_example_pkg_body VARCHAR2(32767) := q'~
create or replace package body EXAMPLE_PKG AS
  -- body definition here...
end;
~';

BEGIN
    EXECUTE IMMEDIATE l_example_pkg_spec;
    EXECUTE IMMEDIATE l_example_pkg_body;
    -- ...
END;
/