Get Current Schema and DB name

DECLARE
   CURSOR ashish_db_name
   IS
      SELECT NAME
      FROM   v$database;
   My_db_name   VARCHAR2 (4000);
BEGIN
   OPEN ashish_db_name;
   FETCH ashish_db_name
   INTO  My_db_name   ;
   CLOSE ashish_db_name;

htp.p('Schema Name:'||SYS_CONTEXT ('USERENV',
                              'CURRENT_SCHEMA'
                              ));
htp.p('My DB Name:'|| My_db_name   );
END;