How to recreate DDL of a table manually?

Yes, there are many Oracle utilities and packages that enables us to recreate an oracle tables source code manually.

Some of the packages and utilities include but not limited  to:

• Oracle  data pump
•  DBMS_METADATA package
• IMP and EXP utilities

For example:

SQL> conn mereba/mereba@orcl
Connected.
SQL> create table mereba ( id number, name varchar2(30));
 Table created.
 SQL> select dbms_metadata.get_ddl('TABLE','MEREBA') from dual;
 DBMS_METADATA.GET_DDL('TABLE','MEREBA')
--------------------------------------------------------------------------------
   CREATE TABLE "MEREBA"."MEREBA"
   (    "ID" NUMBER,
        "NAME" VARCHAR2(30)
   )