Extracting DDLs from Oracle

DBMS_METADATA

This example extracts DDLs of every tableand index from scott, run it in sqlplus:

set pagesize 0    ---Doesnot display column names.

set long 90000    ---9000bytes of cache in local machine for LONG datatype

set feedback off  --Does not displaymessages like "PL/SQL procedure successfully completed"

set echo off         --START command does not list each command in a script. as       --thecommand is executed.

spool scott_schema.sql --Spool to a file

connect scott/tiger@orcl;   --Connectingas scott

SELECT DBMS_METADATA.GET_DDL('TABLE',u.table_name) FROM USER_TABLES u;

SELECT DBMS_METADATA.GET_DDL('INDEX',u.index_name) FROM USER_INDEXES u;
spooloff;           --Turn offspool

exp

exp scott/123456@pdborcl grants=N indexes=Y triggers=N record=N Statistics=None wner=scott
Creates expdat.dmp in current directory, you need to manually edit the file to eliminate useless content.

Database Export of SQL Developer

Select "Tools" --> "Database Export", and a wizard will guide you through the whole process. It gives you the choice to :
1. Export the storage parameters
2. Export the data
3. Select the objects (tables, indexes, views, MVs, db links, packages, procedures) to export.