Oracle - How to generate script from sql developer

Question

SQL Developer -> Tools -> Database Export...

If you want to see DDL for the objects, you can use

select dbms_metadata.get_ddl('OBJECT_TYPE','OBJECT_NAME','OBJECT_OWNER') 
  from dual
/

For example this will give you the DDL script for emp table.

select dbms_metadata.get_ddl('TABLE','EMP','HR') 
  from dual
/

You may need to set the long type format to big number. For packages, you need to access dba_source, user_source, all_source tables. You can query for object name and type to see what code is stored.

This worked for me:

• In SQL Developer, right click the object that you want to generate a script for. i.e. the table name
• Select Quick DLL > Save To File
• This will then write the create statement to an external sql file.

Note, you can also highlight multiple objects at the same time, so you could generate one script that contains create statements for all tables within the database.

In Oracle the location that contains information about all database objects including tables and stored procedures is called the Data Dictionary. It is a collection of views that provides you with access to the metadata that defines the database. You can query the Data Dictionary views for a list of desired database objects and then use the functions available in dbms_metadata package to get the DDL for each object. Alternative is to investigate the support in dbms_metadata to export DDLs for a collection of objects.

For a few pointers, for example to get a list of tables you can use the following Data Dictionary views

• user_tables contains all tables owned by the user
• all_tables contains all tables that are accessible by the user
• and so on...