Oracle - How to generate script from sql developer

Question

Hi All,

Can anyone please let me know, How to take script for schema of the tables, stored procedures of Oracle through SQL Developer..?

Thanks in Advance.

Mahesh

Answer 1

use the dbms_metadata package, as described here

Answer 2

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.

Answer 3

Hi Thanks for the reply,

But if suppose i want script for all the tables at a time... Then what i need to to...

Thanks, Mahesh

Answer 4

The basic answer appears to be 'use the dbms_metadata package'. The axuilliary question is:

But what if I want to generate a script for all the tables at a time?

And the answer, presumably, is to interrogate the system catalog for the names and owners of all the tables:

SELECT dbms_metadata.get_ddl('TABLE', s.tabname, s.tabowner)
  FROM system_catalog_describing_tables AS s
 WHERE ...any conditions that are needed...

I'm not sufficiently familiar with Oracle to know the system catalog. In Informix, which I do know, assuming that there was a procedure dbms_metadata.get_ddl, the query would be:

SELECT dbms_metadata.get_ddl('TABLE', s.tabname, s.owner)
  FROM "informix".systables AS s
 WHERE tabid >= 100 AND tabtype = 'T';

In Informix, tabids less than 100 are reserved for the system catalog, and non-tables (views, synonyms, sequences and a few other esoteric things) are excluded by requiring the right 'tabtype'.

Answer 5

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...

Answer 6

I did not know about DMBS_METADATA, but your answers prompted me to create a utility to script all objects owned by an Oracle user.