Metadata of tables in SQL file

Question

I want to get SQL file which will have script to create table strucure in the database.
How i can achive with the EXPDP/exp? or any other option.
Thanks,

Answer 1

The best way to do so would be to dbms_metadata.get_ddl package which cna extract the ddl's of the objects for you. If you want to use datapump, that's also possible.
Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
SQL> create directory dir1 as '/u01/app/oracle/';
Directory created.
SQL> grant all on directory dir1 to public;
Grant succeeded.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
[oracle@edhdr2p0-orcl ~]$ expdp aman/aman directory=dir1 dumpfile=expdp.dmp tables=scott.emp
Export: Release 11.2.0.1.0 - Production on Wed Aug 11 14:34:45 2010
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
Starting "AMAN"."SYS_EXPORT_TABLE_01":  aman/******** directory=dir1 dumpfile=expdp.dmp tables=scott.emp
Estimate in progress using BLOCKS method...
Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 64 KB
Processing object type TABLE_EXPORT/TABLE/TABLE
Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
. . exported "SCOTT"."EMP"                               8.570 KB      14 rows
Master table "AMAN"."SYS_EXPORT_TABLE_01" successfully loaded/unloaded
Dump file set for AMAN.SYS_EXPORT_TABLE_01 is:
  /u01/app/oracle/expdp.dmp
Job "AMAN"."SYS_EXPORT_TABLE_01" successfully completed at 14:35:12
[oracle@edhdr2p0-orcl ~]$ impdp aman/aman directory=dir1 dumpfile=expdp.dmp tables=scott.emp sqlfile=mysql.sql
Import: Release 11.2.0.1.0 - Production on Wed Aug 11 14:36:03 2010
Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, Automatic Storage Management, OLAP, Data Mining
and Real Application Testing options
Master table "AMAN"."SYS_SQL_FILE_TABLE_01" successfully loaded/unloaded
Starting "AMAN"."SYS_SQL_FILE_TABLE_01":  aman/******** directory=dir1 dumpfile=expdp.dmp tables=scott.emp sqlfile=mysql.sql
Processing object type TABLE_EXPORT/TABLE/TABLE
Processing object type TABLE_EXPORT/TABLE/INDEX/INDEX
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
Processing object type TABLE_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
Job "AMAN"."SYS_SQL_FILE_TABLE_01" successfully completed at 14:36:07
[oracle@edhdr2p0-orcl ~]$ more /u01/app/oracle/mysql.sql
-- CONNECT AMAN
ALTER SESSION SET EVENTS '10150 TRACE NAME CONTEXT FOREVER, LEVEL 1';
ALTER SESSION SET EVENTS '10904 TRACE NAME CONTEXT FOREVER, LEVEL 1';
ALTER SESSION SET EVENTS '25475 TRACE NAME CONTEXT FOREVER, LEVEL 1';
ALTER SESSION SET EVENTS '10407 TRACE NAME CONTEXT FOREVER, LEVEL 1';
ALTER SESSION SET EVENTS '10851 TRACE NAME CONTEXT FOREVER, LEVEL 1';
ALTER SESSION SET EVENTS '22830 TRACE NAME CONTEXT FOREVER, LEVEL 192 ';
-- new object type path: TABLE_EXPORT/TABLE/TABLE
CREATE TABLE "SCOTT"."EMP"
   (    "EMPNO" NUMBER(4,0),
        "ENAME" VARCHAR2(10 BYTE),
        "JOB" VARCHAR2(9 BYTE),
        "MGR" NUMBER(4,0),
        "HIREDATE" DATE,
        "SAL" NUMBER(7,2),
        "COMM" NUMBER(7,2),
        "DEPTNO" NUMBER(2,0)
   ) SEGMENT CREATION IMMEDIATE
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DE
FAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS" ;
HTH
Aman....