Migrate Partition Tables

Question

What is the best way to migrate partition tables from one oracle instance to another? I noticed when using CTAS statement and import/export utilitiy, Oracle migrates the table as a regular table and not as a partitioned table.

Answer 1

CTAS can be used to create a partitioned table, but you need to specify the partitioning in the CREATE TABLE part of the statement.
Use DBMS_METADATA.GET_DDL to extract the DDL for the table, like this:
SELECT dbms_metadata.get_ddl('TABLE',table_name) FROM user_tables;Then modify it into your CTAS statement.
For example:
create table part_table
  partition by range (timestamp)
  (partition aug15 values less than (to_date('16-aug-2008','DD-mon-YYYY'))
  ,partition aug16 values less than (to_date('17-aug-2008','DD-mon-YYYY'))
  ,partition aug17 values less than (to_date('18-aug-2008','DD-mon-YYYY'))
  ,partition aug18 values less than (to_date('19-aug-2008','DD-mon-YYYY'))
  ,partition aug21 values less than (to_date('22-aug-2008','DD-mon-YYYY'))
  ,partition aug22 values less than (to_date('23-aug-2008','DD-mon-YYYY'))
  ,partition other values less than (MAXVALUE)
  ) tablespace USERS
as select * from non_part_table@my_dblink;