Seeking a solution for synchronization of sequences in expdp

Question

Hi all,
When i am exporting tablespaces from a live database, first the tables are being exported and then the sequences. and while these sequences are being exported, as this is the live database, the sequences are getting modified because of new insertions. So i am getting a conflict with sequences not being exported correctly.
I am using Linux OS with oracle version 10.2.0.4
Please provide me a solution for this.
Thanks & Regards,
Ravi kumar

Answer 1

Sequences get exported before the table data. I find that kind of annoying too that the sequences can be behind the data after an import. To get around this problem I run the following to create a script that will regen the sequences. Do this any time after the export is complete and you will have no problem.
set linesize 300
set heading off
set trimspool on
set trimout on
set pagesize 0
spool regen_seq.sql
Select 'DROP SEQUENCE '       || sequence_owner ||'.' || sequence_name || ';' || chr(10)
                              ||
       'CREATE SEQUENCE '             || sequence_owner ||'.' || sequence_name ||
       ' MINVALUE '                   || min_value     ||
       ' MAXVALUE '                   || max_value     || chr(10) || '      ' ||
       ' INCREMENT BY '               || increment_by  ||
--       ' START WITH 1'                 ||
       ' START WITH '                 || last_number   ||
       ' CACHE '                      || DECODE(cache_size, 0, 20, 1, 20, cache_size)    ||
--       ' CACHE '                      || cache_size    ||
       ' '                            || DECODE(order_flag,'N','NOORDER', 'ORDER')  ||
       ' '                            || DECODE(cycle_flag,'N','NOCYCLE', 'CYCLE')  ||
       ';'                            || chr(10) || chr(10) || chr(10)
  From dba_sequences
Where sequence_owner = '<my schema>'
spool off