Export d'une certaine période sur Oracle

Bonjour,
Vous pouvez utiliser la procédure dbms_datapump.data_filter.
Par exemple:
Code:
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--Oracle 11.1.0.7
set serveroutput on size 100000
declare
    V_DMP_NAME  constant  VARCHAR2( 400 ) :=   'THIS_YEAR';
    V_START_DATE  constant   DATE :=   trunc(sysdate,'YEAR');   
    V_SOURCE_SCHEMA constant   VARCHAR2(30):='TEST';
    V_DIRECTORY    constant VARCHAR2(30) := 'DATA_PUMP_DIR';
    --
    V_HANDLE NUMBER;
    job_state VARCHAR2( 400 );
    V_DATE_STR  VARCHAR2(400 ) := 'to_date('''||to_char(V_START_DATE,'DD/MM/YYYY')||''',''DD/MM/YYYY'')';
begin
    V_HANDLE := dbms_datapump.open (operation => 'EXPORT', job_mode => 'SCHEMA', job_name => V_DMP_NAME ||'_EXP', version => 'COMPATIBLE');
    dbms_datapump.add_file(handle => V_HANDLE, filename =>  V_DMP_NAME || '.DMP', directory => V_DIRECTORY, filetype => dbms_datapump.KU$_FILE_TYPE_DUMP_FILE );     
    dbms_datapump.add_file(handle => V_HANDLE, filename =>  V_DMP_NAME ||'_EXPORT.LOG', directory => V_DIRECTORY, filetype => dbms_datapump.KU$_FILE_TYPE_LOG_FILE); 
    dbms_datapump.metadata_filter(handle => V_HANDLE, name => 'SCHEMA_EXPR', value => 'IN('''||V_SOURCE_SCHEMA||''')');     
 
    --une table parente:
    dbms_datapump.data_filter( handle=>V_HANDLE ,name=>'SUBQUERY' ,schema_name=> V_SOURCE_SCHEMA ,table_name=>'ORDER',value=>
        'where ORDER_ID in (select CO.ORDER_ID from '||V_SOURCE_SCHEMA||'.ORDER CO '
        ||' where CO.CREATE_TIME >= '|| V_DATE_STR || ' and not exists '
        ||' ( select 1 from '||V_SOURCE_SCHEMA||'.ORDER CO2 where CO2.ORDER_ID = CO.PARENT_ORDER_ID and CO2.CREATE_TIME < '|| V_DATE_STR 
        ||'))'
        );
    --une table fille
    dbms_datapump.data_filter( handle=>V_HANDLE ,name=>'SUBQUERY' ,schema_name=> V_SOURCE_SCHEMA ,table_name=>'ITEM',value=>
        'where ITEM_ID in (select IT.ITEM_ID from '||V_SOURCE_SCHEMA||'.ITEM IT where exists'
        ||'(select 1 from '||V_SOURCE_SCHEMA||'.ORDER CO where CO.ORDER_ID = IT.ORDER_ID and CO.CREATE_TIME >='||V_DATE_STR
        ||' and not exists '
        ||'(select 1 from '||V_SOURCE_SCHEMA||'.ORDER CO2 where CO2.ORDER_ID = CO.PARENT_ORDER_ID and CO2.CREATE_TIME <' ||V_DATE_STR ||')'
        ||'))'
        ); 
    --
    dbms_datapump.start_job(handle => V_HANDLE, skip_current => 0, abort_step => 0); 
    dbms_datapump.wait_for_job(handle => V_HANDLE , job_state=> job_state ); 
    dbms_output.put_line( 'job_state= '|| job_state );
end;
/