declare
l_handle    NUMBER;
begin
    l_handle := DBMS_DATAPUMP.open(
        operation => 'IMPORT',
        job_mode => 'TABLE',
        job_name => 'TEST');
    DBMS_DATAPUMP.add_file(
        handle => l_handle,
        filename => 'TEST.dmp',
        directory => 'TEST'
        );       
    DBMS_DATAPUMP.add_file(
        handle => l_handle,
        filename => 'TESTLOG_IMP.log',
        directory => 'TEST',
        filetype => DBMS_DATAPUMP.KU$_FILE_TYPE_LOG_FILE
        );
    DBMS_DATAPUMP.METADATA_REMAP
    (handle => l_handle,
    name => 'REMAP_SCHEMA',
    old_value => 'SCHEMA_1',
    value => 'SCHEMA_2');    
         DBMS_DATAPUMP.set_parameter(
        handle => l_handle,
        name => 'TABLE_EXISTS_ACTION',
        value => 'APPEND');
    DBMS_DATAPUMP.start_job(l_handle);
    DBMS_DATAPUMP.detach(l_handle);
end;