declare
 l_job NUMBER;
 status VARCHAR2(20);
begin
l_job := dbms_datapump.open( 'IMPORT', 'SCHEMA');
dbms_datapump.add_file( handle=>l_job,  filename=>'EXPLOCAL5.DMP', directory=>'DATA_PUMP_DIR',filetype => DBMS_DATAPUMP.ku$_file_type_log_file);
dbms_datapump.add_file( handle=>l_job, filename=>'implog'||to_char(sysdate,'HH24MISS')||'.txt', directory=>'DATA_PUMP_DIR', filetype=>dbms_datapump.KU$_FILE_TYPE_LOG_FILE);
DBMS_DATAPUMP.metadata_filter(handle => l_job, name => 'SCHEMA_EXPR', VALUE => q'[= 'UUU']');
dbms_datapump.start_job(handle=>l_job);
end;
/

rror report -
ORA-39002: недопустимая операция
ORA-06512: на  "SYS.DBMS_DATAPUMP", line 5594
ORA-06512: на  line 10
39002. 00000 -  "invalid operation"
*Cause:    The current API cannot be executed because of inconsistencies
           between the API and the current definition of the job.
           Subsequent messages supplied by DBMS_DATAPUMP.GET_STATUS
           will further describe the error.
*Action:   Modify the API call to be consistent with the current job or
           redefine the job in a manner that will support the specified API.