same SQL picking different sqlid's

select module,program,event,sid,last_call_et,sql_id from v$session where status='ACTIVE' and username<>'SYS';

aqtv9.exe                                                        aqtv9.exe                                        db file sequential read                                                 155           55 gytz18vqbvrh8
QUERY_MANAGER                                                     (TNS V1-V3)                    db file sequential read                                                 539          873 4k1dxxrz26ncj

3 rows selected.

SQL> /

The same sql is picking up different sqlid's when run from dif tools one sqlid takes 60 seconds and other one takes hours

Regards,

Vishal