How to check progress of a long running statistics gathering job

If you have a long-running statistics job running, you can check it from v$session_longops:

For example, you execute:

SQL> EXECUTE dbms_stats.gather_dictionary_stats;
PL/SQL procedure successfully completed.

Check progress with:

SQL> select sofar, totalwork,units,start_time,time_remaining,message  
     from v$session_longops
     where opname = 'Gather Dictionary Schema Statistics';

SOFAR  TOTALWORK UNITS                START_TIM TIME_REMAINING MESSAGE
---------- ---------- -------------------- --------- -------------- ------------------------------------------------
       423        423 Objects              03-JUN-14              0 Gather Dictionary Schema Statistics: Dictionary Schema : 423 out of 423 Objects done