12.2 or later STATSPACK: Idle Wait Event Such as ‘Data Guard: Timer’,’pman timer’ are Erroneously Included in Top 5 Timed Events

Hello,

The newly added idle wait events is erroneously included in the “Top 5 Timed Events” section in 12.2 or later:

Top 5 Timed Events                                                         Avg %Total
~~~~~~~~~~~~~~~~~~                                                        wait   Call
Event                                            Waits    Time (s)        (ms)   Time
—————————————– ———— ———– ———– ——
Data Guard: Timer                                    8       4,800 600,000.97   33.3 <<== Idle event
pman timer                                       1,548       4,644    2,999.89   32.2 <<== Idle event
Data Guard: Gap Manager                             77       4,620   60,000.57   32.0 <<== Idle event
log file sync                                   38,168         250        6.55    1.7
CPU time                                                        56                 .4

This is due to following bug:

Bug 28523746 – STATSPACK: TOP 5 TIMED EVENTS CONTAINS IDLE WAIT EVENTS
Bug 31397022 – STATSPACK:IDLE WAIT EVENTS MISSING IN STATS$IDLE_EVENT

A new idle wait event is missing in perfstat.STATS$IDLE_EVENT.

For the solution; Add missing idle event rows manually into STATS$IDLE_EVENT table.

connect perfstat/<PASSWORD>

insert into stats$idle_event
select name from v$event_name where wait_class='Idle' minus select event from stats$idle_event;

commit;