What Is Sys Doing??

Can someone point me to what activity SYS is up to here?

      SELECT NVL(SUM(TIME_WAITED/1000), 0)
FROM SYS.DBA_HIST_ACTIVE_SESS_HISTORY S, SYS.WRH$_SEG_STAT_OBJ SO, SYS.WRM$_SNAPSHOT SN , SYS.OBJ$ OBJ
WHERE SN.SNAP_ID = S.SNAP_ID AND SN.DBID = S.DBID AND SN.BEGIN_INTERVAL_TIME >= (CURRENT_TIMESTAMP - NUMTODSINTERVAL(30, 'day')) AND S.CURRENT_OBJ# = SO.OBJ# AND S.WAIT_CLASS = 'User I/O' AND S.WAIT_TIME = 0 AND SO.DATAOBJ# = :B1 AND OBJ.OBJ# = SO.OBJ# AND OBJ.DATAOBJ# = SO.DATAOBJ#
xoxomosAsked:
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sdstuberCommented:
looks like it's checking which objects have had significant waits on them.
I'm assuming whatever process reads these results sorts them as well to find long wait times vs short

Probably as part of automatic tuning
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xoxomosAuthor Commented:
Yep, thanks.
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