30536
SQL> alter session set events '10046 trace name context off'；
Session altered.
SQL> alter session set events '10046 trace name context forever，level 12'；
Session altered.
SQL> select count（object_id） from t；
COUNT（OBJECT_ID）
----------------
30536
SQL> alter session set events '10046 trace name context off'；
Session altered.
*** 2006-04-21 11：57：30.000
=====================
PARSING IN CURSOR #1 len=68 dep=0 uid=0 oct=42 lid=0 tim=3404883601 hv=570864185 ad='668b0b0c'
alter session set events '10046 trace name context forever，level 12'
END OF STMT
EXEC #1：c=0，e=107，p=0，cr=0，cu=0，mis=0，r=0，dep=0，og=4，tim=3404883596
WAIT #1： nam='SQL*Net message to client' ela= 7 p1=1111838976 p2=1 p3=0
WAIT #1： nam='SQL*Net message from client' ela= 8723581 p1=1111838976 p2=1 p3=0
=====================
PARSING IN CURSOR #1 len=22 dep=0 uid=0 oct=3 lid=0 tim=3413615443 hv=2199322426 ad='6710b08c'
select count（*） from t
END OF STMT
PARSE #1：c=0，e=791，p=0，cr=0，cu=0，mis=1，r=0，dep=0，og=4，tim=3413615434
BINDS #1：
EXEC #1：c=0，e=962，p=0，cr=0，cu=0，mis=0，r=0，dep=0，og=4，tim=3413622098
WAIT #1： nam='SQL*Net message to client' ela= 6 p1=1111838976 p2=1 p3=0
WAIT #1： nam='db file scattered read' ela= 26551 p1=15 p2=10 p3=127
WAIT #1： nam='db file scattered read' ela= 21707 p1=15 p2=137 p3=128
WAIT #1： nam='db file scattered read' ela= 21034 p1=15 p2=265 p3=128
WAIT #1： nam='db file scattered read' ela= 6274 p1=15 p2=393 p3=34
FETCH #1：c=31250，e=94765，p=417，cr=421，cu=0，mis=0，r=1，dep=0，og=4，tim=3413718512
WAIT #1： nam='SQL*Net message from client' ela= 405 p1=1111838976 p2=1 p3=0
FETCH #1：c=0，e=3，p=0，cr=0，cu=0，mis=0，r=0，dep=0，og=0，tim=3413721284
WAIT #1： nam='SQL*Net message to client' ela= 5 p1=1111838976 p2=1 p3=0
*** 2006-04-21 11：58：34.000
WAIT #1： nam='SQL*Net message from client' ela= 55266334 p1=1111838976 p2=1 p3=0
STAT #1 id=1 cnt=1 pid=0 pos=1 obj=0 op='SORT AGGREGATE '
=====================
