Using Oracle DBMS_SYSTEM.SET_EV and Oracle DBMS_SYSTEM.READ_EV
Using Oracle DBMS_SYSTEM.SET_EV and Oracle DBMS_SYSTEM.READ_EV
转自：
There are two useful procedures related to events in the DBMS_SYSTEM package. They are SET_EV, used to set a specific event, and READ_EV, used to see the current status of an event. The procedures are defined as follows:
PROCEDURE DBMS_SYSTEM.SET_EV
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SI BINARY_INTEGER IN
SE BINARY_INTEGER IN
EV BINARY_INTEGER IN
LE BINARY_INTEGER IN
NM VARCHAR2 IN
Oracle DBMS_SYSTEM.SET_EV To Set A Trace Event
The Oracle dbms_system.set_ev procedure can be used to set events too. The procedure has the following syntax:
si binary_integer, -- SID
se binary_integer, -- Serial#
ev binary_integer, -- Event code or number to set.
le binary_integer, -- Usually level to trace
nm varchar2 -- sets the Event Name. null = "context forever".
)
To enable 10046 level 12 tracing for SID 22 with a serial# of 99 we would execute the
set_ev procedure as shown here:
To disable 10046 tracing enter the following:
exec dbms_system.set_ev(22,99,10046,0,’’);
To disable tracing for another user’s session use: