dbms_system是内部包，建议在官方指导下使用该包。
SQL> desc dbms_system
PROCEDURE ADD_PARAMETER_VALUE
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME VARCHAR2 IN
VALUE VARCHAR2 IN
SCOPE VARCHAR2 IN DEFAULT
SID VARCHAR2 IN DEFAULT
POSITION BINARY_INTEGER IN DEFAULT
PROCEDURE DIST_TXN_SYNC
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
INST_NUM NUMBER IN
PROCEDURE GET_ENV
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
VAR VARCHAR2 IN
VAL VARCHAR2 OUT
PROCEDURE KCFRMS
PROCEDURE KSDDDT
PROCEDURE KSDFLS
PROCEDURE KSDIND
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
LVL BINARY_INTEGER IN
PROCEDURE KSDWRT
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
DEST BINARY_INTEGER IN
TST VARCHAR2 IN
PROCEDURE READ_EV
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
IEV BINARY_INTEGER IN
OEV BINARY_INTEGER OUT
PROCEDURE REMOVE_PARAMETER_VALUE
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME VARCHAR2 IN
VALUE VARCHAR2 IN
SCOPE VARCHAR2 IN DEFAULT
SID VARCHAR2 IN DEFAULT
PROCEDURE REMOVE_PARAMETER_VALUE
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
PARNAME VARCHAR2 IN
POSITION BINARY_INTEGER IN
SCOPE VARCHAR2 IN DEFAULT
SID VARCHAR2 IN DEFAULT
PROCEDURE SET_BOOL_PARAM_IN_SESSION
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SID NUMBER IN
SERIAL# NUMBER IN
PARNAM VARCHAR2 IN
BVAL BOOLEAN IN
PROCEDURE 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
PROCEDURE SET_INT_PARAM_IN_SESSION
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SID NUMBER IN
SERIAL# NUMBER IN
PARNAM VARCHAR2 IN
INTVAL BINARY_INTEGER IN
PROCEDURE SET_SQL_TRACE_IN_SESSION
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
SID NUMBER IN
SERIAL# NUMBER IN
SQL_TRACE BOOLEAN IN
PROCEDURE WAIT_FOR_EVENT
Argument Name Type In/Out Default?
------------------------------ ----------------------- ------ --------
EVENT VARCHAR2 IN
EXTENDED_ID BINARY_INTEGER IN
TIMEOUT BINARY_INTEGER IN SQL>
#查看10046事件的追踪级别
SQL> declare lev integer;
2 begin
3 dbms_system.read_ev('10046',lev);
4 dbms_output.put_line(lev);
5 end;
6 / PL/SQL procedure successfully completed. SQL>
#对指定session开启sql_trace追踪
exec dbms_system.set_sql_trace_in_session(<sid>,<serial#>,true);---开启SQL_TRACE跟踪
exec dbms_system.set_sql_trace_in_session(<sid>,<serial#>,false);---关闭SQL_TRACE跟踪
#对指定session开启10046追踪
dbms_system.set_ev(
si IN BINARY_INTEGER, -- session id
se IN BINARY_INTEGER, -- session serial number
ev IN BINARY_INTEGER, -- event number between 10000 and 10999
le IN BINARY_INTEGER, -- event level
nm IN VARCHAR2); exec dbms_system.set_ev(<sid>,<serial#>,12,'ybb'); ----开启级别为12的跟踪
exec dbms_system.set_ev(<sid>,<serial#>,0,'ybb'); -----关闭跟踪