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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
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原文地址：http://www.cnblogs.com/abclife/p/5296267.html
