ORACLE TRACE 10046事件常见的几种方法

    下面是10046事件的几个等级分别表示什么意思

Level 0 Tracing is disabled. This is the same as setting SQL_TRACE = FALSE.

Level 1 Standard SQL trace information (SQL_TRACE = TRUE). This is the default level.

Level 4 SQL trace information plus bind variable values.

Level 8 SQL trace information plus wait event information.

Level 12 SQL trace information, wait event information, and bind variable values.

   下面是常见的几种方法

一、trace当前进程

 

1，event方法
alter session set timed_statistics = true;
alter session set max_dump_file_size = unlimited;
alter session set events '10046 trace name context forever, level 8';
alter session set events '10046 trace name context off';

2，dbms_support方法
alter session set timed_statistics = true;
alter session set max_dump_file_size = unlimited;
exec sys.dbms_support.start_trace;
--To include Bind variable values, Wait Event data with SQL trace
exec sys.dbms_support.start_trace(waits => TRUE, binds=> TRUE)
exec sys.dbms_support.stop_trace;

3，oradebug 方法
alter system set timed_statistics = true;
SQL> oradebug setmypid
Statement processed.
SQL> oradebug unlimit;
Statement processed.
SQL> oradebug event 10046 trace name context forever,level 8
Statement processed.

二，trace其它进程

  在trace其它进程前，先修改下面两个参数的值 -- Set TIME_STATISTICS to TRUE for SID 10, Serial# 118
exec sys.dbms_system.set_bool_param_in_session(-
sid => 10, -
serial# => 118, -
parnam => 'TIMED_STATISTICS',-
bval => true);
-- Set MAX_DUMP_FILE_SIZE to 2147483647
-- for SID 10, Serial# 118
exec sys.dbms_system.set_int_param_in_session(-
sid => 10,-
serial# => 118,-
parnam => 'MAX_DUMP_FILE_SIZE',-
intval => 2147483647);


1，使用dbms_support方法

-- Enable ‘level 12’ trace in session 10 with serial# 118
exec dbms_support.start_trace_in_session(-
sid => 10,-
serial => 118,-
waits => true,-
binds => true);
-- Let the session execute SQL script or -- program for some amount of time
-- To turn off the tracing:
exec dbms_support.stop_trace_in_session(-
sid => 10, -
serial => 118);

2，使用DBMS_SYSTEM
-- Enable trace at level 8 for session 10 with serial# 118
exec dbms_system.set_ev( 10, 118, 10046, 8, '');
-- Let the session execute SQL script or-- program for some amount of time
-- To turn off the tracing:
exec dbms_system.set_ev( 10, 118, 10046, 0, '');

3，使用oradebug工具
在使用oradebug工具前，我们得先查找到sess在操作系统上面的进程号，可以使用下面的SQL来查询
select s.username,p.spid os_process_id,p.pid oracle_process_id from   v$session s, v$process p where  s.paddr = p.addr and s.sid=&sid;

查看进程号后，使用下面的命令
alter system set timed_statistics = true;
oradebug setospid 6509;
-- 6509 is the OS process id for the session
oradebug unlimit;
oradebug event 10046 trace name context forever, level 8;
-- Let the session execute SQL script
-- or program for some amount of time
-- To turn off the tracing:
oradebug event 10046 trace name context off;
4，使用dbms_monitor
exec dbms_monitor.session_trace_enable( -
session_id => 10,-
serial_num => 118, -
waits => true, -
binds => true);
-- Let the session execute SQL script or -- program for some amount of time
-- To turn off the tracing:
exec dbms_monitor.session_trace_disable( -
session_id => 10, -
serial_num => 118);