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  • dbms_monitor开启/关闭会话跟踪

    从10g开始,可以使用dbms_monitor开启/关闭会话跟踪。

    sql> desc dbms_monitor
    procedure client_id_stat_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     client_id                      varchar2                in
    procedure client_id_stat_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     client_id                      varchar2                in
    procedure client_id_trace_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     client_id                      varchar2                in
    procedure client_id_trace_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     client_id                      varchar2                in
     waits                          boolean                 in     default
     binds                          boolean                 in     default
     plan_stat                      varchar2                in     default
    procedure database_trace_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     instance_name                  varchar2                in     default
    procedure database_trace_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     waits                          boolean                 in     default
     binds                          boolean                 in     default
     instance_name                  varchar2                in     default
     plan_stat                      varchar2                in     default
    procedure serv_mod_act_stat_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     service_name                   varchar2                in
     module_name                    varchar2                in
     action_name                    varchar2                in     default
    procedure serv_mod_act_stat_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     service_name                   varchar2                in
     module_name                    varchar2                in
     action_name                    varchar2                in     default
    procedure serv_mod_act_trace_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     service_name                   varchar2                in
     module_name                    varchar2                in     default
     action_name                    varchar2                in     default
     instance_name                  varchar2                in     default
    procedure serv_mod_act_trace_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     service_name                   varchar2                in
     module_name                    varchar2                in     default
     action_name                    varchar2                in     default
     waits                          boolean                 in     default
     binds                          boolean                 in     default
     instance_name                  varchar2                in     default
     plan_stat                      varchar2                in     default
    procedure session_trace_disable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     session_id                     binary_integer          in     default
     serial_num                     binary_integer          in     default
    procedure session_trace_enable
     argument name                  type                    in/out default?
     ------------------------------ ----------------------- ------ --------
     session_id                     binary_integer          in     default
     serial_num                     binary_integer          in     default
     waits                          boolean                 in     default
     binds                          boolean                 in     default
     plan_stat                      varchar2                in     default
    
    sql> 
    

    1.会话级设置跟踪

    #找到会话sid
    select sid,serial#,username from v$session;
    
    #开启跟踪(备注:四个参数都是可选参数,不带任何参数跟踪的是当前会话,跟踪结束后要关闭跟踪)
    exec dbms_monitor.session_trace_enable(session_id=>190,serial_num=>8351,waits=>true,binds=>true);
    
    #检查会话是否被跟踪
    select sql_trace,sql_trace_waits,sql_trace_binds from v$session where sid=190;
    
    #关闭跟踪
    exec dbms_monitor.session_trace_disable(session_id=>190,serial_num=>8351);
    

      

    2.根据客户端标识设置会话跟踪

    #设置客户端标识符
    SQL> exec dbms_session.set_identifier('abce_id');
    
    SQL> select sid,serial#,client_identifier from v$session where client_identifier is not null;
    
           SID    SERIAL# CLIENT_IDENTIFIER
    ---------- ---------- ----------------------------------------
           190       8355 abce_id
    
    SQL>  
    
    #客户端标识符设置跟踪
    SQL> exec dbms_monitor.client_id_trace_enable(client_id=>'abce_id',waits=>true,binds=>false);
    SQL> select primary_id as client_id,waits,binds from dba_enabled_traces where trace_type='CLIENT_ID';
    
    CLIENT_ID                                                        WAITS BINDS
    ---------------------------------------------------------------- ----- -----
    abce_id                                                          TRUE  FALSE
    
    SQL> 
    #关闭跟踪
    SQL> exec dbms_monitor.client_id_trace_disable(client_id=>'abce_id');
    

    3.模块级、数据库级监控(略,具体查看上面的定义)

    4.跟踪视图
    查看dba_enabled_traces和dba_enabled_aggregations视图,可以看到启用的跟踪和收集的统计信息。可以使用这些视图确保已经禁用的所有跟踪选项。

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  • 原文地址:https://www.cnblogs.com/abclife/p/6757889.html
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