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  • 在Oracle中跟踪某几个用户的SQL

    在Oracle中做SQL跟踪,估计大部分都会用sqlplus中的autotrace或者设置10046跟踪。但是,如果是调试某个应用系统的话,特别是打开了连接池的系统,靠以上两种方法基本上就歇菜了。还是SQL Server的SQL Server Profiler好啊。

    最近在看冯大辉翻译的

    create role trace_10046_role; 
    
    CREATE OR REPLACE TRIGGER SYS.set_10046_trace_on_logon
    AFTER LOGON ON DATABASE
    BEGIN
      if ( dbms_session.is_role_enabled('trace_10046_role') and user not in ('SYS','SYSTEM')  ) then
        EXECUTE IMMEDIATE 'alter session set statistics_level=ALL';
        EXECUTE IMMEDIATE 'alter session set max_dump_file_size=UNLIMITED';
        EXECUTE IMMEDIATE 'alter session set tracefile_identifier='''||user||'_10046''';
        EXECUTE IMMEDIATE 'alter session set events ''10046 trace name context forever, level 12''';
      end if; 
    END set_10046_trace_on_logon;

    启用和禁用对系统进行做10046跟踪SQL:

    SQL> show user;
    USER is "SYS"
    SQL> grant trace_10046_role to cms_text;
    SQL> select * from dba_ROLE_PRIVS where granted_role='TRACE_10046_ROLE';
    
    GRANTEE                        GRANTED_ROLE                   ADM DEF
    ------------------------------ ------------------------------ --- ---
    SYS                            TRACE_10046_ROLE               YES YES
    CMS_TEXT                       TRACE_10046_ROLE               NO  YES
    Grant succeeded.
    SQL> revoke trace_10046_role from cms_text; 
    SQL> select * from dba_ROLE_PRIVS where granted_role='TRACE_10046_ROLE';
    
    GRANTEE                        GRANTED_ROLE                   ADM DEF
    ------------------------------ ------------------------------ --- ---
    SYS                            TRACE_10046_ROLE               YES YES

    其实就是将 trace_10046_role grant/revoke 给相应的用户。

    当具有 trace_10046_role 角色的用户登录后在udump下就会出现相应的trc文件:

    [oracle@test-server udump]$ pwd
    /u01/app/admin/ora8i/udump
    [oracle@test-server udump]$ ls
    ora8i_ora_8259_CMS_TEXT_10046.trc
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  • 原文地址:https://www.cnblogs.com/killkill/p/1781315.html
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