Oracle 查看trace文件

小鱼儿 2022-08-18 14:20 176阅读 0赞

1.获得当前trace文件生成路径

SQL> select tracefile from v$process where addr in (select paddr from v$session where sid in (select sid from v$mystat));

TRACEFILE

f:\Oracle\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_1160.trc

2.开启当前session的trace

SQL> alter session set sql_trace=true;
    
    SQL> select count(*) from t1;

3.转换trc文件内容为可读的输出结果

C:\Documents and Settings\Administrator>tkprof f:\oracle\administrator\diag\rdbm
    s\orcl\orcl\trace\orcl_ora_1160.trc output=c:\aa.txt
    
    TKPROF: Release 11.2.0.1.0 - Development on 星期六 10月 6 23:51:07 2012
    Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

4.打开c:\\aa.txt, 就会看到关于SQL语句 ‘ select count(\*) from t1;’ 的执行计划

SQL ID: 5bc0v4my7dvr5 
    Plan Hash: 3724264953 
    select count(*) from t1 
    
    call     count       cpu    elapsed       disk      query    current        rows 
    ------- ------  -------- ---------- ---------- ---------- ----------  ----------  
    Parse        1      0.00       0.04          0          1          0           0 
    Execute      1      0.00       0.00          0          0          0           0 
    Fetch        2      0.03       0.01          0       1070          0           1 
    ------- ------  -------- ---------- ---------- ---------- ----------  ----------  
    total        4      0.03       0.06          0       1071          0           1 
    
    Misses in library cache during parse: 1 
    Optimizer mode: ALL_ROWS 
    Parsing user id: 91   
    
    Rows     Row Source Operation 
    -------  ---------------------------------------------------  
          1  SORT AGGREGATE (cr=1070 pr=0 pw=0 time=0 us) 
      72597   TABLE ACCESS FULL T1 (cr=1070 pr=0 pw=0 time=172543 us cost=298 size=0 card=66014)

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