mystat脚本获得oracle统计结果

mystat.sql和mystat2.sql可以根据v$mystat视图中的信息得出执行各个语句的各项统计结果

mystat.sql只是获得统计结果的开始值:

   
   
   
   

    
    
    
    
 
     set echo off 
    
    
    
    
    
 
     set verify off 
    
    
    
    
    
 
     column value new_val V 
    
    
    
    
    
 
     define S="&1" 
    
    
    
    
    
 
       
    
    
    
    
    
 
     set autotrace off 
    
    
    
    
    
 
     select a.name,b.value from v$statname a,v$mystat b 
    
    
    
    
    
 
     where a.statistic#=b.statistic# 
    
    
    
    
    
 
     and lower(a.name) like '%'||lower('&S')||'%' 
    
    
    
    
    
 
     / 
    
    
    
    
    
 
     set echo on; 
    
   
   
   
   

mystat2.sql用于报告差值:

   
   
   
   

    
    
    
    
 
     set echo off 
    
    
    
    
    
 
     set verify off 
    
    
    
    
    
 
     select a.name,b.value V,to_char(b.value-&V,'999,999,999,999') diff 
    
    
    
    
    
 
     from v$statname a,v$mystat b 
    
    
    
    
    
 
     where a.statistic#=b.statistic# 
    
    
    
    
    
 
     and lower(a.name) like '%'||lower('&S')||'%' 
    
    
    
    
    
 
     / 
    
    
    
    
    
 
     set echo on 
    
   
   
   
   

例如要查看某个update产生的redo数,可以使用一下命令:

    
    
    
    

     
     
     
     
 
      SQL> @mystat.sql "redo size" 
     
     
     
     
     
 
      SQL> set echo off 
     
     
     
     
     
 
        
     
     
     
     
     
 
      NAME VALUE 
     
     
     
     
     
 
      ---------------------------------------------------------------- ---------- 
     
     
     
     
     
 
      redo size 4272908 
     
     
     
     
     
 
      redo size for lost write detection 0 
     
     
     
     
     
 
      redo size for direct writes 8228 
     
     
     
     
     
 
        
     
     
     
     
     
 
      SQL> update tobj set created=sysdate; 
     
     
     
     
     
 
        
     
     
     
     
     
 
      14921 rows updated. 
     
     
     
     
     
 
        
     
     
     
     
     
 
      SQL> commit; 
     
     
     
     
     
 
        
     
     
     
     
     
 
      Commit complete. 
     
     
     
     
     
 
        
     
     
     
     
     
 
      SQL> @mystat2 
     
     
     
     
     
 
      SQL> set echo off 
     
     
     
     
     
 
        
     
     
     
     
     
 
      NAME V DIFF 
     
     
     
     
     
 
      ---------------------------------------------------------------- ---------- ---------------- 
     
     
     
     
     
 
      redo size 8548796 8,540,568 
     
     
     
     
     
 
      redo size for lost write detection 0 -8,228 
     
     
     
     
     
 
      redo size for direct writes 16456 8,228