Shell: extract more from listener.log(分析监听日志)

最近遇到了两起数据库连接数不足的问题，通常都会预留一些会话增加的情况，但在一些特殊情况下如连接风暴(logon storm)，如果在监听中没有做rate限流，对数据库来说巨大的冲击可能会导致数据库Hang 或 ora-20 或ora-18 错误。对于Hang并伴有进程数不足的情况，AWR、ASH 都可能无法升成，甚至数据库都无法登录或做SSD 都不成功，这时候LISTENER.LOG 就成了“破案”时关键的线索。下面记录分享一些分析listener.log的一些脚本.(Note:在不同UNIX下可能稍有变化)

统计一天内每小时的session请求数

# fgrep "13-JAN-2015 " anbob_listener.log  |fgrep "establish" |awk '{print $1 " " $2}' |awk -F: '{print $1 }' |sort |uniq -c
2978 13-JAN-2015 00
2883 13-JAN-2015 01
3025 13-JAN-2015 02
2181 13-JAN-2015 03
2131 13-JAN-2015 04
2269 13-JAN-2015 05
1843 13-JAN-2015 06
2133 13-JAN-2015 07
3195 13-JAN-2015 08
4446 13-JAN-2015 09
4849 13-JAN-2015 10
4527 13-JAN-2015 11
3527 13-JAN-2015 12
3507 13-JAN-2015 13
4005 13-JAN-2015 14
4256 13-JAN-2015 15
4523 13-JAN-2015 16
4566 13-JAN-2015 17
5288 13-JAN-2015 18
4921 13-JAN-2015 19
4020 13-JAN-2015 20
3315 13-JAN-2015 21
2418 13-JAN-2015 22
2227 13-JAN-2015 23

指定的一小时每分钟session请求数

# fgrep "13-JAN-2015 11:" anbob_listener.log  |fgrep "establish" |awk '{print $1 " " $2}' |awk -F: '{print $1 ":" $2 }' |sort |uniq -c
  94 13-JAN-2015 11:00
  44 13-JAN-2015 11:01
  80 13-JAN-2015 11:02
 119 13-JAN-2015 11:03
  56 13-JAN-2015 11:04
 127 13-JAN-2015 11:05
  68 13-JAN-2015 11:06
  66 13-JAN-2015 11:07
  58 13-JAN-2015 11:08
  67 13-JAN-2015 11:09
 103 13-JAN-2015 11:10
  53 13-JAN-2015 11:11
  88 13-JAN-2015 11:12
...

指定的一小时每秒session请求数

# fgrep "13-JAN-2015 11:30" anbob_listener.log  |fgrep "establish" |awk '{print $1 " " $2}' |awk -F: '{print $1 ":" $2 ":" $3 }' |sort |uniq -c
  7 13-JAN-2015 11:30:00
  3 13-JAN-2015 11:30:01
  4 13-JAN-2015 11:30:02
  4 13-JAN-2015 11:30:03
  7 13-JAN-2015 11:30:04
  2 13-JAN-2015 11:30:05
  1 13-JAN-2015 11:30:06
  8 13-JAN-2015 11:30:08
  2 13-JAN-2015 11:30:09
  3 13-JAN-2015 11:30:10
  1 13-JAN-2015 11:30:11
...

指定的一小时内每分钟连接创建失败数

#fgrep "11-JAN-2015 11:" anbob_listener.log |awk  '{ if ( $NF != 0 ) print $0 }'|awk '{print $1 " " $2}' |awk -F: '{print $1 ":" $2 }' |sort |uniq -c
 474 11-JAN-2015 11:38
  10 11-JAN-2015 11:39

指定的一小时内每IP请求数

#fgrep "11-JAN-2015 11:" anbob_listener.log|fgrep "establish"|awk -F* '{print $3}'|awk -F= '{ print $4}'|sed -e 's/......$//g'|sort |uniq -c|sort
  1 136.142.26.139
  2 136.142.10.212
  2 136.142.21.171
  8 136.142.21.172
  13 136.142.26.133
  13 136.142.29.17
  14 136.142.29.20
  18 136.142.26.35
  23 136.142.29.29
...

指定的分钟内每IP请求数

#fgrep "11-JAN-2015 11:30" anbob_listener.log|fgrep "establish"|awk -F* '{print $3}'|awk -F= '{ print $4}'|sed -e 's/......$//g'|sort |uniq -c|sort 
  1 136.142.26.35
  1 136.142.29.149
  1 136.142.29.156
  1 136.142.29.17
  2 136.142.30.189
  3 136.142.26.133
  4 136.142.26.136
  4 136.142.29.157
  7 136.142.29.20
  9 136.142.29.22
  10 136.142.26.34
...

全天每小时每个IP请求数

fgrep "09-JAN-2015 " anbob_listener.log|fgrep "establish"|awk -F* '{print $1 " " $3}'|awk -F= '{ print $1 " "  $4}'|sed -e 's/......$//g'| awk '{print $1 " " $2 " " $4}'|cut -b-14,21- |sort |uniq -c 

   1 09-JAN-2015 01 136.142.21.172
  66 09-JAN-2015 01 136.142.21.85
  11 09-JAN-2015 01 136.142.26.131
   5 09-JAN-2015 01 136.142.26.133
  21 09-JAN-2015 01 136.142.26.136
5113 09-JAN-2015 01 136.142.26.24
  49 09-JAN-2015 01 136.142.26.34
   6 09-JAN-2015 01 136.142.29.141
  28 09-JAN-2015 01 136.142.29.148
  49 09-JAN-2015 01 136.142.29.149
  85 09-JAN-2015 01 136.142.29.150
   2 09-JAN-2015 01 136.142.29.151
   6 09-JAN-2015 01 136.142.29.156
   6 09-JAN-2015 01 136.142.29.157
   2 09-JAN-2015 01 136.142.29.162
  58 09-JAN-2015 01 136.142.29.164
   4 09-JAN-2015 01 136.142.29.17
   4 09-JAN-2015 01 136.142.29.184
 207 09-JAN-2015 01 136.142.29.192

-- file: session_rpt.sql
-- Purpose: list of session information 
-- Author:	  weejar
-- Copyright:   (c) ANBOB - http://www.anbob.com.com - All rights reserved.
prom
prom List of sessions (c)anbob.com
prom
select 'anbob.com' author,to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') current_time,instance_name from v$instance
/
col sid form 99999
col serial# form 99999
col spid form a6
col program heading 'program' for a25 trunc
col username form a15
col osuser form a10
col idle form a30 heading "Idle"
col terminal form a12
col logon_time form a18
col machine for a15 trunc
col rn for 9999
col service_name for a30
set lines 150 pages 1000
break  on report
compute sum of cnt on report
select username,status,count(*) cnt from v$session group by username,status
/
select username,machine,count(*) cnt from v$session group by username,machine
/
select status,count(*) cnt from v$session group by status
/
select inst_id,service_name,count(*) cnt from gv$session group by  inst_id,service_name order by 1,2
/
ttitle - 
   center  'displays the top 50 longest idle times'  skip 2 
select  a.*
from (
  select sid,serial#,username,status, to_char(logon_time,'dd-mm-yy hh:mi:ss') logon_time
  , floor(last_call_et/3600)||' hours '
    || floor(mod(last_call_et,3600)/60)||' mins '
    || mod(mod(last_call_et,3600),60)||' secs' idle
  , machine ,row_number() over(order by last_call_et desc ) rn
  from v$session 
  where type='USER' ) a
where rn<= 50
/
ttitle off
column event heading 'wait event' for a30 trunc
ttitle -
   center  'displays active session'  skip 2
select sid,serial#,username,event,program,MACHINE,sql_id,BLOCKING_SESSION from v$session where status='ACTIVE' and username is not null;
ttitle off

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