我们常常有需要从SHELL里面传入参数,到Sqlplus里面执行命令。
  比如我跑一个Top进程,看到某个进程非常消耗资源。
  Code:
  
  oracle@main-db1$top
   
  last pid: 4327; load averages: 1.81, 2.13, 2.11                                  
  536 processes: 534 sleeping, 2 on cpu
  CPU states:   % idle,   % user,   % kernel,   % iowait,   % swap
  Memory: 12G real, 373M free, 6853M swap in use, 7235M swap free
   
    PID USERNAME THR PRI NICE SIZE  RES STATE  TIME  CPU COMMAND
   26240 oracle   1 59 -20 5592M 5569M sleep 134:10 0.71% oracle
    6219 oracle   1 59 -20 5593M 5569M sleep  36:51 0.63% oracle
    5717 oracle   2 59 -20 5595M 5572M sleep  35.6H 0.48% oracle
   26314 oracle   1 59 -20 5593M 5572M sleep  27.4H 0.34% oracle
    5553 oracle   1 59 -20 5592M 5570M sleep 910:48 0.33% oracle
   22514 oracle   1 59 -20 5592M 5569M sleep 329:32 0.31% oracle
    6229 oracle   1 59 -20 5592M 5568M sleep  16:00 0.28% oracle
   27995 oracle   1 59 -20 5593M 5569M sleep  7:46 0.28% oracle
   17843 oracle   2 59 -20 5595M 5572M sleep 594:58 0.27% oracle
  我想很快看到这个进程是什么,手工进入SQLPLUS,根据v$session, v$process一个一个join,非常麻烦。
   
  最好能够从shell 里面直接输入spid,马上让我看到这个进程是什么,在干什么。
   
  下面是我写的一个简单例子,
  
   Code: [Copy to clipboard] 
  
  sqlplus /nolog <  connect / as sysdba
  col machine format a30
  col program format a40
  set line 200
  select sid,serial# ,username,osuser,machine,program,process,to_char(logon_time,'yyyy/mm/dd hh24:mi:ss') 
       from v\$session where paddr in
       ( select addr from v\$process where spid in($1));
        
   select sql_text from v\$sqltext_with_newlines
           where hash_value in
           (select SQL_HASH_VALUE from v\$session where
            paddr in (select addr from v\$process where spid=$1)
            )
            order by piece;
   
  exit;
  EOF
  有了这个简单例子之后,我可以很方便,及时的看到这个进程在干什么:
  
   Code: [Copy to clipboard] 
  
  oracle@main-db1$./whoisit.sh 26240
   
  SQL*Plus: Release 8.1.7.0.0 - Production on Sat Dec 14 15:19:55 2002
   
  (c) Copyright 2000 Oracle Corporation. All rights reserved.
   
  15:19:55 SQL> Connected.
  15:19:55 SQL> 15:19:55 SQL> 15:19:55 SQL> 15:19:55 SQL> 15:19:55  2 15:19:55  3 
      SID  SERIAL# USERNAME            OSUSER             MACHINE            PROGRAM                 PROCESS  TO_CHAR(LOGON_TIME,
  ---------- ---------- ------------------------------ ------------------------------ ------------------------------ ---------------------------------------- --------- -------------------
      404   62253 APP1            app1            mid1               ? @mid1 (TNS V1-V3)         6095   2002/12/13 16:00:40
   
  1 row selected.
   
  Elapsed: 00:00:00.02
  15:19:55 SQL> 15:19:55 SQL> 15:19:55  2 15:19:55  3 15:19:55  4 15:19:55  5 15:19:55  6 
  SQL_TEXT
  ----------------------------------------------------------------
  SELECT *  FROM RC_REQUESTCCPAYMENT WHERE UL_LOGINNAME = :b1 A
  ND RC_POSTDATE >= TO_DATE(:b2,'YYYYMM') AND RC_POSTDATE < ADD_M
  ONTHS(TO_DATE(:b2,'YYYYMM'),1) AND RC_STATUS < 3000 ORDER BY RC
  _REQUESTCCPAYMENTID DESC
   
  4 rows selected.
   
  Elapsed: 00:00:00.01
  15:19:55 SQL> 15:19:55 SQL> Disconnected from Oracle8i Enterprise Edition Release 8.1.7.2.0 - 64bit Production
  With the Partitioning option
  JServer Release 8.1.7.2.0 - 64bit Production
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