The usage of SQLPATH


		1. create directory
mkdir /home/oracle/scripts
2. copy script to the directory
cp gettrc.sql /home/oracle/scripts
3. edit ./.bash_profile and add the following info into it
export SQLPATH=/home/oracle/scripts:$SQLPATH
4. Explanation:
sqlplus will find script default with SQLPATH parameter. 
When you use @gettrc.sql,then the sqlplus can locate it and execute it successfully.
 
The following sql statement is the detail of gettrc.sql .
SELECT    d.VALUE
       || '/'
       || LOWER (RTRIM (i.INSTANCE, CHR (0)))
       || '_ora_'
       || p.spid
       || '.trc' trace_file_name
  FROM (SELECT p.spid
          FROM v$mystat m, v$session s, v$process p
         WHERE m.statistic# = 1 AND s.SID = m.SID AND p.addr = s.paddr) p,
       (SELECT t.INSTANCE
          FROM v$thread t, v$parameter v
         WHERE v.NAME = 'thread'
           AND (v.VALUE = 0 OR t.thread# = TO_NUMBER (v.VALUE))) i,
       (SELECT VALUE
          FROM v$parameter
         WHERE NAME = 'user_dump_dest') d;

补充：综合编程 , 其他综合 ,