@gettrcname.sql
http://www.eygle.com/archives/2007/05/script_gettrcname.html
最近有很多朋友问起《深入浅出Oracle》一书中的一个脚本gettrcname.sql。
这个脚本用于获取跟踪文件的名称的，可以用于Linux/Unix环境，已经被包含在书的脚本包中。
其内容如下：
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
/
在Linux下执行该脚本输入类似：
SQL> @gettrcname
TRACE_FILE_NAME
---------------------------------------------------------------------------------------------------
/opt/oracle/admin/eygle/udump/eygle_ora_8415.trc
如我们执行一个跟踪操作：
SQL> alter session set sql_trace=true;
Session altered.
SQL> select count(*) from dba_users;
COUNT(*)
----------
9SQL> ! head /opt/oracle/admin/eygle/udump/eygle_ora_8415.trc
/opt/oracle/admin/eygle/udump/eygle_ora_8415.trc
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning option
JServer Release 9.2.0.4.0 - Production
ORACLE_HOME = /opt/oracle/product/9.2.0
System name: Linux
Node name: jumper.hurray.com.cn
Release: 2.4.21-15.EL
Version: #1 Thu Apr 22 00:27:41 EDT 2004
Machine: i686
收录一下blue_prince提供的更简化的脚本:
SELECT a.VALUE
|| b.symbol
|| c.instance_name
|| '_ora_'
|| d.spid
|| '.trc' trace_file
FROM (SELECT VALUE
FROM v$parameter
WHERE NAME = 'user_dump_dest') a,
(SELECT SUBSTR (VALUE, -6, 1) symbol
FROM v$parameter
WHERE NAME = 'user_dump_dest') b,
(SELECT instance_name
FROM v$instance) c,
(SELECT spid
FROM v$session s, v$process p, v$mystat m
WHERE s.paddr = p.addr AND s.SID = m.SID AND m.statistic# = 0) d
/
简单解释一下，供我的读者们参考。
-The End-
