看懂oracle trc文件,oracle 的 debug 工具 和 分析 trc 文件工具 ass.awk
oracle的dump工具和分析trc文件工具ass.awk
之前介绍了oracle的一个hang住时的一个分析工具hanganalyze，这里再引入另外的一个工具，分析系统进程和单个进程的工具
1、在能登录数据库时，可以使用如下语句：
跟踪进程对象的debug的方法：
可以使用下面方法产生系统状态跟踪文件：
process state dumps ==>一个进程的所有对象状态,如果确认哪个进程有问题,就用该方法
process state dumps:
1.ALTER SESSION SET EVENTS 'IMMEDIATE TRACE NAME PROCESSSTATE LEVEL 10'或者event = '604 trace name processstate,level 10'(INIT.ORA entry);
2.oradebug setospid进程ID
3.oradebug dump processstate 10;
实验：
Sid 300：UPDATEtxt_test aSETa.FLOWNO='b'WHEREa.FLOWNO='a';
Sid 244：UPDATEtxt_test aSETa.FLOWNO='b'WHEREa.FLOWNO='a';
这样，sid 300 update后不commit，那么，sid 244就会卡在那边，这时，我去debug sid 244那个进程id 17541
但是，当我使用ass.awk去跟踪文件的时候，却发现，没有内容出来：
----------------------------------------------------------------------------
[oracle@local ass]$ awk -f ass.awk$ORACLE_HOME/zxin/udump/zxin_ora_17541.trc
Ass.Awk Version 1.0.9 - Processing $ORACLE_HOME/zxin/udump/zxin_ora_17541.trc
2451 Lines Processed.
------------------------------------------------------------------------------
system state dumps ==>整个系统的所有进程中的所有对象状态
system state dumps:
1.ALTER SESSION SET EVENTS 'IMMEDIATE TRACE NAME SYSTEMSTATE LEVEL 10'或者event = '604 trace name systemstate,level 10'(INIT.ORA entry)
2、当系统hang住后，如果连sqlplus也不能登录数据库，那么可以使用如下工具
在LINUX下用gdb，在AIX下用dbx，那么在HP-UX下呢，可以用HP的wdb(可以到HP WDB查看HP WDB的详细信息和下载最新的版本。在solaris上，也会有dbx或gdb(各个平台有多种不同的debugger，其他还有adb,mdb等等)。
这里继续上马的例子，当我在linux上使用sid 300的pid的时候，就可以使用ass.awk了
[oracle@localhost ass]$gdb $ORACLE_HOME/bin/oracle
GNU gdb 6.6
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.Type "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=i686-pc-linux"...
Using host libthread_db library "/lib/libthread_db.so.1".
Attaching to program: /home/oracle/oracle92/bin/oracle, process 22655
Readingsymbols from /etc/libcwait.so...done.
Loaded symbols for /etc/libcwait.so
Readingsymbols from /home/oracle/oracle92/lib/libodm9.so...done.
Loaded symbols for /home/oracle/oracle92/lib/libodm9.so
Readingsymbols from /home/oracle/oracle92/lib/libskgxp9.so...done.
Loaded symbols for /home/oracle/oracle92/lib/libskgxp9.so
Readingsymbols from /home/oracle/oracle92/lib/libskgxn9.so...done.
Loaded symbols for /home/oracle/oracle92/lib/libskgxn9.so
Readingsymbols from /home/oracle/oracle92/lib/libjox9.so...done.
Loaded symbols for /home/oracle/oracle92/lib/libjox9.so
Readingsymbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Readingsymbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Readingsymbols from /lib/libpthread.so.0...done.
Loaded symbols for /lib/libpthread.so.0
Readingsymbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Readingsymbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Readingsymbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Readingsymbols from /lib/libnss_files.so.2...done.
Loaded symbols for /lib/libnss_files.so.2
0xffffe410 in __kernel_vsyscall ()
(gdb)print ksudss(10)
$1 = 181834684
(gdb)detach
Detaching from program: /home/oracle/oracle92/bin/oracle, process 22655
(gdb)quit
这时，使用ass.awk来跟踪这个trc文件
[oracle@localhost ass]$ awk -f ass109.awk/home/oracle/zxindbf/admin/zxin/udump/zxin_ora_22655.trc
Starting Systemstate 1
..............................................................................
...............................................................................
...............................................................................
...........
Ass.Awk Version 1.0.9 - Processing /home/oracle/zxindbf/admin/zxin/udump/zxin_ora_22655.trc
SystemState1
~~~~~~~~~~~~~~~~
1:
2:waiting for 'pmon timer'seq=43334
3:waiting for 'rdbms ipc message'seq=20506
4:waiting for 'rdbms ipc message'seq=56103
5:waiting for 'rdbms ipc message'seq=51900
6:waiting for 'rdbms ipc message'seq=37622
7:waiting for 'rdbms ipc message'seq=37381
8:waiting for 'rdbms ipc message'seq=26290
9:waiting for 'rdbms ipc message'seq=26699
10: waiting for 'rdbms ipc message'seq=6453
11: waiting for 'rdbms ipc message'seq=17840
12: waiting for 'rdbms ipc message'seq=43737
13: waiting for 'smon timer'seq=10561
14: waiting for 'rdbms ipc message'seq=726
15: waiting for 'rdbms ipc message'seq=55882
16: waiting for 'wakeup time manager'seq=15573
17: waiting for 'SQL*Net message from client' seq=272
18: waiting for 'jobq slave wait'seq=2
19: waiting for 'jobq slave wait'seq=2
20: waiting for 'jobq slave wait'seq=2
21: waiting for 'SQL*Net message from client' seq=282
22: waiting for 'SQL*Net message from client' seq=2456
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
225:waiting for 'enqueue'[Enqueue TX-00020016-000FA083] seq=49
Cmd: Update
226:waiting for 'SQL*Net message from client' seq=117
Blockers
~~~~~~~~
Above is a list of all the processes. If they are waiting for a resource
then it will be given in square brackets. Below is a summary of the
waited upon resources, together with the holder of that resource.
Notes:
~~~~~
o A process id of '???' implies that the holder was not found in the
systemstate.
Resource Holder State
Enqueue TX-00020016-000FA083224: waiting for 'SQL*Net message from client'
Object Names
~~~~~~~~~~~~
Enqueue TX-00020016-000FA083
137909 Lines Processed.
这里，可以很清楚地看到，这个进程，是由于什么原因卡在那边。
3、ass.awk的用法
先上传下ass.awk的shell脚本
用的时候，在当前目录下生成那个shell脚本(ass.awk)，然后，使用如下命令，就会生成了
(n)awk -f ass.awk$ORACLE_BASE/zxin/udump/zxin_ora_22655.trc
参考网址：