Swingbench简单使用

发表于 2013 年 3 月 27 日 由 惜分飞

Swingbench是一款很不错的oracle压力测试工具,使用比较简单，而且很效果比较明显，可以满足在一些简单的测试案例中的需求，这里大概的写了主要的Swingbench测试过程中的一些注意事项
1.相关网站
Swingbench
2.上传服务器并解压

--整体目录
[oracle@localhost swingbench]$ ll
total 484
drwxr-xr-x. 3 oracle dba   4096 Mar 26 15:54 bin
drwxr-xr-x. 2 oracle dba   4096 Mar 26 15:48 configs
drwxr-xr-x. 2 oracle dba   4096 Jun 11  2010 launcher
drwxr-xr-x. 3 oracle dba   4096 Dec  9  2011 lib
drwxr-xr-x. 2 oracle dba   4096 Mar  3  2010 log
-rwx------. 1 oracle dba   1768 Feb 15  2011 README.txt
drwxr-xr-x. 3 oracle dba   4096 Dec  9  2011 source
drwxr-xr-x. 2 oracle dba   4096 Mar 26 15:38 sql
-rw-r--r--. 1 oracle dba    848 Mar 26 11:02 swingbench.env
-rw-r--r--. 1 oracle dba 454110 Feb 15  2011 swingbenchFAQ.pdf
drwx------. 3 oracle dba   4096 Dec  8  2011 winbin

--动态库
[oracle@localhost lib]$ ll
total 14896
-rw-r--r--. 1 oracle dba   999966 Dec  9  2011 ant.jar
drwxr-xr-x. 2 oracle dba     4096 Dec  9  2011 launcher
-rw-r--r--. 1 oracle dba  2152849 Dec  9  2011 ojdbc6.jar
-rw-r--r--. 1 oracle dba    70569 Dec  9  2011 ons.jar
-rw-r--r--. 1 oracle dba    20349 Dec  9  2011 simplefan.jar
-rw-r--r--. 1 oracle dba 11512178 Dec  9  2011 swingbench.jar
-rw-r--r--. 1 oracle dba   479413 Dec  9  2011 ucp.jar

--相关执行文件和初始化*.xml文件等
[oracle@localhost bin]$ ll
total 192
-rwxr-xr-x. 1 oracle dba    106 Nov 17  2010 bmcompare
-rwx------. 1 oracle dba   4456 Apr 19  2010 ccconfig.xml
-rwxr-xr-x. 1 oracle dba    120 Nov 17  2010 ccwizard
-rwx------. 1 oracle dba   4086 Jul 27  2010 ccwizard.xml
-rwxr-xr-x. 1 oracle dba    106 Nov 17  2010 charbench
-rwxr-xr-x. 1 oracle dba    118 Nov 17  2010 clusteroverview
-rw-r--r--. 1 oracle dba   1740 Jul 27  2010 clusteroverview.xml
-rwxr-xr-x. 1 oracle dba    110 Nov 17  2010 coordinator
drwxr-xr-x. 2 oracle dba   4096 Dec  8  2011 data
-rw-r--r--. 1 oracle dba 113698 Nov  2  2011 debug.log
-rwxr-xr-x. 1 oracle dba    106 Nov 17  2010 minibench
-rwxr-xr-x. 1 oracle dba    120 Nov 17  2010 oewizard
-rwx------. 1 oracle dba   3279 Jul 27  2010 oewizard.xml
-rw-r--r--. 1 oracle dba   2790 Feb 15  2011 results.xml
-rwxr-xr-x. 1 oracle dba    128 Nov 17  2010 shwizard
-rwx------. 1 oracle dba   2499 Aug 28  2010 shwizard.xml
-rwxr-xr-x. 1 oracle dba    108 Nov 17  2010 swingbench
-rwx------. 1 oracle dba   5766 Mar 26 15:29 swingconfig.xml
-rw-r--r--. 1 oracle dba    241 Mar 26 11:56 wizardlog.xml

--执行相关*.xml配置文件
[oracle@localhost configs]$ ll
total 36
-rwx------. 1 oracle dba 4714 Mar 27 10:02 ccconfig.xml
-rwx------. 1 oracle dba 3950 Nov  8  2011 oeconfig.xml
-rwx------. 1 oracle dba 3774 Nov  8  2011 shconfig.xml
-rwx------. 1 oracle dba 5009 Mar 27 10:15 soeconfig.xml
-rwx------. 1 oracle dba 3198 Nov  8  2011 spconfig.xml
-rwx------. 1 oracle dba 3074 Mar 23  2010 stresstest.xml

3.编辑环境变量

--自己编辑生成，然后使用.执行
vi swingbench.env
#!/bin/bash
--note:官方要求java 1.6，oracle 11g自带1.5可以执行
export JAVAHOME=/data/oracle/product/11.2.0/dbhome_1/jdk
export SWINGHOME=/swingbench 
export ORACLE_HOME=/data/oracle/product/11.2.0/dbhome_1
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/lib:$SWINGHOME/lib
export CLASSPATH=$JAVAHOME/lib/rt.jar:$JAVAHOME/lib/tools.jar:${SWINGHOME}/lib/swingbench.jar
export CLASSPATH=$CALSSPATH:${SWINGHOME}/lib/ojdbc6.jar:${SWINGHOME}/lib/ant.jar:ucp.jar
export CLASSPATH=$CLASSPATH:$ORACLE_HOME/jdbc/lib/ojdbc14.jar:$ORACLE_HOME/opmn/lib/ons.jar
export CLASSPATH=$CLASSPATH:$ORACLE_HOME/jdbc/lib/ojdbc5.jar

4.初始化数据

--初始化sh数据
[oracle@localhost bin]$ ll sh*
-rwxr-xr-x. 1 oracle dba  128 Nov 17  2010 shwizard
-rwx------. 1 oracle dba 2499 Aug 28  2010 shwizard.xml

--初始化soe数据
[oracle@localhost bin]$ ll oe*
-rwxr-xr-x. 1 oracle dba  120 Nov 17  2010 oewizard
-rwx------. 1 oracle dba 3279 Jul 27  2010 oewizard.xml

--初始化cc数据
[oracle@localhost bin]$ ll ccwizard*
-rwxr-xr-x. 1 oracle dba  120 Nov 17  2010 ccwizard
-rwx------. 1 oracle dba 4086 Jul 27  2010 ccwizard.xml

5.执行压力测试

--执行sh
[oracle@localhost bin]$ ./swingbench -c /swingbench/configs/shconfig.xml

--执行soe
[oracle@localhost bin]$ ./swingbench -c /swingbench/configs/soeconfig.xml

--执行cc
[oracle@localhost bin]$ ./swingbench -c /swingbench/configs/ccconfig.xml

6.测试结果
为了能够收集系统的io和cpu,需要登录系统(configuration–>connect pooling–>distributed controls)

发表在 Oracle | 一条评论

非归档异常数据库rman备份

发表于 2013 年 3 月 16 日 由 惜分飞

最近在数据库恢复中遇到一个案例：xx单位1.5T oracle 10.2.0.4(redhat 4.5)，因为异常关闭操作系统，导致数据库不能启动，需要帮忙恢复。该数据库为非归档模式，使用裸设备,一个裸设备文件大小(35G)，数据库文件大小4-30G都有，现在客户要求我们不能对现有环境进行任何操作，需要克隆一份数据库出来，然后在克隆的库上进行数据库恢复操作.数据库环境的克隆最好的方法就是使用rman来完成,但是该数据库为非归档模式,无法直接使用rman进行备份操作.最后采取dd的方式处理(需要注意dd文件大小为block_size*(v$datafile.blocks+1)+v$datafile.offset).因为不能使用rman的一条命令处理,心里一直不舒服,在家里实验,终于还是确定可以通过重建控制文件的方法来欺骗rman是归档模式,来实现rman完成类似工作.
数据库非非归档模式

SQL> select * from v$version;

BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - Production
PL/SQL Release 11.2.0.3.0 - Production
CORE    11.2.0.3.0      Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production

SQL> archive log list;
Database log mode              No Archive Mode
Automatic archival             Disabled
Archive destination            /u01/oracle/oradata/ora11g/archivelog
Oldest online log sequence     7
Current log sequence           9

非归档模式尝试rman 备份

RMAN> backup database format '/u01/oracle/oradata/orall1g_%U';

Starting backup at 22-JAN-13
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=10 device type=DISK
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 01/22/2013 16:10:49
ORA-19602: cannot backup or copy active file in NOARCHIVELOG mode
continuing other job steps, job failed will not be re-run
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
including current control file in backup set
including current SPFILE in backup set
channel ORA_DISK_1: starting piece 1 at 22-JAN-13
channel ORA_DISK_1: finished piece 1 at 22-JAN-13
piece handle=/u01/oracle/oradata/orall1g_13o02k8a_1_1 tag=TAG20130122T161048 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:03
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================

rman的backup or copy命令不能在非归档模式下执行

尝试修改数据库为归档模式

SQL> alter database archivelog;
alter database archivelog
*
ERROR at line 1:
ORA-00265: instance recovery required, cannot set ARCHIVELOG mode

数据库非正常关闭,不能修改归档模式

重建控制文件

SQL> alter database backup controlfile to trace as '/tmp/ctl';

Database altered.

SQL> shutdown immediate
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.

--备份当前控制文件(保留控制文件现场)

SQL> STARTUP NOMOUNT
ORACLE instance started.

Total System Global Area  313860096 bytes
Fixed Size                  1344652 bytes
Variable Size             285215604 bytes
Database Buffers           20971520 bytes
Redo Buffers                6328320 bytes
SQL> CREATE CONTROLFILE REUSE DATABASE "ORA11G" NORESETLOGS  ARCHIVELOG
  2      MAXLOGFILES 16
  3      MAXLOGMEMBERS 3
  4      MAXDATAFILES 100
  5      MAXINSTANCES 8
  6      MAXLOGHISTORY 292
  7  LOGFILE
  8    GROUP 1 '/u01/oracle/oradata/ora11g/redo01.log'  SIZE 50M BLOCKSIZE 512,
  9    GROUP 2 '/u01/oracle/oradata/ora11g/redo02.log'  SIZE 50M BLOCKSIZE 512,
 10    GROUP 3 '/u01/oracle/oradata/ora11g/redo03.log'  SIZE 50M BLOCKSIZE 512
 11  DATAFILE
 12    '/u01/oracle/oradata/ora11g/system01.dbf',
 13    '/u01/oracle/oradata/ora11g/sysaux01.dbf',
 14    '/u01/oracle/oradata/ora11g/users01.dbf',
 15    '/u01/oracle/oradata/ora11g/dbfs01.dbf',
 16    '/u01/oracle/oradata/ora11g/tts_xifenfei02.dbf',
 17    '/u01/oracle/oradata/ora11g/tts_xifenfei01.dbf',
 18    '/u01/oracle/oradata/ora11g/system02.dbf',
 19    '/u01/oracle/oradata/ora11g/czum01.dbf',
 20    '/u01/oracle/oradata/ora11g/undotbs02.dbf'
 21  CHARACTER SET ZHS16GBK
 22  ;

Control file created.

数据库已经变为归档模式

SQL> archive log list;
Database log mode              Archive Mode
Automatic archival             Disabled
Archive destination            /u01/oracle/oradata/ora11g/archivelog
Oldest online log sequence     7
Next log sequence to archive   7
Current log sequence           9

归档模式尝试rman备份

RMAN> backup datafile 1 format '/u01/oracle/oradata/system01_%U';

Starting backup at 22-JAN-13
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00001 name=/u01/oracle/oradata/ora11g/system01.dbf
channel ORA_DISK_1: starting piece 1 at 22-JAN-13
channel ORA_DISK_1: finished piece 1 at 22-JAN-13
piece handle=/u01/oracle/oradata/system01_02o02kl7_1_1 tag=TAG20130122T161742 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:01:15
Finished backup at 22-JAN-13

RMAN-06497: WARNING: control file is not current, control file AUTOBACKUP skipped

因为现在的控制文件是新创建的，不能算是数据库的当前控制文件,所以未被rman自动备份(很好理解，重建控制文件后，我们做恢复都要使用using backup controlfile命令)

总结说明
1.数据库为非归档模式,不能使用rman的backup和copy命令来备份
2.因为数据库为非正常关闭不能直接修改为归档模式
3.通过重建控制文件修改数据库(注意备份)为归档模式实现rman正常备份
4.当rman备份好之后，使用原先控制文件替换现在控制文件

发表在 rman备份/恢复 | 4 条评论

bbed模拟提交事务二之屏蔽smon回滚事务

发表于 2013 年 3 月 12 日 由 惜分飞

在上一篇修改datablock itl(bbed模拟提交事务一之修改itl)的基础之上，本篇实现修改undo segment header中的相关事务槽信息,从而屏蔽数据库在重启或者进程异常的时候,smon的回滚操作,从而比较完美的实现了手工提交数据库事务
update table and uncommit(session 1)

SQL> select distinct
  2  dbms_rowid.rowid_relative_fno(rowid) rel_fno,
  3  dbms_rowid.rowid_block_number(rowid) block_no
  4  from chf.t_xifenfei;   

   REL_FNO   BLOCK_NO
---------- ----------
         4         28

SQL> select * from chf.t_xifenfei;

 OBJECT_ID OBJECT_NAME
---------- --------------------
        20 xifenfei.com
        44 xifenfei.com
        28 xifenfei.com
        15 xifenfei.com
        29 xifenfei.com
         3 xifenfei.com
        25 xifenfei.com
        39 xifenfei.com
        51 xifenfei.com
        26 xifenfei.com
        17 xifenfei.com
        13 xifenfei.com
         9 xifenfei.com
        41 xifenfei.com
        48 I_CON1
        38 I_OBJ3
         7 I_TS#
        53 I_CDEF4
        19 IND$

19 rows selected.

SQL> update chf.t_xifenfei set object_name='orasos.com' where rownum<10;

9 rows updated.

SQL> select * from chf.t_xifenfei;

 OBJECT_ID OBJECT_NAME
---------- --------------------
        20 orasos.com
        44 orasos.com
        28 orasos.com
        15 orasos.com
        29 orasos.com
         3 orasos.com
        25 orasos.com
        39 orasos.com
        51 orasos.com
        26 xifenfei.com
        17 xifenfei.com
        13 xifenfei.com
         9 xifenfei.com
        41 xifenfei.com
        48 I_CON1
        38 I_OBJ3
         7 I_TS#
        53 I_CDEF4
        19 IND$

19 rows selected.

dump undo header(session 2)

SQL> alter system flush buffer_cache;

System altered.

SQL> alter system checkpoint;

System altered.

SQL> SELECT XIDUSN,XIDSLOT,XIDSQN,UBAFIL,UBABLK,UBASQN,UBAREC FROM v$transaction;

    XIDUSN    XIDSLOT     XIDSQN     UBAFIL     UBABLK     UBASQN     UBAREC
---------- ---------- ---------- ---------- ---------- ---------- ----------
         1         13        367          2       1126        362         32

SQL>  alter system dump undo header "_SYSSMU1$";

System altered.


index  state cflags  wrap#    uel         scn            dba     parent-xid          nub       stmt_num       cmt
------------------------------------------------------------------------------------------------------------------
   …………
0x0c    9    0x00  0x016e  0x0029  0x0b2c.c02d1f6a  0x00800464  0x0000.000.00000000  0x00000001   0x00000000  1358813163
0x0d   10    0x80  0x016f  0x0002  0x0b2c.c02d7b15  0x00800466  0x0000.000.00000000  0x00000001   0x00000000  0
0x0e    9    0x00  0x016f  0x000f  0x0b2c.c02d2ae2  0x00800466  0x0000.000.00000000  0x00000001   0x00000000  1358820065
   …………

通过结合dump undo header 中的TRN TBL的state为10的为active事务,然后结合scn/dba等信息,
来确定是哪条记录是需要我们修改.然后通过find命令快速定位到0x0d这条记录,然后进行修改

通过结合bbed的dump命令得出16进制数据分析得出如下结论

--index 0x0c
6e01        0000 64048000      6a1f2dc0 2c0b0000      09       00          2900      
0000000000000000            00000000          01000000     ebd7fd50(1358813163注意存储顺序)

--index 0x0d
6f01  wrap# 0000 66048000 dba  157b2dc0 2c0b0000 scn  0a state 80  cflags  0200 uel  
0000000000000000 parent-xid 00000000 stmt_num 01000000 nub 00000000 cmt

--index 0x0e
6f01        0000 66048000      e22a2dc0 2c0b0000      09       00          0f00      
0000000000000000            00000000          01000000     e1f2fd50(1358820065)

bbed modify undo segment header(session 2)

BBED> f /x 0a80
 File: /u01/oracle/oradata/XFF/undotbs01.dbf (0)
 Block: 9                Offsets: 6736 to 6751           Dba:0x00000000
------------------------------------------------------------------------
 0a800200 00000000 00000000 00000000 

 <32 bytes per line>

BBED> m /x 0900
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/XFF/undotbs01.dbf (0)
 Block: 9                Offsets: 6736 to 6751           Dba:0x00000000
------------------------------------------------------------------------
 09000200 00000000 00000000 00000000  

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 9:
current = 0xecdd, required = 0xecdd

bbed modify data block itl(session 2)

struct ktbbhitl[0], 24 bytes             @44      
      struct ktbitxid, 8 bytes              @44      
         ub2 kxidusn                        @44       0x0001
         ub2 kxidslt                        @46       0x000d
         ub4 kxidsqn                        @48       0x0000016f
      struct ktbituba, 8 bytes              @52      
         ub4 kubadba                        @52       0x00800466
         ub2 kubaseq                        @56       0x016a
         ub1 kubarec                        @58       0x20
      ub2 ktbitflg                          @60       0x0009 (NONE)
      union _ktbitun, 2 bytes               @62      
         b2 _ktbitfsc                       @62       18
         ub2 _ktbitwrp                      @62       0x0012
      ub4 ktbitbas                          @64       0x00000000

BBED> m /x 0080 offset 60
Warning: contents of previous BIFILE will be lost. Proceed? (Y/N) y
 File: /u01/oracle/oradata/XFF/users01.dbf (0)
 Block: 28               Offsets:   60 to  571           Dba:0x00000000
------------------------------------------------------------------------
 00801200 00000000 09002a00 36020000  

 <32 bytes per line>

BBED> sum apply
Check value for File 0, Block 28:
current = 0xccf1, required = 0xccf1

restart db and select table(session 3)

SQL> shutdown abort
ORACLE instance shut down.
SQL> startup
ORACLE instance started.

Total System Global Area  306184192 bytes
Fixed Size                  1267164 bytes
Variable Size             109054500 bytes
Database Buffers          188743680 bytes
Redo Buffers                7118848 bytes
Database mounted.
Database opened.
SQL> col object_name for a20
SQL> set pages 100
SQL> select * from chf.t_xifenfei;

 OBJECT_ID OBJECT_NAME
---------- --------------------
        20 orasos.com
        44 orasos.com
        28 orasos.com
        15 orasos.com
        29 orasos.com
         3 orasos.com
        25 orasos.com
        39 orasos.com
        51 orasos.com
        26 xifenfei.com
        17 xifenfei.com
        13 xifenfei.com
         9 xifenfei.com
        41 xifenfei.com
        48 I_CON1
        38 I_OBJ3
         7 I_TS#
        53 I_CDEF4
        19 IND$

19 rows selected.

到此证明,通过修改undo segment header中的state和cflags实现数据库启动不回滚未提交事务；通过修改datablock itl实现数据库在访问未提交数据块时候不访问undo。从而整体上较完美的实现了手工提交一个事务(数据库提交一个事务涉及的方方面面较为复杂，这里只是通过修改最核心的两部分来大致模拟提交事务)

发表在 Oracle | 标签为 , | 2 条评论