Oracle RAC 安装完毕后的健壮性是一个令人头疼的问题。之前Oracle为之专门推出了raccheck工具，确实方便了我们这些个苦逼的DBA。现在Oracle在raccheck的基础之上又推出了orachk. orachk包含了EXAchk 的功能并替换了流行的 RACcheck 工具，扩大根据用户报告的最重要问题的优先次序的覆盖面，并且主动扫描E-Business Suite Financials Accounts Payables、Oracle Database、Sun Systems等产品的已知问题。下面将为您揭开其面纱。
1、orachk的功能
将主动扫描您的整个工程系统（Engineered System）以及您系统各层级中最有影响的已知问题。
简化和优化如何调查和分析哪些已知问题对您构成风险
轻量级工具运行在您的环境中，没有数据被发送到 Oracle
总览报告显示您的系统的健康风险，具有深入到具体问题，了解他们的解决方案的能力
可配置它检测到问题时发送电子邮件通知
收集管理器（Collection Manager），一个 Application Express Web 应用程序，提供了搜集整个企业信息的单独仪表盘视图
2、orachk支持的领域、平台及其数据库版本
支持的领域
Oracle Database:
Standalone Database
Grid Infrastructure & RAC
Maximum Availability Architecture (MAA) Validation
Upgrade Readiness Validation
Golden Gate
E-Business Suite:
Financials Accounts Payables
Sun Systems：
Oracle Solaris
平台及其数据库版本
Linux x86-64* (Enterprise Linux, RedHat and SuSE 9, SuSE 10 & SuSE 11)
Oracle Solaris SPARC (Solaris 10 and 11)
Oracle Solaris x86-64 (Solaris 10 and 11)
AIX **
HPUX**
* 32-bit platforms not supported, no planned support for Linux Itanium
**Requires BASH Shell 3.2 or higher to be installed
支持的数据库版本: 10gR2、11gR1、11gR2、12cR1
orachk 检查的具体内容
OS kernel parameters
OS packages
Many other OS configuration settings important to RAC.
CRS/Grid Infrastructure
RDBMS
ASM
Database parameters
Many other database configuration settings important to RAC.
Upgrade Readiness assessment for target versions 11.2.0.3 and above
3、何时需要orachk?
After initial Oracle RAC deployment
Before planned system maintenance
After planned system maintenance
At least once every three months
4、配置及运行orachk
a、下载orachk工具，目前最新的版本是ORAchk 2.2.4
b、使用oracle或者root帐户登陆到服务器，解压下载的文件到指定的安装路径
c、教研orachk的权限为755，如果不是755，则授予其权限为755。如：$ chmod 755 orachk
d、运行orachk工具。如：$ ./orachk #对于非root用户运行过程中需要root用户而服务提供密码的情形一些检查会被跳过
5、实战orachk
#对于suse linux，应注意修改orachk文件头部"/bin/evn"为"/usr/bin/env"，否则会收到/bin/evn不存在的错误提示
ordb1:oracle:orcl101 > which env #使用which env检查当前的env环境
/usr/bin/env
#获取帮助信息
ordb1:oracle:orcl101 > ./orachk -h
Usage : ./orachk [-abvhpfmsuSo:c:t:]
-a All (Perform best practice check and recommended patch check)
-b Best Practice check only. No recommended patch check
-h Show usage
-v Show version
-p Patch check only
-m exclude checks for Maximum Availability Architecture (MAA) scorecards(see user guide for more details)
-u Run orachk to check pre-upgrade or post-upgrade best practices for 11.2.0.3,11.2.0.4.0 and 12.1.0.1
-o pre or -o post is mandatory with -u option like ./orachk -u -o pre
-f Run Offline.Checks will be performed on data already collected from the system
-o Argument to an option. if -o is followed by v,V,Verbose,VERBOSE or Verbose, it will print checks which passs on the screen
if -o option is not specified,it will print only failures on screen. for eg: orachk -a -o v
-clusternodes
Pass comma separated node names to run orachk only on subset of nodes.
..........................后面省略...............
ordb1:oracle:orcl101 > ./orachk -a
Checking ssh user equivalency settings on all nodes in cluster
Node oadb2 is configured for ssh user equivalency for oracle user
# Author: Leshami Blog : http://blog.csdn.net/leshmai
Searching for running databases . . . . .
. .
List of running databases registered in OCR
1. orcl10
2. None of above
Select databases from list for checking best practices. For multiple databases, select 1 for All or comma separated number like 1,2 etc [1-2][1].
. .
Checking Status of Oracle Software Stack - Clusterware, ASM, RDBMS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-------------------------------------------------------------------------------------------------------
Oracle Stack Status
-------------------------------------------------------------------------------------------------------
Host Name CRS Installed ASM HOME RDBMS Installed CRS UP ASM UP RDBMS UP DB Instance Name
-------------------------------------------------------------------------------------------------------
ordb1 Yes Yes Yes Yes Yes Yes orcl101
ordb2 Yes Yes Yes Yes Yes Yes orcl102
-------------------------------------------------------------------------------------------------------
Copying plug-ins
. . . . . . . . . . . . . 根据提示逐步往下走..............................
检查完毕之后会在当前目录生成相应的目录及报告文件,如本例，直接查看相应的html文件即可
ordb1:oracle:orcl101 > pwd
/opt/oracle/soft/orachk/orachk_ordb1_orcl10_031214_105523
ordb1:oracle:orcl101 > ls -hltr
total 774K
-rw-r--r-- 1 oracle oinstall 87K Mar 12 11:01 pxhcdr_orcl10_ordb1_10.2.0.5.0_20140312_110120.zip
drwxr-xr-x 2 oracle oinstall 320 Mar 12 11:03 upload
drwxr-xr-x 2 oracle oinstall 648 Mar 12 11:03 reports
drwxr-xr-x 2 oracle oinstall 38K Mar 12 11:03 outfiles
-rw-r--r-- 1 oracle oinstall 646K Mar 12 11:03 orachk_ordb1_orcl10_031214_105523.html
drwxr-xr-x 2 oracle oinstall 208 Mar 12 11:03 log
更多相关的功能直接参考help文件或者查看ORAchk User Guide.pdf
参考:1268927.2
相关参考
RMAN 配置保留策略
Oracle 闪回区(Oracle Flash recovery area)
Oracle 快照控制文件(snapshot control file)
基于RMAN的异机数据库克隆(rman duplicate)
基于RMAN从活动数据库异机克隆(rman duplicate from active DB)
RMAN duplicate from active 时遭遇 ORA-17627 ORA-12154
Oracle 基于备份控制文件的恢复(unsing backup controlfile)
