闻一知十

今天读 桓谭新论。 启窹篇。

昔颜渊有高妙次圣之才，闻一知十。
颜渊所有命短，慕孔子所以殇其年也。
东鄙语云： 人闻长安乐，则出门西向而笑；知肉味美，则对屠门而大嚼。

然后写下来。

其实没多少人读，如果这几天不小心谁来看过，也就看过了。

Fri Oct 25 21:39:52 CST 2013

这段日志记下来，是在服务器搬家后。 这以后 这些日志也许就能正常访问了。

两个域名都已经被墙，然后什么也做不了，就藏着吧。

-s

 

以贤代贤

今读《恒谭新论》求辅篇。

有一惑:

于另本如下

其直”代”、“伐” 分别

代、伐 两字 字义同乎，是依代讳伐之谓？ 徜是如此，是战国“以攻伐为贤”，是而贤者伐暴乱而代之为贤。贤代贤又如何谓之顺？何则贤而暴乱更替不断？“烦”其妙不可言。

又，何谓之“乱”。其 治乱不分， 而或不辨不肖之徒所征伐代替者，乱矣。或言，以不肖犯贤者，谓之乱。以不肖代不肖，亦如是。

 

-s

A Best Practice to Prepare EL6 Linux for Oracle RDBMS Installation

following is not a guide to install RDBMS, but a quick environment preparation before that.
this text works on both Linux/Windows host.

0. to setup Oracle RDBMS 12c on EL6.3 vbox.  for testing purpose.

1. prepare virtualbox.
setup a new linux machine, with harddisk 40G,  network using NAT.

2. attach image on CD. boot
OracleLinux-R6-U3-Server-x86_64-dvd.iso

3. install option.
a) using the full disk, using default dynamic lv settings(means you can adjust disk sizes whenever you want)
b) install option: Desktop (or you may have to using vnc or inst other Xwindow options if you choose “Database Server”).
c) reboot after installation. using account: oracle/oracle

4.  we need to manually install vboxtools (for a better display and operation experience enhancement)
before that we need to :

5.   keep the sys image mount.  manually install kernel-uek-devel, the # should be the same to your currently running version.

6.  check your yum repo setting. (you need uln repo, or simple public-yum is ok)
or you have to manually install dependency in the package folder.
# yum install gcc

7.  detach the sys-image. choose “Install Guest Additions”
run as prompt, or in cmd.

8.  ignore following warning, as the package already re-named to kernel-uek-devel

9. about the necessary packages you can use following cmd:

10. choosing “System”->”Preference”->”Startup Applications”
remove item “PackageKit Update Applet” , so that you should update your pkgs whenever you want and need.
remove any other items you dont like.

11. disable SELinux and firewall.
edit /etc/selinux/config  to –>”disabled”
system-config-firewall  –> “Disable”

12. let eth0 connect automatically.
either 1) using desktop network-manager, edit connection–>eth0–> connect automatically.
or 2) edit /etc/sysconfig/network-scripts/ifcfg-eth0
add following like:  “ONBOOT=yes”

reboot the node.

F.  setups already done.  you can now following guide to complete the installation

Oracle Database 11g Release 2 (11.2) Installation On Oracle Linux 6
http://www.oracle-base.com/articles/11g/oracle-db-11gr2-installation-on-oracle-linux-6.php

######

the steps are simple but, wish it saves time you read this post before the installation.

-s

 

 

 

 

 

ASMLib support on RedHat EL6

recently oracle adds support on ASMlib+RHEL6 kernel.

will seems some policies already being changed.

if someone interested, refer to

http://www.oracle.com/technetwork/server-storage/linux/asmlib/rhel6-1940776.html

To enable ASMlib supports, please download following file from oracle web-site

and get supports ‘kmod-oracleasm’ from RedHat RHN or related support.

good luck.

手动更新portsnap

这是一段中文。希望能帮上那些被可怜的http代理折磨的人们。

在我的FreeBSD盒子里，portsnap fetch一直失败，分析了一下代码，就是代理的问题。

因为某公司在这边办公室访问公网需要通过http_proxy，上面又加了很多过滤的东西，导致下载文件会被无故终止。

命令断在这里

下载到9%的时候出错，估计是代理端的防火墙无法扫描文件内容就停掉了。Damn McAfee.

把fetch换成wget/axel均无用， 下载是否成功 取决于他们是否能读懂文件内容。

无奈，送给那些同样辛苦的人们，

系统

代理
http://server:80/

绕过办法，
找一个不需要此代理的机器，或者能直接访问公网的地方，下载上述fetch文件。tgz
再scp到bsd节点的/tmp/下面。

修改 /usr/sbin/portsnap文件， 把原来的fetch行改掉，改成 复制命令。(是否要备份原脚本，取决于心情)

一路畅通。远离那些讨厌的事情。