第一步，安装VirtualBox

安装完系统后分辨率不合适如何修改

安装完Suse12进入图形界面后会出现分辨率锁定为640*480，使用yast2无法修改，同时使用xrandr命令无法修改分辨率，图形界面如下图：

Xrandr命令输出如下：

修改文件/boot/grub2/grub.cfg ，在133行左右，图中位置添加 vga=0x365，保存后推出，重启可将系统分辨率修改为1440*900。

启动VNC服务。

SSH登录后，执行vncserver命令（ 或/usr/local/vnc # ./vncserver ）

提示：You will require a password to access your desktops.

设置远程访问的密码。（文件路径在/usr/local/vnc/vncpasswd）

Password：（输入密码）

Verify： （再次输入）

提示：Would you like to enter a view-only password （y/n）？ n（是否输入一个只能查看的密码，选择否）

提示信息如下：

xauth： creating new authority file /root/.Xauthority

New 'X' desktop is -eyh7：2（桌面编号为2）

Creating default startup script /root/.vnc/xstartup

Starting applications specified in /root/.vnc/xstartup

Log file is /root/.vnc/-eyh7：2.log

设置完毕后重新启动服务器。

windows vnc客户端软件。

运行VNC查看器，输入的IP和桌面编号：

如：192.168.75.130：1 而后输入VNC连接密码就可以登录进去了。

安装Oracle Database 12c

Configuring Servers for Oracle Database

This section describes the following operating system tasks you must complete before@H_404_53@ you install Oracle Database:@H_404_53@ ■ Checking Server Hardware and Memory Configuration@H_404_53@ ■ General Server Minimum Requirements@H_404_53@ ■ Server Storage Minimum Requirements@H_404_53@ ■ Server Memory Minimum Requirements@H_404_53@ 3.1 Checking Server Hardware and Memory Configuration@H_404_53@ Run the following commands to check your current system information:@H_404_53@ 1. To determine the physical RAM size,enter the following command:@H_404_53@ # grep MemTotal /proc/meminfo@H_404_53@ If the size of the physical RAM installed in the system is less than the required@H_404_53@ size,then you must install more memory before continuing.@H_404_53@ 2. To determine the size of the configured swap space,enter the following command:@H_404_53@ # grep SwapTotal /proc/meminfo@H_404_53@ If necessary,see your operating system documentation for information about how@H_404_53@ to configure additional swap space.@H_404_53@ 3. To determine the amount of space available in the /tmp directory,enter the@H_404_53@ following command:@H_404_53@ # df -h /tmp

@H_404_53@ 4. To determine the amount of free disk space on the system,enter the following@H_404_53@ command:@H_404_53@ # df -h

@H_404_53@ 5. To determine the amount of free RAM and disk swap space on the system,enter@H_404_53@ the following command:@H_404_53@ # free

@H_404_53@ 6. To determine if the system architecture can run the software,enter the following@H_404_53@ command:@H_404_53@ # uname -m

@H_404_53@ Verify that the processor architecture matches the Oracle software release to install.@H_404_53@ For example,you should see the following for a x86-64 bit system:@H_404_53@ x86_64@H_404_53@ If you do not see the expected output,then you cannot install the software on this@H_404_53@ system.

设置用户限制

在/etc/security/limits.conf中添加如下配置。

oracle soft nproc 2047

oracle hard nproc 16384

oracle soft nofile 1024

oracle hard nofile 65536

oracle soft stack 10240

oracle hard stack 10240

配置环境变量

首先切换到oracle账户 ，编辑修改主目录下 .bash_profile

测试环境Swap设置的小了，后续可以扩展，先不管，忽略。

Toad的配置