1、oracle版本：11 g Release 2 (11.2) for Linux
光盘附带安装文档：E10840-01
2、遇到问题：
当安装进行到“执行先决条件检查”进度条到47%，提示信息为：正在检查 硬性限制：打开的文件描述符的最大数
，就卡在此处一直处于等待状态。
3、检查了oracle用户的ulimit，均满足安装文档要求
[oracle@jkdb2 ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 270336
max locked memory (kbytes, -l) 32
max memory size (kbytes, -m) unlimited
open files (-n) 65536
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 16384
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
[oracle@jkdb2 ~]$
4、截取后半截安装日志：
INFO: Waiting for completion all forked tasks at state performChecks
INFO: Creating PrereqChecker Job for leaf task 物理内存
INFO: Creating PrereqChecker Job for leaf task 可用物理内存
INFO: Creating PrereqChecker Job for leaf task 交换空间大小
INFO: Creating CompositePrereqChecker Job for container task 空闲空间
INFO: Creating PrereqChecker Job for leaf task 空闲空间: jkdb2:/tmp
INFO: Creating PrereqChecker Job for leaf task 用户存在性: oracle
INFO: Creating PrereqChecker Job for leaf task 组存在性: dba
INFO: Creating PrereqChecker Job for leaf task 组成员资格: dba
INFO: Creating PrereqChecker Job for leaf task 运行级别
INFO: Creating PrereqChecker Job for leaf task 硬性限制: 打开的文件描述符的最大数
INFO: Creating PrereqChecker Job for leaf task 软性限制: 打开的文件描述符的最大数
INFO: Creating PrereqChecker Job for leaf task 硬性限制: 最大用户进程数
INFO: Creating PrereqChecker Job for leaf task 软性限制: 最大用户进程数
INFO: Creating PrereqChecker Job for leaf task 体系结构
INFO: Creating PrereqChecker Job for leaf task 操作系统内核版本