vultr linux 安装oracle 数据库碰到的问题

问题1： swap大小通不过

Createa swap file command

Type thefollowing command to create a 2GB swap file on Ubuntu:
# dd if=/dev/zero of=/swapfile bs=1G count=2
Sample outputs:

2+0 records in

2+0 records out

2147483648 bytes (2.1 GB) copied, 20.2256 s, 106 MB/s

Verify thatfile has been created on the server:
# ls -lh /swapfile
Sample outputs:

-rw-r--r-- 1 root root 2.0G Oct 29 14:07 /swapfile

Securethe swap file

Type thefollowing chmod command and chown command to secure and set correct filepermission for security reasons:
# chown root:root /swapfile
# chmod 0600 /swapfile
# ls -lh /swapfile

Sample outputs:

-rw------- 1 root root 2.0G Oct 29 14:07 /swapfile

A world-readable swap file is a huge localvulnerability. The above commands make sure only root user can read and writeto the file.

Turn onthe swap file

First, use themkswap command as follows to enable the swap space on Ubuntu:
# mkswap /swapfile
Sample outputs:

Setting up swapspace version 1, size = 2097148 KiB

no label, UUID=10231c61-6e55-4dd3-8324-9e2a892e7137

Finally,activate the swap file, enter:
# swapon /swapfile

Verifynew swap file and settings on Ubuntu

Type thefollowing command
# swapon -s
Sample outputs:

Filename                          Type          Size   Used   Priority

/dev/sda5                               partition  3998716       704    -1

/swapfile                               file       2097148       0      -2

问题2：  semopm  file-max 等等验证通不过

编辑/etc/sysctl.conf文件，添加

fs.aio-max-nr = 1048576

fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
//kernel.semmni = 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304

net.core.wmem_default = 262144

最好执行/sbin/sysctl -p