CentOS7.8安装19C - 墨天轮文档

CentOS7.8安装19C

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9页

16次

2020-10-29

5墨值下载

1、关闭防火墙

systemctl stop rewalld

systemctl disable rewalld

2、修改 selinux cong 文件

setenforce 0

3、修改 hosts 文件

4、配置 yum

[localserver]

name=localserver

baseurl=le:///mnt

gpgcheck=0

enable=1

安装依赖包

yum install –y compat-libcap1 compat-libstdc++-33 elfutils-libelf-devel fontcong-devel

glibc-devel ksh libaio-devel libXrender-devel libstdc++-devel

5、禁用透明大页

Disabling Transparent HugePages

Oracle recommends that you disable Transparent HugePages before you start

installation.

Transparent HugePages memory differs from standard HugePages memory because

the kernel khugepaged thread allocates memory dynamically during runtime. Standard

HugePages memory is pre-allocated at startup, and does not change during runtime.

Transparent HugePages memory is enabled by default with Oracle Linux 6 and later,

Red Hat Enterprise Linux 6 and later, SUSE 11 and later, kernels.

Transparent HugePages can cause memory allocation delays during runtime. To avoid

performance issues, Oracle recommends that you disable Transparent HugePages

on all Oracle Database servers. Oracle recommends that you instead use standard

HugePages for enhanced performance.

To check if Transparent HugePages is enabled, run one of the following commands as

the root user:

Red Hat Enterprise Linux kernels:

# cat /sys/kernel/mm/redhat_transparent_hugepage/enabled

Other kernels:

# cat /sys/kernel/mm/transparent_hugepage/enabled

The following is a sample output that shows Transparent HugePages are being used

as the [always] flag is enabled.

[always] never

To disable Transparent HugePages:

1. For Oracle Linux 7 and Red Hat Enterprise Linux 7, add or modify the

transparent_hugepage=never parameter in the /etc/default/grub file:

transparent_hugepage=never

For example:

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet numa=off

transparent_hugepage=never"

GRUB_DISABLE_RECOVERY="true"

2. Run the grub2–mkconfig command to regenerate the grub.cfg file.

# grub2-mkconfig -o /boot/grub2/grub.cfg

3. Restart the system to make the changes permanent.

6、新建用户组

groupadd -g 5001 dba

groupadd -g 5002 asmdba

groupadd -g 5003 backupdba

groupadd -g 5004 dgdba

groupadd -g 5005 kmdba

groupadd -g 5006 racdba

groupadd -g 5007 oper

groupadd -g 5008 oinstall

useradd -u 54321 -g oinstall -G dba,asmdba,backupdba,dgdba,kmdba,racdba,oper

oracle

mkdir –p /u01/app/oracle/oraInventory

mkdir –p /u01/app/oracle/product/19.3.0/db

chown –R oracle:oinstall /u01

chmod –R 775 /u01

passwd oracle

7、修改配置文件