as5安装oracle步骤
一:建立用户,用户组:
groupadd dba
groupadd oinstall
useradd oracle -g oinstall -G dba
passwd oracle
二:修改说明,改为as4
vi /etc/redhat-release
修改后的内容:
Red Hat Enterprise Linux AS release 4 (Nahant Update 4)
#Red Hat Enterprise Linux Server release 5.4 (Tikanga)
三:改host(不必,网上说网络检查通不过,其实可以不进行网络监察,在安装oracle时有一步是检查,把网络监察的勾去掉即可)
vi /etc/hosts
修改后的内容:
192.168.10.172 localhost.localdomain localhost
四:export LC_ALL=en_US(如果as5安装时是english时,不必)
五:在/etc/sysctl.conf添加
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default=262144
net.core.rmem_max=262144
net.core.wmem_default=262144
net.core.wmem_max=262144
使之生效:
/sbin/sysctl -p
六:在/etc/security/limits.conf中添加
* soft nproc 2047
* hard nproc 16384
* soft nofile 1024
* hard nofile 65536
七:在/etc/pam.d/login中添加
session required /lib/security/pam_limits.so
八:禁止secure linux
vi /etc/selinux/config
修改以下行:
SELINUX=disabled
九:vi ~/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin
export PATH
ORACLE_BA
相关文档：
vi /opt/back.sh(oracle用户)
#!/bin/ksh
tim=`date +%Y%m%d`
unset USERNAME
#export DISPLAY=0.0.0.0:0.0
#export ORACLE_BASE=/home/oraprod3
#export ORACLE_HOME=/prod/oracle/prod3db/9.2.0
#export ORACLE_SID=PROD3_db
#export LD_LIBRARY_PATH=/prod/oracle/prod3db/9.2.0/lib
#export ORACLE_TERM=vt100 ......
1、数据库的逻辑结构和物理结构：
Oracle logically divides the database into a smaller units to manage ,store,and retreive
data efficently.
Tablespace\Blocks\Extents\segment\
有四种segment:
data segment、Index segment、Temporay segment、Rollback Segment
temporary segment:
Ar ......
数据库的内存结构：
Memory structures are allocated to the Oracle instance when the instance is started.
The two major memory structures are known as the System Global Area(Also called the shared
Global Area)and the Program Global Area(also called the Private Global Area or the ......
rom：http://www.psoug.org/reference/dbms_metadata.html
General Information
Source
{ORACLE_HOME}/rdbms/admin/dbmsmeta.sql
First Available
9.0.1
几个常用过程或函数：
GET_DDL
Fetch DDL for objects
dbms_metadata.get_ddl(
object_type IN VARCHAR2,
name IN VA ......
用户号码 登陆时间
1300000000 2010-01-01
1300000001 2010-01-01
1300000002 2010-01-02
1300000001 2010-01-02
1300000003 2010-01-03
1300000002 2010-01-03
1300000004 2010-01-04
1300000003 2010-01-04
1300000004 2010-01-02
1300000006 2011-01-04
1300000001 2011-01-04
剔除重复� ......
