Rhel7_Oracle11g_rac安装方法是什么

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1、禁用selinux

getenforcesetenforce 0vim /etc/selinux/config

2、关闭防火墙、禁止开机启动

systemctl stop firewalld.servicesystemctl disable firewalld.service

3、修改主机名

主机名中禁止使用下划线"_"，建议使用小写字母，长度小于8位hostnamectl set-hostname mydb1hostnamectl set-hostname mydb2修改完重新登录

4、配置yum

mount -t iso9660 -o loop /dev/sr0 /media/cat rhel7.repo[base]name=rhel7.7baseurl=file:///mediaenable=1gpgcheck=0

5、关闭没必要的服务

Redhat6:service iptables stopservice ip6tables stopchkconfig iptables offchkconfig ip6tables offservice sshd startchkconfig sshd onservice Bluetooth stopchkconfig Bluetooth offservice postfix stopchkconfig postfix offservice cups stopchkconfig cups offservice cpuspeed offchkconfig cpuspeed offservice NetworkManager stopchkconfig NetworkManager offservice vsftpd stopchkconfig vsftpd offservice dhcpd stopchkconfig dhcpd offservice nfs stopchkconfig nfs offservice nfslock stopchkconfig nfslock offservice ypbind stopchkconfig ypbind offRedhat7:.................

5、安装依赖包

--检查rpm -q --qf '%{NAME}-%{VERSION}-%{RELEASE} (%{ARCH})\n' \binutils \compat-libcap1 \compat-libstdc++-33 \gcc \gcc-c++ \glibc \glibc-devel \ksh \libstdc++ \libstdc++-devel \libaio \libaio-devel \make \sysstat--安装yum -y install binutils compat-libstdc++-33 gcc gcc-c++ glibc glibc-common glibc-devel ksh libaio libaio-devel libgcc libstdc++ libstdc++-devel make sysstat openssh-clients compat-libcap1 xorg-x11-utils xorg-x11-xauth elfutils unixODBC unixODBC-devel libXp elfutils-libelf elfutils-libelf-devel smartmontools

6、内核参数修改

--计算方法：cat /proc/sys/fs/file-max + 512 * process * instance numberfs.file-max = 6815744kernel.sem = 250 32000 100 128kernel.shmmni = 4096--计算方法：getconf PAGE_SIZE   TOTAL RAM  IN BYTES / PAGE_SIZEkernel.shmall = ‭536870912‬--计算方法：HALF OF TOTAL RAM  IN BYTESkernel.shmmax = ‭1073741824‬net.ipv4.ip_local_port_range = 9000 65500net.core.rmem_default = 262144net.core.wmem_default = 262144net.core.rmem_max = 4194304net.core.wmem_max = 1048576fs.aio-max-nr = 4194304vm.dirty_ratio=20vm.dirty_background_ratio=3vm.dirty_writeback_centisecs=100vm.dirty_expire_centisecs=500vm.swappiness=10vm.min_free_kbytes=524288#rp_filter，这里假设 eth3 和 eth4 都是私有网卡net.ipv4.conf.ens39.rp_filter = 2net.ipv4.conf.ens39.rp_filter = 2#IP分片汇聚的最大/最小内存用量，计算公式：numCPU *130000，逻辑 cpu 为 96，那么 high参数建议至少设置为 12m 以上。同时 low 参数比 high 参数少 1m 即可。net.ipv4.ipfrag_high_thresh=16777216net.ipv4.ipfrag_low_thresh=15728640net.ipv4.ipfrag_time=60-----修改后如下：fs.file-max = 6815744kernel.sem = 250 32000 100 128kernel.shmmni = 4096kernel.shmall = 536870912kernel.shmmax = 1073741824net.ipv4.ip_local_port_range = 9000 65500net.core.rmem_default = 262144net.core.wmem_default = 262144net.core.rmem_max = 4194304net.core.wmem_max = 1048576fs.aio-max-nr = 4194304vm.dirty_ratio= 20vm.dirty_background_ratio= 3vm.dirty_writeback_centisecs= 100vm.dirty_expire_centisecs= 500vm.swappiness= 10vm.min_free_kbytes= 524288net.ipv4.conf.ens39.rp_filter = 2net.ipv4.conf.ens39.rp_filter = 2net.ipv4.ipfrag_high_thresh=16777216net.ipv4.ipfrag_low_thresh=15728640net.ipv4.ipfrag_time=60

7、关闭操作系统透明大页

redhat7# cat /sys/kernel/mm/transparent_hugepage/enabledalways madvise [never]--增加transparent_hugepage=nevercat /etc/default/grubGRUB_TIMEOUT=5GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"GRUB_DEFAULT=savedGRUB_DISABLE_SUBMENU=trueGRUB_TERMINAL_OUTPUT="console"GRUB_CMDLINE_LINUX="rd.lvm.lv=myvg/swap rd.lvm.lv=myvg/usrvconsole.font=latarcyrheb-sun16 rd.lvm.lv=myvg/root crashkernel=autovconsole.keymap=us rhgb quiet transparent_hugepage=never"GRUB_DISABLE_RECOVERY="true"--对grub生效# grub2-mkconfig -o /boot/grub2/grub.cfgGenerating grub configuration file ...Found linux image: /boot/vmlinuz-3.10.0-123.el7.x86_64Found initrd image: /boot/initramfs-3.10.0-123.el7.x86_64.imgFound linux image: /boot/vmlinuz-0-rescue-41c535c189b842eea5a8c20cbd9bff26Found initrd image: /boot/initramfs-0-rescue-41c535c189b842eea5a8c20cbd9bff26.imgdone--关闭tuned服务# systemctl stop tuned.service# systemctl disable tuned.service--重启reboot--确认cat /sys/kernel/mm/transparent_hugepage/enabledredhat6、redhat7在/etc/rc.d/rc.local文件中加入下面配置，重启生效：if test -f /sys/kernel/mm/transparent_hugepage/enabled; thenecho never > /sys/kernel/mm/transparent_hugepage/enabledfiif test -f /sys/kernel/mm/transparent_hugepage/defrag; thenecho never > /sys/kernel/mm/transparent_hugepage/defragfi重启后确认结果如下：cat /sys/kernel/mm/transparent_hugepage/defragalways [never]cat /sys/kernel/mm/transparent_hugepage/enabledalways [never]

8、ntp设置

Redhat6配置： # vi /etc/sysconfig/ntpd# Drop root to id 'ntp:ntp' by default.OPTIONS="-x -u ntp:ntp -p /var/run/ntpd.pid"   #启动微调模式# Set to 'yes' to sync hw clock after successful ntpdateSYNC_HWCLOCK=yes  #同步硬件bios时间#vi /etc/ntp.confserver xx.xx.xx.xx prefer   #添加ntp服务器地址为首要地址server 127.127.1.0 iburst#添加本机为次要同步地址#vi /etc/ntp/step-tickersxx.xx.xx.xx#添加ntp服务器地址，设置在ntp启动时自动同步时间配置完毕后，重启ntpd服务，并查看状态chkconfig ntpd onservice ntpd restartntpstat#查看ntpd服务状态date  #查看时间是否正常redhat7配置：yum install ntpvi /etc/ntp.confserver 10.5.26.10 iburstvi /etc/sysconfig/ntpdOPTIONS="-x -g"systemctl start ntpd.servicesystemctl enable ntpd.servicesystemctl status ntpd.service

9、网卡绑定

red6touch /etc/modprobe.d/bonding.confecho "alias bondeth0 bonding" >> /etc/modprobe.d/bonding.confvi /etc/sysconfig/network-scripts/ifcfg-bond0DEVICE=bond0ONBOOT=yesBOOTPROTO=staticUSERCTL=noNM_CONTROLLED=noIPADDR=10.1.2.3NETMASK=255.255.255.0GATEWAY=10.1.2.254BONDING_OPTS="mode=1 miimon=100"vi /etc/sysconfig/network-scripts/ifcfg-eth0DEVICE=eth0ONBOOT=yesBOOTPROTO=noneMASTER=bond0SLAVE=yesUSERCTL=noNM_CONTROLLED=noecho "ifenslave bond0 eth0 eth2" >>/etc/rc.d/rc.local重启服务器查看状态cat /sys/class/net/bonding_masterscat /sys/class/net/bondeth0/bonding/modecat /proc/net/bonding/bondeth0通过拔插网线验证red7 nmcli team

10、网络检查

(1). 确保节点间通信网络（私有网络）是通过单独的交换机连接，而不是直连。(2). 确保所有节点的连接到相同网络的网卡名称、网络子网都一样。比如连接到 public网络的网卡名称都叫 eth0，其 IP 地址子网都是 133.37.x.0，子网掩码都为255.255.255.0。(3). 确保系统中有且只有一个默认路由，并且是通过 public 网络到达默认路由。(4). 确保网卡到网络的带宽是正确的。#ethtool eth2Settings for eth2:Supported ports: [ TP ]Supported link modes: 10baseT/Half 10baseT/Full100baseT/Half 100baseT/Full1000baseT/FullSupports auto-negotiation: YesAdvertised link modes: 10baseT/Half 10baseT/Full100baseT/Half 100baseT/Full1000baseT/FullAdvertised auto-negotiation: YesSpeed: 1000Mb/sDuplex: FullPort: Twisted PairPHYAD: 1Transceiver: internalAuto-negotiation: onSupports Wake-on: umbgWake-on: gCurrent message level: 0x00000003 (3)Link detected: yes上面的 Speed: 1000Mb/s 表示连接的实际网络带宽为 1000Mbps。虽然交换机、网卡都是 1000Mbps 或以上带宽，但有时由于端口问题、网络线缆问题等原因，实际带宽并没有这么多。(5). 确保在私有网络上开启了多播。可以在 Oracle 官方支持网站上下载 mcasttest.pl脚本进行检查

11、存储多路径配置

见 https://www.modb.pro/db/14031

12、创建用户组

groupadd -g 1000 oinstallgroupadd -g 1001 dbagroupadd -g 1002 opergroupadd -g 1003 asmadmingroupadd -g 1004 asmopergroupadd -g 1005 asmdbauseradd -u 1000 -g oinstall -G dba,oper,asmdba oracleuseradd -u 1001 -g oinstall -G dba,asmadmin,asmdba,asmoper,oper grid

13、limits限制

touch /etc/security/limits.d/99-grid-oracle-limits.confgrid  soft  nproc 16384grid  hard  nproc 16384grid  soft  nofile 10240grid  hard  nofile 65536grid  soft  stack 10240grid  hard  stack 32768grid  soft  memlock unlimitedgrid  hard  memlock unlimitedgrid  soft  core unlimitedgrid  hard  core unlimitedoracle  soft  nproc 16384oracle  hard  nproc 16384oracle  soft  nofile 10240oracle  hard  nofile 65536oracle  soft  stack 10240oracle  hard  stack 32768oracle  soft  memlock unlimitedoracle  hard  memlock unlimitedoracle  soft  core unlimitedoracle  hard  core unlimitedtouch /etc/profile.d/oracle-grid.sh#Setting the appropriate ulimits for oracle and grid userif [ $USER = "oracle" ]; then    if [ $SHELL = "/bin/ksh" ]; then        ulimit -u 16384        ulimit -n 65536else        ulimit -u 16384 -n 65536    fifiif [ $USER = "grid" ]; then    if [ $SHELL = "/bin/ksh" ]; then        ulimit -u 16384        ulimit -n 65536    else        ulimit -u 16384 -n 65536    fifi

14、创建目录

集群软件BASE目录：/u01/app/oracle集群软件HOME目录：/u01/app/11.2.0/grid 数据库软件BASE目录：/u01/app/oracle数据库软件HOME目录：/u01/app/oracle/product/11.2.0/db_homemkdir -p /u01/app/gridmkdir -p /u01/app/11.2.0/gridmkdir -p /u01/app/oraInventorychown -R grid:oinstall /u01/mkdir -p /u01/app/oracle/product/11.2.0/db_homechown -R oracle:oinstall /u01/app/oracle/chmod -R 755 /u01

15、设置oracle、grid用户环境变量

oracle:export  TMP=/tmpexport  TMPDIR=$TMPexport  ORACLE_SID=racdb1;export  ORACLE_BASE=/u01/app/oracleexport  ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_homeexport  ORACLE_TERM=xtermexport  PATH=/usr/sbin:$PATHexport  PATH=$ORACLE_HOME/bin:$PATHexport  LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/libexport  CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlibexport    NLS_LANG=AMERICAN_AMERICA.ZHS16GBKexport    LANG=en_US.UTF-8umask 022grid:export ORACLE_SID=+ASM1export ORACLE_OWNER=gridexport ORACLE_BASE=/u01/app/gridexport ORACLE_HOME=/u01/app/11.2.0/gridexport LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ORACLE_HOME/lib:/lib:/usr/lib:/usr/local/lib PATH=$PATH:$HOME/bin$:$ORACLE_HOME/binexport    LANG=en_US.UTF-8export PATH umask 022

16、修改hosts文件

Public IP：别名直接使用主机名，即uname -a返回的机器名；Private IP: 别名为主机名-priv。Virtual IP：别名为主机名-vip。SCAN IP：别名为数据库名-scan。#Public Ip192.168.0.203 mydb1192.168.0.204 mydb2#Virtual Ip192.168.0.205 mydb1-vip192.168.0.206 mydb2-vip#Private Ip192.168.124.203 mydb1-priv192.168.124.204 mydb2-priv#Scan Ip192.168.0.207 racdb-scan

17、设置互信

安装grid软件时使用sshUserSetup.sh快速创建互信, $node1 $node2变量参数需要根据实际节点名称进行内容调整。在一个节点上执行即可（可以在root用户下执行）：./sshUserSetup.sh -user grid  -hosts "$node1 $node2" -advanced -exverify -confirm./sshUserSetup.sh -user oracle  -hosts "$node1 $node2" -advanced -exverify -confirm

18、命名规范

1）集群（CLUSTER）的命名规则Cluster name本身没有特殊用途，仅在使用其他管理工具统一管理不同RAC实例时有用，不得超过15个字符。${DB_NAME}-cls2)SCAN的命名规则SCAN 名称本身没有特殊用途，仅在使用其他管理工具统一管理时有用，不得超过15个字符。${DB_NAME}-scan

19、安装时检查忽略选项

1）Package：pdksh-5.2.142)Device Checks for AM3)Task resolv.conf Integrity

20、grid集群软件安装，在执行root.sh脚本前，添加ohas服务

touch /usr/lib/systemd/system/ohas.servicechmod 777 /usr/lib/systemd/system/ohas.serviceohas.service ：[Unit]Description=Oracle High Availability ServicesAfter=syslog.target[Service]ExecStart=/etc/init.d/init.ohasd run >/dev/null 2>&1 Type=simpleRestart=always[Install]WantedBy=multi-user.targetsystemctl daemon-reloadsystemctl enable ohas.servicesystemctl start ohas.servicesystemctl status ohas.service

21、在两个节点分别执行orainstRoot.sh和root.sh脚本

执行顺序：1节点orainstRoot.sh，2节点orainstRoot.sh，1节点root.sh,2节点root.sh1节点：[root@mydb1 system]# /u01/app/oraInventory/orainstRoot.shChanging permissions of /u01/app/oraInventory.Adding read,write permissions for group.Removing read,write,execute permissions for world.Changing groupname of /u01/app/oraInventory to oinstall.The execution of the script is complete.[root@mydb1 system]# /u01/app/11.2.0/grid/root.shPerforming root user operation for Oracle 11g The following environment variables are set as:ORACLE_OWNER= gridORACLE_HOME=  /u01/app/11.2.0/gridEnter the full pathname of the local bin directory: [/usr/local/bin]:    Copying dbhome to /usr/local/bin ...   Copying oraenv to /usr/local/bin ...   Copying coraenv to /usr/local/bin ...Creating /etc/oratab file...Entries will be added to the /etc/oratab file as needed byDatabase Configuration Assistant when a database is createdFinished running generic part of root script.Now product-specific root actions will be performed.Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_paramsCreating trace directoryUser ignored Prerequisites during installationInstalling Trace File AnalyzerOLR initialization - successful  root wallet  root wallet cert  root cert export  peer wallet  profile reader wallet  pa wallet  peer wallet keys  pa wallet keys  peer cert request  pa cert request  peer cert  pa cert  peer root cert TP  profile reader root cert TP  pa root cert TP  peer pa cert TP  pa peer cert TP  profile reader pa cert TP  profile reader peer cert TP  peer user cert  pa user certAdding Clusterware entries to inittab**ohasd failed to start** ##出现该提示需要重启ohas.service服务Failed to start the Clusterware. Last 20 lines of the alert log follow: 2020-01-10 08:16:18.019: [client(23496)]CRS-2101:The OLR was formatted using version 3.CRS-2672: Attempting to start 'ora.mdnsd' on 'mydb1'CRS-2676: Start of 'ora.mdnsd' on 'mydb1' succeededCRS-2672: Attempting to start 'ora.gpnpd' on 'mydb1'CRS-2676: Start of 'ora.gpnpd' on 'mydb1' succeededCRS-2672: Attempting to start 'ora.cssdmonitor' on 'mydb1'CRS-2672: Attempting to start 'ora.gipcd' on 'mydb1'CRS-2676: Start of 'ora.cssdmonitor' on 'mydb1' succeededCRS-2676: Start of 'ora.gipcd' on 'mydb1' succeededCRS-2672: Attempting to start 'ora.cssd' on 'mydb1'CRS-2672: Attempting to start 'ora.diskmon' on 'mydb1'CRS-2676: Start of 'ora.diskmon' on 'mydb1' succeededCRS-2676: Start of 'ora.cssd' on 'mydb1' succeeded已成功创建并启动 ASM。已成功创建磁盘组OCRDG。clscfg: -install mode specifiedSuccessfully accumulated necessary OCR keys.Creating OCR keys for user 'root', privgrp 'root'..Operation successful.CRS-4256: Updating the profileSuccessful addition of voting disk 992a298111ba4fb8bf16c75cdd232ca8.Successfully replaced voting disk group with +OCRDG.CRS-4256: Updating the profileCRS-4266: Voting file(s) successfully replaced##  STATEFile Universal IdFile Name Disk group--  ------------------------------- --------- 1. ONLINE   992a298111ba4fb8bf16c75cdd232ca8 (/dev/mapper/asm_ocr1p1) [OCRDG]Located 1 voting disk(s).sh: /bin/netstat: 没有那个文件或目录CRS-2672: Attempting to start 'ora.asm' on 'mydb1'CRS-2676: Start of 'ora.asm' on 'mydb1' succeededCRS-2672: Attempting to start 'ora.OCRDG.dg' on 'mydb1'CRS-2676: Start of 'ora.OCRDG.dg' on 'mydb1' succeeded软件包准备中...cvuqdisk-1.0.9-1.x86_64Configure Oracle Grid Infrastructure for a Cluster ... succeeded2节点：[root@mydb2 etc]# /u01/app/oraInventory/orainstRoot.shChanging permissions of /u01/app/oraInventory.Adding read,write permissions for group.Removing read,write,execute permissions for world.Changing groupname of /u01/app/oraInventory to oinstall.The execution of the script is complete.[root@mydb2 etc]# [root@mydb2 etc]# cd[root@mydb2 ~]# /u01/app/11.2.0/grid/root.shPerforming root user operation for Oracle 11g The following environment variables are set as:ORACLE_OWNER= gridORACLE_HOME=  /u01/app/11.2.0/gridEnter the full pathname of the local bin directory: [/usr/local/bin]:    Copying dbhome to /usr/local/bin ...   Copying oraenv to /usr/local/bin ...   Copying coraenv to /usr/local/bin ...Creating /etc/oratab file...Entries will be added to the /etc/oratab file as needed byDatabase Configuration Assistant when a database is createdFinished running generic part of root script.Now product-specific root actions will be performed.Using configuration parameter file: /u01/app/11.2.0/grid/crs/install/crsconfig_paramsCreating trace directoryUser ignored Prerequisites during installationInstalling Trace File AnalyzerOLR initialization - successfulAdding Clusterware entries to inittab**ohasd failed to start** ##出现该提示需要重启ohas.service服务Failed to start the Clusterware. Last 20 lines of the alert log follow: 2020-01-10 08:27:01.458: [client(21808)]CRS-2101:The OLR was formatted using version 3.CRS-4402: The CSS daemon was started in exclusive mode but found an active CSS daemon on node mydb1, number 1, and is terminatingAn active cluster was found during exclusive startup, restarting to join the clustersh: /bin/netstat: 没有那个文件或目录软件包准备中...cvuqdisk-1.0.9-1.x86_64Configure Oracle Grid Infrastructure for a Cluster ... succeeded

22、报错忽略

1）Configure Oracle Grid Infrastructure for aCluster2)Oracle Cluster Verification Utility

23、数据库软件安装检查忽略项

1）Package:pdksh-5.2.142)Task resolv.conf Integrity3)Single Client Access Name(SCAN)

23、安装报错

提示：Error in invoking target 'agent nmhs'of makefile '/u01/app/oracle/product/11.2.0/db_home/sysman/lib/ins_emagent.mk'.解决方法如下：cd $ORACLE_HOME/sysman/libcp ins_emagent.mk ins_emagent.mk.bakvi ins_emagent.mk/NMECTL 快速定位，修改如下：$(MK_EMAGENT_NMECTL) -lnnz11说明：第一个是字母l   后面两个是数字1然后点击 Retry

24、root用户下，在两个节点分别执行root.sh

/u01/app/oracle/product/11.2.0/db_home/root.sh[root@mydb2 ~]# /u01/app/oracle/product/11.2.0/db_home/root.shPerforming root user operation for Oracle 11g The following environment variables are set as:ORACLE_OWNER= oracleORACLE_HOME=  /u01/app/oracle/product/11.2.0/db_homeEnter the full pathname of the local bin directory: [/usr/local/bin]: The contents of "dbhome" have not changed. No need to overwrite.The contents of "oraenv" have not changed. No need to overwrite.The contents of "coraenv" have not changed. No need to overwrite.Entries will be added to the /etc/oratab file as needed byDatabase Configuration Assistant when a database is createdFinished running generic part of root script.Now product-specific root actions will be performed.Finished product-specific root actions.

25、使用asmca配置实例安装所需磁盘

REDODG
DATADG
ARCHDG

26、使用dbca创建实例

27、配置hugepage，大页内存

使用大内存页有哪些好处：

1.   减少页表(Page Table）大小。每一个Huge Page，对应的是连续的2MB物理内存，这样12GB的物理内存只需要48KB的Page Table，与原来的24MB相比减少很多。2.   Huge Page内存只能锁定在物理内存中，不能被交换到交换区。这样避免了交换引起的性能影响。3.   由于页表数量的减少，使得CPU中的TLB（可理解为CPU对页表的CACHE）的命中率大大提高。4.   针对Huge Page的页表，在各进程之间可以共享，也降低了Page Table的大小。实际上这里可以反映出Linux在分页处理机制上的缺陷。而其他操作系统，比如AIX，对于共享内存段这样的内存，进程共享相同的页表，避免了Linux的这种问题。像笔者维护的一套系统，连接数平常都是5000以上，实例的SGA在60GB左右，要是按Linux的分页处理方式，系统中大部分内存都会被页表给用掉。

实施步骤如下：

1）检查/proc/meminfogrep -i hugepage /proc/meminfo2)计算HugePages_Total大小，使用hugepages_settings.sh脚本进行计算：#!/bin/bashKERN=`uname -r | awk -F. '{ printf("%d.%d\n",$1,$2); }'`# Find out the HugePage sizeHPG_SZ=`grep Hugepagesize /proc/meminfo | awk '{print $2}'`# Start from 1 pages to be on the safe side and guarantee 1 free HugePageNUM_PG=1# Cumulative number of pages required to handle the running shared memory segmentsfor SEG_BYTES in `ipcs -m | awk '{print $5}' | grep "[0-9][0-9]*"`doMIN_PG=`echo "$SEG_BYTES/($HPG_SZ*1024)" | bc -q`if [ $MIN_PG -gt 0 ]; thenNUM_PG=`echo "$NUM_PG+$MIN_PG+1" | bc -q`fidone# Finish with resultscase $KERN in'2.4') HUGETLB_POOL=`echo "$NUM_PG*$HPG_SZ/1024" | bc -q`;echo "Recommended setting: vm.hugetlb_pool = $HUGETLB_POOL" ;;'2.6') MEM_LOCK=`echo "$NUM_PG*$HPG_SZ" | bc -q`;echo "Recommended setting within the kernel boot command line(/etc/sysctl.conf): vm.nr_hugepages = $NUM_PG"echo "Recommended setting within /etc/security/limits.d/99-grid-oracle-limits.conf: oracle soft memlock $MEM_LOCK"echo "Recommended setting within /etc/security/limits.d/99-grid-oracle-limits.conf: oracle hard memlock $MEM_LOCK" ;;'3.10') MEM_LOCK=`echo "$NUM_PG*$HPG_SZ" | bc -q`;echo "Recommended setting within the kernel boot command line(/etc/sysctl.conf): vm.nr_hugepages =$NUM_PG"echo "Recommended setting within /etc/security/limits.d/99-grid-oracle-limits.conf: oracle soft memlock $MEM_LOCK"echo "Recommended setting within /etc/security/limits.d/99-grid-oracle-limits.conf: oracle hard memlock $MEM_LOCK" ;;*) echo "Unrecognized kernel version $KERN. Exiting." ;;esac#end ----3）修改/etc/sysctl.conf文件，增加如下行，根据上步计算的hugepages大小：vm.nr_hugepages=92184)生效sysctl -p5）修改/etc/security/limits.d/99-grid-oracle-limits.conf，增加如下,设定oracle用户可以锁定内存的大小 ，以KB为单位，可以设置为具体值，也可设置为unlimited:oracle  soft  memlock unlimitedoracle  hard  memlock unlimited6）重新启动实例

28、修改本地和集群监听端口号为11521

1）修改前确认：[grid@mydb1 ~]$ srvctl config listenerName: LISTENERNetwork: 1, Owner: gridHome: End points: TCP:1521[grid@mydb1 ~]$ srvctl config scan_listenerSCAN Listener LISTENER_SCAN1 exists. Port: TCP:15212）在集群下修改listener、scan_listener端口为11521,在一个节点执行srvctl modify listener -l LISTENER -p "TCP:11521"srvctl modify scan_listener -p 115213）修改local_listener，进入sqlplus;alter system set local_listener = '(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.205)(PORT = 11521))' scope=both sid='racdb1';alter system set local_listener = '(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.0.206)(PORT = 11521))' scope=both sid='racdb2';4)修改remote_listeneralter system set remote_listener='racdb-scan:11521' scope=both;5)在第1个节点关闭本地监听，修改listener.ora、endpoints_listener.ora、tnsnames.ora，并重启本地监听srvctl stop listener -l LISTENER -n mydb1cd $ORACLE_HOME/network/admin--修改1521为11521vi endpoints_listener.oravi listener.orasrvctl start listener -l LISTENER -n mydb1srvctl status listener -l LISTENERsrvctl config listener6)在第2个节点关闭本地监听，修改listener.ora、endpoints_listener.ora、tnsnames.ora，并重启本地监听srvctl stop listener -l LISTENER -n mydb2cd $ORACLE_HOME/network/admin--修改1521为11521vi endpoints_listener.oravi listener.orasrvctl start listener -l LISTENER -n mydb2srvctl status listener -l LISTENERsrvctl config listener7)修改ASM 监听端口 (如果不修改asm监听端口，lsnrctl status查看监听状态时不会显示asm服务监听状态）su - gridsqlplus / as sysdbaalter system set local_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.205)(PORT=11521))' scope=both sid='+ASM1';alter system set local_listener='(ADDRESS=(PROTOCOL=TCP)(HOST=192.168.0.206)(PORT=11521))' scope=both sid='+ASM2';lsnrctl status

29、asm参数优化

ASM 磁盘组使用的是默认的 1M AU 大小，对于大型数据库，这会造成较多的内存占用，同时对性能略微有些影响，建议对于新增的用于放置数据文件的 ASM 磁盘组，适当调大 AU大小，比如 4M 或 8M（2 的幂值）。根据电信运营商的实际经验，建议设置  AU 为 为  4m 。

30、数据库参数修改推荐

Alter system set resource_manager_plan='FORCE:' scope =spfile sid='*';Alter system set audit_trail=none scope=spfile sid='*';alter system set undo_retention=10800 scope=spfile sid='*';alter system set session_cached_cursors=200 scope=spfile sid='*';alter system set db_files=2000 scope=spfile sid='*';alter system set max_shared_servers=0 scope=spfile sid='*';alter system set sec_max_failed_login_attempts=100 scope=spfile sid='*';alter system set deferred_segment_creation=false scope=spfile sid='*';alter system set parallel_force_local=true scope=spfile sid='*';alter system set parallel_max_servers=32 scope=spfile sid='*';alter system set sec_case_sensitive_logon=false scope=spfile sid='*';alter system set open_cursors=3000 scope=spfile sid='*';alter system set open_links =40 scope=spfile sid='*';alter system set open_links_per_instance =40 scope=spfile sid='*';alter system set db_cache_advice=off scope=spfile sid='*';alter system set "_b_tree_bitmap_plans"=false scope=spfile sid='*';alter system set "_gc_policy_time"=0 scope=spfile sid='*';alter system set "_gc_defer_time"=3 scope=spfile sid='*';alter system set "_lm_tickets"=5000 scope=spfile sid='*';alter system set "_optimizer_use_feedback"=false sid='*';alter system set "_undo_autotune"=false scope=both sid='*';alter system set "_bloom_filter_enabled"=FALSE scope=spfile sid='*';alter system set "_cleanup_rollback_entries"=2000 scope=spfile sid='*';alter system set "_px_use_large_pool"=true scope=spfile sid='*';alter system set "_optimizer_extended_cursor_sharing_rel"=NONE scope=spfilesid='*';alter system set "_optimizer_extended_cursor_sharing"=NONE scope=spfile sid='*';alter system set "_optimizer_adaptive_cursor_sharing"=false scope=spfilesid='*';alter system set "_optimizer_mjc_enabled"=FALSE scope=spfile sid='*';alter system set "_sort_elimination_cost_ratio"=1 scope=spfile sid='*';alter system set "_partition_large_extents"=FALSE scope=spfile sid='*';alter system set "_index_partition_large_extents"=FALSE scope=spfile sid='*';alter system set "_clusterwide_global_transactions"=FALSE scope=spfile sid='*';alter system set "_part_access_version_by_number"=FALSE scope=spfile; alter system set "_partition_large_extents"=FALSE scope=spfile;alter system set "_sort_elimination_cost_ratio"=1 scope=spfile;alter system set "_use_adaptive_log_file_sync"=FALSE scope=spfile;alter system set "_lm_sync_timeout"=1200 scope=spfile;alter system set "_ksmg_granule_size"=134217728 scope=spfile;alter system set "_optimizer_cartesian_enabled"=false scope=spfile;alter system set "_external_scn_logging_threshold_seconds"=3600 scope=spfile;alter system set "_datafile_write_errors_crash_instance"=false scope=spfile;alter system set event='28401 TRACE NAME CONTEXT FOREVER, LEVEL 1:60025 trace namecontext forever:10949 trace name context forever,level 1' sid='*' scope=spfile;

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