Saturday, 3 April 2021

Pre oracle and grid Requestors setting on Suse12 sp4 for RAC 12.1.0.2.0

 Pre oracle and grid  Requestors setting on Suse12 sp4 for RAC 12.1.0.2.0

  • Add the following Kernel parameters in /etc/sysctl.conf file.

vi /etc/sysctl.conf

####

#

# /etc/sysctl.conf is meant for local sysctl settings

#

# sysctl reads settings from the following locations:

#   /boot/sysctl.conf-<kernelversion>

#   /lib/sysctl.d/*.conf

#   /usr/lib/sysctl.d/*.conf

#   /usr/local/lib/sysctl.d/*.conf

#   /etc/sysctl.d/*.conf

#   /run/sysctl.d/*.conf

#   /etc/sysctl.conf

#

# To disable or override a distribution provided file just place a

# file with the same name in /etc/sysctl.d/

#

# See sysctl.conf(5), sysctl.d(5) and sysctl(8) for more information

#

####


# Disable response to broadcasts.

# You don't want yourself becoming a Smurf amplifier.

net.ipv4.icmp_echo_ignore_broadcasts = 1

# enable route verification on all interfaces

net.ipv4.conf.all.rp_filter = 1

# enable ipV6 forwarding

#net.ipv6.conf.all.forwarding = 1

# increase the number of possible inotify(7) watches

fs.inotify.max_user_watches = 65536

# avoid deleting secondary IPs on deleting the primary IP

net.ipv4.conf.default.promote_secondaries = 1

net.ipv4.conf.all.promote_secondaries = 1

fs.aio-max-nr = 1048576

fs.file-max = 6815744

kernel.shmall = 52920661

kernel.shmmax = 270953783296

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 262144

net.core.rmem_max = 4194304

net.core.wmem_default = 262144

net.core.wmem_max = 1048576



# net.ipv6.conf.all.disable_ipv6 = 1

# Recommended value for kernel.panic_on_oops

kernel.panic_on_oops = 1


  • load them by running the following command:

sysctl -p

  • set the resource limits in /etc/security/limits.conf file.

vi /etc/security/limits.conf

# /etc/security/limits.conf

#

#Each line describes a limit for a user in the form:

#

#<domain>        <type>  <item>  <value>

#

#Where:

#<domain> can be:

#        - a user name

#        - a group name, with @group syntax

#        - the wildcard *, for default entry

#        - the wildcard %, can be also used with %group syntax,

#                 for maxlogin limit

#

#<type> can have the two values:

#        - "soft" for enforcing the soft limits

#        - "hard" for enforcing hard limits

#

#<item> can be one of the following:

#        - core - limits the core file size (KB)

#        - data - max data size (KB)

#        - fsize - maximum filesize (KB)

#        - memlock - max locked-in-memory address space (KB)

#        - nofile - max number of open files

#        - rss - max resident set size (KB)

#        - stack - max stack size (KB)

#        - cpu - max CPU time (MIN)

#        - nproc - max number of processes

#        - as - address space limit (KB)

#        - maxlogins - max number of logins for this user

#        - maxsyslogins - max number of logins on the system

#        - priority - the priority to run user process with

#        - locks - max number of file locks the user can hold

#        - sigpending - max number of pending signals

#        - msgqueue - max memory used by POSIX message queues (bytes)

#        - nice - max nice priority allowed to raise to values: [-20, 19]

#        - rtprio - max realtime priority

#

#<domain>      <type>  <item>         <value>

#


#*               soft    core            0

#*               hard    rss             10000

#@student        hard    nproc           20

#@faculty        soft    nproc           20

#@faculty        hard    nproc           50

#ftp             hard    nproc           0

#@student        -       maxlogins       4


# End of file


oracle soft nproc 24756

oracle hard nproc 16384

oracle soft nofile 1024

oracle hard nofile 65536

oracle soft stack 10240

oracle hard stack 32768

oracle soft memlock unlimited

oracle hard memlock unlimited

grid soft nproc 24756

grid hard nproc 16384

grid soft nofile 1024

grid hard nofile 65536

grid soft stack 10240

grid hard stack 32768


  • Add the following in /etc/pam.d/login file.

vi /etc/pam.d/login

#%PAM-1.0

auth      requisite  pam_nologin.so

auth      include    common-auth

account   include    common-account

password  include    common-password

session   required   pam_loginuid.so

session   include    common-session

#session  optional   pam_lastlog.so nowtmp showfailed

session   optional   pam_mail.so standard

oracle@sgdcplm02:~>



  • Create oinstalldba and oper groups.

groupadd -g 54321 oinstall

groupadd  -g 503 dba

groupadd  -g 504 oper

groupadd -g 54329 asmadmin

groupadd -g 54327 asmdba

groupadd -g 54324 backupdba

groupadd -g 54325 dgdba

groupadd -g 54326 kmdba

groupadd asmadmin

groupadd asmdba


  •  Create oracle user and add it to following groups


useradd -u 502 -g oinstall -G dba,asmadmin,oper -s /bin/bash -m oracle

useradd -u 54323 -g oinstall -G asmadmin,asmdba,oper,asmdba  -s /bin/bash -m grid


  • Example - If we wants to add group on existing user

usermod -a -G asmdba oracle

 passwd oracle

 passwd grid

grid@sg:~> id

uid=54323(grid) gid=54321(oinstall) groups=54321(oinstall),503(dba),54327(asmdba),54329(asmadmin)

grid@sg:~> id oracle

uid=502(oracle) gid=54321(oinstall) groups=54321(oinstall),503(dba),504(oper),54324(backupdba),54325(dgdba),54326(kmdba),54327(asmdba),54330(beoper)

  • Modify .bash_profile for oracle user.  directory : /home/oracle

 vi .bash_profile

# .bash_profile


# Get the aliases and functions

if [ -f ~/.bashrc ]; then

        . ~/.bashrc

fi

umask 022

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=/u01/app/oracle/product/12.1.0/dbhome_2

export ORACLE_HOME_LISTNER=$ORACLE_HOME/network/admin

export TNS_ADMIN=$ORACLE_HOME/network/admin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:$LD_LIBRARY_PATH

export PATH=$PATH:$ORACLE_HOME/bin

export ORACLE_SID=smrrac1

#NLS_DATE_FORMAT=Mon DD YYYY HH24:MI:SS; export NLS_DATE_FORMAT

ORATAB=/etc/oratab;export ORATAB


oracle@sgdcplm02:~>


  • Modify .bash_profile for gird user. Directory : /home/grid

 vi .bash_profile

# .bash_profile

# OS User: grid


if

[ -f ~/.bashrc ]; then

. ~/.bashrc

fi

ORACLE_SID=+ASM1; export ORACLE_SID

ORACLE_BASE=/u01/app/grid; export ORACLE_BASE

# it must not be under the ORACLE_BASE

ORACLE_HOME=/u01/app/12.1.0/grid; export ORACLE_HOME

ORACLE_TERM=xterm; export ORACLE_TERM

TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN

PATH=.:${PATH}:$ORACLE_HOME/bin

PATH=${PATH}:/usr/bin:/bin:/usr/local/bin

export PATH

export TEMP=/tmp

export TMPDIR=/tmp

umask 022


  • Some oracle packages installation 

zypper install libstdc++46-devel libstdc++33 libstdc++33-devel libelf-devel gcc-c++ libaio-devel sysstat unixODBC unixODBC-devel xdpyinfo


  • Directory 

mkdir -p /u01/app/oracle/product
chown -R oracle:oinstall /u01
chmod -R 775 /u01
mkdir -p /u01/app/grid
mkdir -p /u01/app/12.1.0/grid
chown -R grid:oinstall /u01/app/grid
chown -R grid:oinstall /u01/app/12.1.0/grid
chmod -R 775 /u01



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