https://www.oracle.com/linux/downloads/linux-asmlib-rhel7-downloads.html https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/kmod-oracleasm-2.0.8-28.0.1.el7.x86_64.rpm
yum install sg3_utils -y
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/tdprc/preparing-your-cluster.html
/usr/sbin/groupadd -g 1000 oinstall /usr/sbin/groupadd -g 1001 dba /usr/sbin/groupadd -g 1002 asmdba /usr/sbin/useradd -u 1100 –g oinstall -G dba,asmdba -d /home/grid -r grid /usr/sbin/useradd -u 1200 –g oinstall -G dba,asmdba -d /home/oracle -r oracle # grid ORACLE_HOME=/u01/app/12.1.0/grid; export ORACLE_HOME mkdir -p /u01/app/12.1.0/grid chown -R grid:oinstall /u01/app/12.1.0/grid # db mkdir -p /u01/app/oracle/ chown -R oracle:oinstall /u01/app/oracle/ chmod -R 775 /u01/app/oracle/
You can use an Oracle home directory created in the local file system, for example, /u01/app/oracle/product/12.1.0/dbhome_1. The same directory must exist on every node in the cluster. You do not have to create these directories before installation. By default, the installer suggests a subdirectory of the Oracle base directory for the Oracle home.
ntp must use -x option (don't go back in time)
/etc/ntp.conf
slewalways yes
mkdir /asmfs dd if=/dev/zero of=/asmfs/disk1 bs=1024k count=30000 dd if=/dev/zero of=/asmfs/disk2 bs=1024k count=30000 dd if=/dev/zero of=/asmfs/disk3 bs=1024k count=30000 chown -R grid:asmdba /asmfs chmod -R 660 /asmfs
/etc/init.d/loopback
#!/bin/bash # # chkconfig: 2345 18 18 # description: Loopback case "$1" in start) /sbin/losetup /dev/loop1 /asmfs/disk1 /sbin/losetup /dev/loop2 /asmfs/disk2 /sbin/losetup /dev/loop3 /asmfs/disk3 raw /dev/raw/raw1 /dev/loop1 raw /dev/raw/raw2 /dev/loop2 raw /dev/raw/raw3 /dev/loop3 chown -R oracle:oinstall /dev/raw/* touch /var/lock/subsys/loopback ;; stop) /sbin/losetup -d /dev/loop1 /sbin/losetup -d /dev/loop2 /sbin/losetup -d /dev/loop3 ;; esac
chown -R oracle:oinstall /dev/raw/* fdisk create partition oracleasm createdisk < disk label > /dev/mapper/< alias >< partition >
SID:/u01/app/oracle/product/11.2.0/dbhome_1:Y +ASM:/u01/app/oracle/product/11.2.0/grid:N
/etc/init.d/oracleasm scandisks /etc/init.d/oracleasm listdisks
/etc/init.d/oracleasm listdisks /etc/init.d/oracleasm createdisk VOLx /dev/raw/raw2 ALTER DISKGROUP DATA ADD DISK 'ORAPL:VOLx';
# User specific environment and startup programs PATH=$PATH:$HOME/bin:/opt/oracle/product/12.1.0/dbhome_1/bin export PATH export ORACLE_HOME=/opt/oracle/product/12.1.0/dbhome_1 export ORACLE_SID=ORAPL
ALTER SYSTEM SET AUDIT_TRAIL=NONE SCOPE=SPFILE;
Use the 512B sector size when exporting volumes to initiators. If you need to export LUNs with a 4KB sector size, use Oracle or third-party-provided ASMLIB support packages.