[oracle@localhost /]$ rpm -qa|grep preinstall
oracle-rdbms-server-12cR1-preinstall-1.0-4.el7.x86_64
[oracle@localhost /]$
[oracle@localhost /]$ cat /etc/sysctl.conf
# System default settings live in /usr/lib/sysctl.d/00-system.conf.
# To override those settings, enter new settings here, or in an /etc/sysctl.d/<name>.conf file
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
# oracle-rdbms-server-12cR1-preinstall setting for fs.file-max is 6815744
fs.file-max = 6815744
# oracle-rdbms-server-12cR1-preinstall setting for kernel.sem is '250 32000 100 128'
kernel.sem = 250 32000 100 128
# oracle-rdbms-server-12cR1-preinstall setting for kernel.shmmni is 4096
kernel.shmmni = 4096
# oracle-rdbms-server-12cR1-preinstall setting for kernel.shmall is 1073741824 on x86_64
kernel.shmall = 1073741824
# oracle-rdbms-server-12cR1-preinstall setting for kernel.shmmax is 4,398,046,511,104 on x86_64
kernel.shmmax = 4398046511104
# oracle-rdbms-server-12cR1-preinstall setting for kernel.panic_on_oops is 1 per Orabug 19212317
kernel.panic_on_oops = 1
# oracle-rdbms-server-12cR1-preinstall setting for net.core.rmem_default is 262144
net.core.rmem_default = 262144
# oracle-rdbms-server-12cR1-preinstall setting for net.core.rmem_max is 4194304
net.core.rmem_max = 4194304
# oracle-rdbms-server-12cR1-preinstall setting for net.core.wmem_default is 262144
net.core.wmem_default = 262144
# oracle-rdbms-server-12cR1-preinstall setting for net.core.wmem_max is 1048576
net.core.wmem_max = 1048576
# oracle-rdbms-server-12cR1-preinstall setting for net.ipv4.conf.all.rp_filter is 2
net.ipv4.conf.all.rp_filter = 2
# oracle-rdbms-server-12cR1-preinstall setting for net.ipv4.conf.default.rp_filter is 2
net.ipv4.conf.default.rp_filter = 2
# oracle-rdbms-server-12cR1-preinstall setting for fs.aio-max-nr is 1048576
fs.aio-max-nr = 1048576
# oracle-rdbms-server-12cR1-preinstall setting for net.ipv4.ip_local_port_range is 9000 65500
net.ipv4.ip_local_port_range = 9000 65500
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