Linux 下数据库oracle出现ORA-27102错误的解决办法

三、查看系统参数，发现kernel.shmmax=16777216 太小，于是将其设置为2G
[oracle@CCN-BJ-4-573 dbs]$ more /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and

# sysctl.conf(5) for more details.
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename.
# Useful for debugging multi-threaded applications.
kernel.core_uses_pid = 1
# add for squid program
# Increase the tcp-time-wait buckets pool size
net.ipv4.tcp_max_tw_buckets = 1800000
net.ipv4.tcp_max_syn_backlog = 8192
#2nd try
kernel.msgmnb=8192
kernel.msgmni=40
kernel.msgmax=8192
kernel.shmall=2097152
kernel.shmmni=32
kernel.shmmax=16777216
# end of squid

~
[oracle@CCN-BJ-4-573 dbs]$ exit
logout

[root@CCN-BJ-4-573 ~]# vi /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux
#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename.
# Useful for debugging multi-threaded applications.
kernel.core_uses_pid = 1
# add for squid program
# Increase the tcp-time-wait buckets pool size
net.ipv4.tcp_max_tw_buckets = 1800000
net.ipv4.tcp_max_syn_backlog = 8192
#2nd try
kernel.msgmnb=8192
kernel.msgmni=40
kernel.msgmax=8192
kernel.shmall=2097152
kernel.shmmni=32
kernel.shmmax=2147483648
#kernel.shmmax=16777216
# end of squid
~
~

~
"/etc/sysctl.conf" 35L, 918C written

使参数生效
[root@CCN-BJ-4-573 ~]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_max_tw_buckets = 1800000
net.ipv4.tcp_max_syn_backlog = 8192
kernel.msgmnb = 8192
kernel.msgmni = 40
kernel.msgmax = 8192
kernel.shmall = 2097152
kernel.shmmni = 32
kernel.shmmax = 2147483648
最后数据库成功启动。