Oracle 11g使用dbca安装数据库时报错"SGA size can not be greater than maximum shared memory segment size、ORA-27102"

报错原因：Linux系统内核参数设置有误

解决方法：更改系统内核参数

[root@ZABBIXSERVER ~]# vim /etc/sysctl.conf

# Controls the maximum number of shared memory segments, in pages

kernel.shmall = 4294967296

#kernel.shmmax=2147483648

#kernel.shmmni=4096

#kernel.shmall=2097152

#kernel.sem=250 32000 100 128

#fs.file-max = 6553600

#net.ipv4.ip_local_port_range=1024 65000

#net.core.rmem_default = 262144

#net.core.rmem_max = 1048576

#net.core.wmem_default = 262144

#net.core.wmem_max = 1048576

fs.aio-max-nr = 1048576

fs.file-max = 6815744

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 4194304

net.core.rmem_max = 4194304

net.core.wmem_default = 262144

net.core.wmem_max = 1048576

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