这个是内存参数设置的大于操作系统里面限制的大小了。可以尝试1.把sga改小再重启   2.修改/etc/sysctl.conf文件，修改参数，如

# Controls the maximum size of a message, in bytes

kernel.msgmnb = 65536

# Controls the default maxmimum size of a mesage queue

kernel.msgmax = 65536

# Controls the maximum shared segment size, in bytes

kernel.shmmax = 68719476736

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

kernel.shmall = 268435456

kernel.shmmni = 4096