centos6.2 X64    oracle10.2  記憶體24G

sql>alter system set sga_max_size=8192M scope=spfile;

sql>alter system set sga_target=8192M scope=spfile;

sql>shutdown immediate;

sql>startup

ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device

經查，發現是一個引數的設定的不對/etc/sysctl.conf的shmall

kernel.shmall = 6291456 ---記憶體24G
kernel.shmall = 8388608    ---記憶體32G我改的kernel.shmall = 41943040  ，結果好了，這樣可以會留下什麼後遺症