ipcrm使用

在linux上有的时候无法释放oracle的共享内存，导致在启动oracle的时候会报ora-27123

可以使用 ipcrm清除

ipcrm的使用

-M shmkey

removes the shared memory segment created with shmkey after the last detach is performed.

-m shmid

removes the shared memory segment identified by shmid after the last detach is performed.

-Q msgkey

removes the message queue created with msgkey.

-q msgid

removes the message queue identified by msgid.

-S semkey

removes the semaphore created with semkey.

-s semid

removes the semaphore identified by semid.

先使用ipcs [-m|-q|-s]查看有哪些贡献内存

-m 输出有关共享内存(shared memory)的信息

-q 输出有关信息队列(message queue)的信息

-s 输出有关“遮断器”(semaphore)的信息

干掉共享内存使用

ipcs -m|grep oracle|awk ‘{print $2}’|xargs ipcrm shm