参数详解
SHMMAX: Defines the maximum size (in bytes) of a single shared memory segment allowed by the kernel.
定义单个共享内存段的最大值
SHMALL: Defines the total amount of shared memory (in pages 4k) that can be used on the system at one time.
定义最大共享内存页数(Linux默认4k内存页),共享内存段的大小是共享内存页大小的整数倍
SHMMNI:共享内存段段的最大数量,默认4096足够
In an Oracle RDBMS application, thi