autovacuum launcher started LOG:database system is ready to accept connections 得出的结论是，所有的后台进程，恐怕其拥有的指向共享内存的指针，其中的地址完全相同。也就是它们都指向一个共同的共享内存。结束 本文转自健哥的数据...
} 其实 ShmemIndex 就是对共享内存的指针：/*ShmemInitHash-Create and initialize,or attach to,a*shared memory hash table.*We assume caller is doing some kind of synchronization*so that two processes don't try to create/...
