dbstart后出现的问题！

银色战车

$ dbstart

Oracle Server Manager Release 2.3.4.0.0 - Production

Copyright (c) Oracle Corporation 1994, 1995. All rights reserved.

Oracle7 Server Release 7.3.4.0.0 - Production
PL/SQL Release 2.3.4.0.0 - Production

SVRMGR>; Connected to an idle instance.
SVRMGR>; ORA-07336: smsmat: shmget error, unable to get a shared memory segment.
SCO System V/386 Error: 17: File exists
Additional information: 4
SVRMGR>;
Server Manager complete.

Database "ora734" warm started.
$

这个错误直接导致不能进入sqlplus
大家帮忙指点啊…………

银色战车

改db_block_buffers=*****后解决
但是db_block_buffers是什么玩意？？？？

daniel_w

看字面就能解释出来了
数据缓冲区
是不是设小了。

sshd

i assume you reduced the value of db_block_buffers
you should tune the OS to allow more shared memory

icesummit

db_block_buffers 是数据库非常关键的一个参数。默认是2k，但是对于一般的数据库应用，为了提高效率，都要提高这个数值。4k,8k,16k..

woson

原帖由 "银色战车" 发表：
$ dbstart

Oracle Server Manager Release 2.3.4.0.0 - Production

Copyright (c) Oracle Corporation 1994, 1995. All rights reserved.

Oracle7 Server Release 7.3.4.0.0 - Production
PL/SQL Release ..........

把你的show parameter shared结果贴一下.