help! Red Hat Enterprise Linux ES 3下安装ORACLE8.1.7后

declare -x EDITOR="vi"
declare -x GCC_EXEC_PREFIX="/usr/i386-glibc21-linux/lib/gcc-lib/"
declare -x G_BROKEN_FILENAMES="1"
declare -x HISTSIZE="1000"
declare -x HOME="/home/oracle"
declare -x HOSTNAME="jjxd"
declare -x INPUTRC="/etc/inputrc"
declare -x JAVA_HOME="/usr/local/java"
declare -x LANG="en_US.UTF-8"
declare -x LD_ASSUME_KERNEL="2.4"
declare -x LD_LIBRARY_PATH="/oracle/product/8.1.7/lib:/lib:/usr/lib:/usr/local/lib"
declare -x LESSOPEN="|/usr/bin/lesspipe.sh %s"
declare -x LOGNAME="oracle"
declare -x LS_COLORS="no=00:fi=00:di=01;34:ln=01;36:pi=40;33:so=01;35:bd=40;33;01:cd=40;33;01r=01;05;37;41:mi=01;05;37;41:ex=01;32:*.cmd=01;32:*.exe=01;32:*.com=01;32:*.btm=01;32:*.bat=01;32:*.sh=01;32:*.csh=01;32:*.tar=01;31:*.tgz=01;31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.gz=01;31:*.bz2=01;31:*.bz=01;31:*.tz=01;31:*.rpm=01;31:*.cpio=01;31:*.jpg=01;35:*.gif=01;35:*.bmp=01;35:*.xbm=01;35:*.xpm=01;35:*.png=01;35:*.tif=01;35:"
declare -x MAIL="/var/spool/mail/oracle"
declare -x NLS_LANG="AMERICAN_AMERICA.WE8ISO8859P1"
declare -x OLDPWD
declare -x ORACLE_BASE="/oracle"
declare -x ORACLE_HOME="/oracle/product/8.1.7"
declare -x ORACLE_OWNER="oracle"
declare -x ORACLE_SID="orcl"
declare -x ORACLE_TERM="xterm"
declare -x ORA_NLS33="/oracle/product/8.1.7/ocommon/nls/admin/data"
declare -x PATH="/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/home/oracle/bin:/oracle/product/8.1.7/bin:/opt/bin:/bin:/usr/bin:/usr/local/bin:/usr/sbin:/usr/X11R6/bin:/usr/local/java/bin:."
declare -x PWD="/home/oracle"
declare -x SHELL="/bin/bash"
declare -x SHLVL="1"
declare -x SSH_ASKPASS="/usr/libexec/openssh/gnome-ssh-askpass"
declare -x SSH_CLIENT="192.168.0.111 1429 22"
declare -x SSH_CONNECTION="192.168.0.111 1429 192.168.0.2 22"
declare -x SSH_TTY="/dev/pts/0"
declare -x TERM="xterm"
declare -x TMPDIR="/tmp"
declare -x TNS_ADMIN="/oracle/product/8.1.7/network/admin"
declare -x USER="oracle"
.bash_profile executed
[oracle@jjxd oracle]$ sqlplus "system/manager"

SQL*Plus: Release 8.1.7.0.0 - Production on Fri Apr 23 21:09:40 2004

(c) Copyright 2000 Oracle Corporation.  All rights reserved.

ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory


Enter user-name:  
ERROR:
ORA-01017: invalid username/password; logon denied


Enter user-name:
ERROR:
ORA-01017: invalid username/password; logon denied


SP2-0157: unable to CONNECT to ORACLE after 3 attempts, exiting SQL*Plus
[oracle@jjxd oracle]$ dbstart
Database "ORCL" already started.

Database "ORCL" possibly left running when system went down (system crash?).
Notify Database Administrator.

Oracle Server Manager Release 3.1.7.0.0 - Production

Copyright (c) 1997, 1999, Oracle Corporation.  All Rights Reserved.

Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
JServer Release 8.1.7.0.1 - Production

SVRMGR> Connected.
SVRMGR> ORACLE instance shut down.
SVRMGR>
Server Manager complete.

Oracle Server Manager Release 3.1.7.0.0 - Production

Copyright (c) 1997, 1999, Oracle Corporation.  All Rights Reserved.

Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
JServer Release 8.1.7.0.1 - Production

SVRMGR> Connected.
SVRMGR> ORACLE instance started.
Total System Global Area                         24219808 bytes
Fixed Size                                          73888 bytes
Variable Size                                     7196672 bytes
Database Buffers                                 16777216 bytes
Redo Buffers                                       172032 bytes
Database mounted.
Database opened.
SVRMGR>
Server Manager complete.

Database "ORCL" warm started.
[oracle@jjxd oracle]$ sqlplus "system/manager"

SQL*Plus: Release 8.1.7.0.0 - Production on Fri Apr 23 21:30:04 2004

(c) Copyright 2000 Oracle Corporation.  All rights reserved.

ERROR:
ORA-01034: ORACLE not available
ORA-27101: shared memory realm does not exist
Linux Error: 2: No such file or directory




我是哪里出错了呢
是没有设置内存还是其他？？请各位赐教！
:confused: :confused: :confused: :confused: 10[/SIZE] orange[/COLOR]