当我们使用sqlplus本地登录oracle数据库时，设置的环境变量ORACLE_HOME和oracle启动时的环境变量ORACLE_HOME不一致时，会出现连接报错。

那么有什么办法可以看到oracle当时启动时的环境变量设置呢？总结一下：

Solaris：使用pargs –e

oracle@/proc/5032>uname -a

SunOS pcsweb-a 5.10 Generic_139556-08 i86pc i386 i86pc

oracle@/oracle>ps -ef|grep smon

oracle 2217410 21:21:43 ?55348:14 ora_smon_PCSWEB

oracle503210 13:39:21 ?0:04 ora_smon_PRECARD

oracle 29615 241030 15:25:26 pts/40:00 grep smon

oracle@/oracle>pargs -e 5032

5032:ora_smon_PRECARD

envp[0]: SKGP_HIDDEN_ARGS=

envp[1]: ORACLE_SPAWNED_PROCESS=1

envp[2]: _=/oracle/product/10.2.0/bin/sqlplus

envp[3]: TMPDIR=/oracle/tmp

envp[4]: LANG=zh

envp[5]: TEMP=/oracle/tmp

envp[6]: HZ=

envp[7]: PATH=

envp[8]: NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

envp[9]: ORACLE_BASE=/oracle

envp[10]: LOGNAME=oracle

envp[11]: LIBPATH=/oracle/product/10.2.0/lib:/oracle/product/10.2.0/network/lib:

envp[12]: MAIL=/var/mail/oracle

envp[13]: ORACLE_SID=PRECARD

envp[14]: PS1=$LOGNAME@$PWD>

envp[15]: DISPLAY=localhost:0.0

envp[16]: SHELL=/bin/ksh

envp[17]: ORACLE_TERM=vt100

envp[18]: HOME=/oracle

envp[19]: LD_LIBRARY_PATH=/oracle/product/10.2.0/lib:/oracle/product/10.2.0/network/lib:

envp[20]: TERM=vt100

envp[21]: ORACLE_HOME=/oracle/product/10.2.0

envp[22]: PWD=/oracle/admin/PRECARD/pfile

envp[23]: TZ=PRC

envp[24]: ORA_NET2_DESC=10,13

AIX：使用ps eww

oracle@ibmvs_a@/oracle $ uname -a

AIX ibmvs_a 3 5 0001571DD600

oracle@ibmvs_a@/oracle $ ps -ef|grep smon

oracle31133610Mar 02-4:13 ora_smon_MS

oracle24613610Mar 02-4:08 ora_smon_PS

oracle42645610Mar 21-2:57 ora_smon_BOCPCS

oracle50021810Mar 16-3:00 ora_smon_BOCT

oracle 114319610Apr 01-3:12 ora_smon_HT

oracle 20279267869240 15:25:50pts/00:00 grep smon

oracle@ibmvs_a@/oracle $ ps eww 311336

PIDTTY STATTIME COMMAND

311336- A4:13 ora_smon_MS _=/oracle/product/10.2.0/bin/sqlplus TMPDIR=/tmp LANG=en_US LOGIN=oracle NLS_CHARACTERSET=zhs16gbk SSH_TTY=/dev/pts/2 PATH= NLS_LANG=AMERICAN_AMERICA.ZHS16GBK ORACLE_BASE=/oracle LC__FASTMSG=true SSH_AUTH_SOCK=/tmp/ssh-WLRn258456/agent.258456 COBPATH=/opt/lib/cobol:/linc/ROC17:/linc/ADHOC17:/linc/LINC17 LOGNAME=oracle MAIL=/usr/spool/mail/oracle LINCII_BIND_DIR=/tmp COBDIR=/opt/lib/cobol ORACLE_SID=MS LOCPATH=/usr/lib/nls/loc USER=oracle AUTHSTATE=compat SHELL=/usr/bin/ksh DMDIR=/etc/objrepos HOME=/oracle SSH_CONNECTION=192.168.70.122 2339 192.168.100.193 22 SSH_CLIENT=192.168.70.122 2339 22 TERM=vt100 MAILMSG=[YOU HAVE NEW MAIL] ORACLE_HOME=/oracle/product/10.2.0 LINCIIDIR=/linc PWD=/oracle/product/10.2.0/dbs TZ=BEIST-8 A__z=! LOGNAME ORA_NET2_DESC=8,11 ORACLE_SPAWNED_PROCESS=1 SKGP_HIDDEN_ARGS= NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lib/nls/msg/%L/%N.cat LIBPATH=/oracle/product/10.2.0/lib32:/oracle/product/10.2.0/network/lib:/opt/lib/cobol/lib LD_LIBRARY_PATH=/oracle/product/10.2.0/lib32:/oracle/product/10.2.0/network/lib:/opt/lib/cobol/lib

使用ps eww可以看到进程启动时的环境变量，不过都在一行显示，看起来很不方便。

可以使用如下命令查看：

oracle@ibmvs_a@/oracle $ ps eww 311336|tr -s " " "\n"|grep ORACLE_HOME

ORACLE_HOME=/oracle/product/10.2.0

LINUX：使用strings -a /proc//environ

oracle@mail@/oracle $ uname -a

Linux mail 2.6.18-128.el5 #1 SMP Wed Dec 17 11:42:39 EST 2008 i686 i686 i386 GNU/Linux

oracle@mail@/oracle $ ps -ef|grep smon

oracle333610 Apr11 ?00:01:56 ora_smon_secdb

oracle19524 194920 15:24 pts/200:00:00 grep smon

oracle@mail@/oracle $ls -l/proc/3336/

total 0

dr-xr-xr-x 2 oracle dba 0 Jun 16 15:25 attr

-r-------- 1 oracle dba 0 Jun 16 15:25 auxv

-r--r--r-- 1 oracle dba 0 Jun 16 11:17 cmdline

-rw-r--r-- 1 oracle dba 0 Jun 16 15:25 coredump_filter

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 cpuset

lrwxrwxrwx 1 oracle dba 0 Jun 16 15:25 cwd -> /oracle/product/10.2.0/dbs

-r-------- 1 oracle dba 0 Jun 16 15:25 environ

lrwxrwxrwx 1 oracle dba 0 Jun 16 15:25 exe -> /oracle/product/10.2.0/bin/oracle

dr-x------ 2 oracle dba 0 Jun 16 15:25 fd

-r-------- 1 oracle dba 0 Jun 16 15:25 limits

-rw-r--r-- 1 oracle dba 0 Jun 16 15:25 loginuid

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 maps

-rw------- 1 oracle dba 0 Jun 16 15:25 mem

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 mounts

-r-------- 1 oracle dba 0 Jun 16 15:25 mountstats

-rw-r--r-- 1 oracle dba 0 Jun 16 15:25 oom_adj

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 oom_score

lrwxrwxrwx 1 oracle dba 0 Jun 16 15:25 root -> /

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 schedstat

-r-------- 1 oracle dba 0 Jun 16 15:25 smaps

-r--r--r-- 1 oracle dba 0 Jun 16 10:57 stat

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 statm

-r--r--r-- 1 oracle dba 0 Jun 16 15:24 status

dr-xr-xr-x 3 oracle dba 0 Jun 16 15:25 task

-r--r--r-- 1 oracle dba 0 Jun 16 15:25 wchan

oracle@mail@/oracle $ strings -a /proc/3336/environ

_=/oracle/product/10.2.0/bin/sqlplus

CVS_RSH=ssh

G_BROKEN_FILENAMES=1

HISTSIZE=1000

HOME=/oracle

HOSTNAME=mail

INPUTRC=/etc/inputrc

LANG=en_US

LD_LIBRARY_PATH=/oracle/product/10.2.0/lib32:/oracle/product/10.2.0/network/lib:

LESSOPEN=|/usr/bin/lesspipe.sh %s

LIBPATH=/oracle/product/10.2.0/lib32:/oracle/product/10.2.0/network/lib:

LOGNAME=oracle

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;01:or=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:

MAIL=/var/spool/mail/oracle

NLS_LANG=AMERICAN_AMERICA.ZHS16GBK

ORACLE_HOME=/oracle/product/10.2.0

ORACLE_SID=secdb

PATH=

PWD=/oracle

SHELL=/bin/ksh

SSH_ASKPASS=/usr/libexec/openssh/gnome-ssh-askpass

TERM=vt100

USER=oracle

ORA_NET2_DESC=8,11

ORACLE_SPAWNED_PROCESS=1

SKGP_HIDDEN_ARGS=

oracle@mail@/oracle $strings -a /proc/3336/environ|grep ORACLE_HOME

ORACLE_HOME=/oracle/product/10.2.0