-- the Who am I script

def   mysid="NA"
def _i_spid="NA"
def _i_cpid="NA"
def _i_opid="NA"
def _i_serial="NA"
def _i_inst="NA"
def _i_host="NA"
def _i_user="&_user"
def _i_conn="&_connect_identifier"

col i_username head USERNAME for a20
col i_sid head SID for a5 new_value mysid
col i_serial head SERIAL# for a8 new_value _i_serial
col i_cpid head CPID for a15 new_value _i_cpid
col i_spid head SPID for a15 new_value _i_spid
col i_opid head OPID for a5 new_value _i_opid
col i_host_name head HOST_NAME for a25 new_value _i_host
col i_instance_name head INST_NAME for a12 new_value _i_inst
col i_ver head VERSION for a10
col i_startup_day head STARTED for a8
col _i_user noprint new_value _i_user
col _i_conn noprint new_value _i_conn
col i_myoraver noprint new_value myoraver

select 
    s.username          i_username,i.instance_name i_instance_name,i.host_name         i_host_name,to_char(s.sid)          i_sid,to_char(s.serial#)      i_serial,(select substr(banner,instr(banner,'Release ')+8,10) from v$version where rownum = 1) i_ver,(select  substr(substr(banner,'Release ')+8),1,instr(substr(banner,'.')-1)
     from v$version 
     where rownum = 1) i_myoraver,to_char(startup_time,'YYYYMMDD') i_startup_day,p.spid              i_spid,trim(to_char(p.pid))        i_opid,s.process           i_cpid,s.saddr             saddr,p.addr              paddr,lower(s.username) "_i_user",upper('&_connect_identifier') "_i_conn"
from 
    v$session s,v$instance i,v$process p
where 
    s.paddr = p.addr
and 
    sid = (select sid from v$mystat where rownum = 1);

-- Windows CMD.exe specific stuff

-- host title %CP% &_i_user@&_i_conn [sid=&mysid ser#=&_i_serial spid=&_i_spid inst=&_i_inst host=&_i_host cpid=&_i_cpid opid=&_i_opid]
   host title %CP% &_i_user@&_i_conn [sid=&mysid #=&_i_serial]
-- host doskey /exename=sqlplus.exe desc=set lines 80 sqlprompt ""$Tdescribe $*$Tset lines 299 sqlprompt "sql> "

-- short xterm title
-- host echo -ne "\033]0;&_i_user@&_i_inst &mysid[&_i_spid]\007"
-- long xterm title
--host echo -ne "\033]0;host=&_i_host inst=&_i_inst sid=&mysid ser#=&_i_serial spid=&_i_spid cpid=&_i_cpid opid=&_i_opid\007"


def myopid=&_i_opid
def myspid=&_i_spid
def mycpid=&_i_cpid

-- undef _i_spid _i_inst _i_host _i_user _i_conn _i_cpid

样品输出：

17:39:35 SYSTEM@saz-dev> @sandBox
Connected.
18:29:02 SYSTEM@sandBox> @me

USERNAME             INST_NAME    HOST_NAME                 SID   SERIAL#  VERSION    STARTED  SPID            OPID  CPID            SADDR    PADDR
-------------------- ------------ ------------------------- ----- -------- ---------- -------- --------------- ----- --------------- -------- --------
SYSTEM               xe           OARS-SANDBox              34    175      11.2.0.2.0 20130318 3348            30    6108:7776       6F549590 6FF51020

1 row selected.

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