sql>connect system
password : 

ora-01034: ORACLE not available
ora-27101: shared memory realm does not exist windows

LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 22-MAR-2014 17:06:22

Copyright (c) 1991, 2005, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC_FOR_XE)))
STATUS of the LISTENER
------------------------
Alias                     LISTENER
Version                   TNSLSNR for 32-bit Windows: Version 10.2.0.1.0 - Production
Start Date                22-MAR-2014 14:58:44
Uptime                    0 days 2 hr. 7 min. 41 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Default Service           XE
Listener Parameter File   D:\oraclexe\app\oracle\product\10.2.0\server\NETWORK\ADMIN\listener.ora
Listener Log File         D:\oraclexe\app\oracle\product\10.2.0\server\network\log\listener.log
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROC_FOR_XEipc)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
Services Summary...
Service "CLRExtProc" has 1 instance(s).
  Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Service "PLSExtProc" has 1 instance(s).
  Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

*.SPFILE='D:\oraclexe\app\oracle\product\10.2.0\server\dbs\spfileXE.ora'

Dump file d:\oraclexe\app\oracle\product\10.2.0\server\rdbms\trace\alert_xe.log
Sat Mar 22 10:03:05 2014
ORACLE V10.2.0.1.0 - Production vsnsta=0
vsnsql=14 vsnxtr=3
Windows XP Version V5.1 Service Pack 3
CPU                 : 4 - type 586, 2 Physical Cores
Process Affinity    : 0x00000000
Memory (Avail/Total): Ph:1530M/2713M, Ph+PgF:3209M/4603M, VA:1945M/2047M
Sat Mar 22 10:03:05 2014
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0