How to restore a schema from a corrupted DB

Hi,
I need your help.
I am using a laptop and a desktop, both with XP SP2. I have installed Oracle XE on both of them. They are in a LAN.
I have been using them for almost a year now...
But since few days ago I cannot use the DB from my desktop (there is no reason ). I can not start it anymore, even if the "net start ..." command tells me that it is started.
I really need a schema I have created in that DB. I have tried to restore the DB, but without any luck. Not even through Sqlplus utility.
My question to you is if I there is a way of copying the schema from the "bad" DB to the working one from my laptop. Wich are the files needed to be copied, or is there a tool for this?
Please help.
Thank you.

I don't know how to attach...
This is the log from "alert_xe.log" found at "oracle\admin\XE\bdump"
<em>ORA-1092 signalled during: alter database open...
Thu Oct 30 11:09:09 2008
Starting ORACLE instance (normal)
LICENSE_MAX_SESSION = 0
LICENSE_SESSIONS_WARNING = 0
Picked latch-free SCN scheme 2
Using LOG_ARCHIVE_DEST_10 parameter default value as USE_DB_RECOVERY_FILE_DEST
Autotune of undo retention is turned on.
IMODE=BR
ILAT =10
LICENSE_MAX_USERS = 0
SYS auditing is disabled
ksdpec: called for event 13740 prior to event group initialization
Starting up ORACLE RDBMS Version: 10.2.0.1.0.
System parameters with non-default values:
sessions = 49
__shared_pool_size = 96468992
__large_pool_size = 8388608
__java_pool_size = 4194304
__streams_pool_size = 0
spfile = D:\ORACLEXE\APP\ORACLE\PRODUCT\10.2.0\SERVER\DATABASE\SPFILEXE.ORA
sga_target = 285212672
control_files = D:\ORACLEXE\ORADATA\XE\CONTROL.DBF
__db_cache_size = 171966464
compatible = 10.2.0.1.0
db_recovery_file_dest = D:\OracleXE\app\oracle\flash_recovery_area
db_recovery_file_dest_size= 10737418240
undo_management = AUTO
undo_tablespace = UNDO
remote_login_passwordfile= EXCLUSIVE
dispatchers = (PROTOCOL=TCP) (SERVICE=XEXDB)
shared_servers = 4
job_queue_processes = 4
audit_file_dest = D:\ORACLEXE\APP\ORACLE\ADMIN\XE\ADUMP
background_dump_dest = D:\ORACLEXE\APP\ORACLE\ADMIN\XE\BDUMP
user_dump_dest = D:\ORACLEXE\APP\ORACLE\ADMIN\XE\UDUMP
core_dump_dest = D:\ORACLEXE\APP\ORACLE\ADMIN\XE\CDUMP
db_name = XE
open_cursors = 300
os_authent_prefix =
pga_aggregate_target = 94371840
PSP0 started with pid=3, OS id=2272
MMAN started with pid=4, OS id=1132
PMON started with pid=2, OS id=2464
DBW0 started with pid=5, OS id=3760
LGWR started with pid=6, OS id=3308
CKPT started with pid=7, OS id=3364
SMON started with pid=8, OS id=4068
RECO started with pid=9, OS id=3700
CJQ0 started with pid=10, OS id=796
MMON started with pid=11, OS id=672
Thu Oct 30 11:09:19 2008
starting up 1 dispatcher(s) for network address '(ADDRESS=(PARTIAL=YES)(PROTOCOL=TCP))'...
MMNL started with pid=12, OS id=2088
Thu Oct 30 11:09:19 2008
starting up 4 shared server(s) ...
Oracle Data Guard is not available in this edition of Oracle.
Thu Oct 30 11:09:25 2008
ALTER DATABASE MOUNT
Thu Oct 30 11:09:30 2008
Setting recovery target incarnation to 2
Thu Oct 30 11:09:30 2008
Successful mount of redo thread 1, with mount id 2550589605
Thu Oct 30 11:09:30 2008
Database mounted in Exclusive Mode
Completed: ALTER DATABASE MOUNT
Thu Oct 30 11:09:30 2008
ALTER DATABASE OPEN
Thu Oct 30 11:09:30 2008
Beginning crash recovery of 1 threads
Thu Oct 30 11:09:31 2008
Started redo scan
Thu Oct 30 11:09:32 2008
Completed redo scan
0 redo blocks read, 0 data blocks need recovery
Thu Oct 30 11:09:32 2008
Started redo application at
Thread 1: logseq 168, block 3, scn 6371820
Thu Oct 30 11:09:33 2008
Recovery of Online Redo Log: Thread 1 Group 1 Seq 168 Reading mem 0
Mem# 0 errs 0: D:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ONLINELOG\O1_MF_1_42TXS38T_.LOG
Thu Oct 30 11:09:33 2008
Completed redo application
Thu Oct 30 11:09:33 2008
Completed crash recovery at
Thread 1: logseq 168, block 3, scn 6391821
0 data blocks read, 0 data blocks written, 0 redo blocks read
Thu Oct 30 11:09:34 2008
Thread 1 advanced to log sequence 169
Thread 1 opened at log sequence 169
Current log# 2 seq# 169 mem# 0: D:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ONLINELOG\O1_MF_2_42TXS67V_.LOG
Successful open of redo thread 1
Thu Oct 30 11:09:34 2008
SMON: enabling cache recovery
Thu Oct 30 11:09:41 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\udump\xe_ora_2728.trc:
ORA-00600: internal error code, arguments: [kcbz_check_objd_typ_3], [3], [0], [5], [], [], [], []
Thu Oct 30 11:09:45 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\udump\xe_ora_2728.trc:
ORA-00600: internal error code, arguments: [kcbz_check_objd_typ_3], [3], [0], [5], [], [], [], []
Thu Oct 30 11:09:46 2008
Error 600 happened during db open, shutting down database
USER: terminating instance due to error 600
Thu Oct 30 11:09:46 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_lgwr_3308.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:47 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_dbw0_3760.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:47 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_ckpt_3364.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:47 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_pmon_2464.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:48 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_reco_3700.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:48 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_smon_4068.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:49 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_psp0_2272.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Thu Oct 30 11:09:49 2008
Errors in file d:\oraclexe\app\oracle\admin\xe\bdump\xe_mman_1132.trc:
ORA-00600: internal error code, arguments: [], [], [], [], [], [], [], []
Instance terminated by USER, pid = 2728
ORA-1092 signalled during: ALTER DATABASE OPEN...</em>

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