Oracle r12 on virtual machine

Hi,
I have installed Oracle r12 on virtual machine (linux) on my laptop.
I have noticed that virtual machine loses date/time.
How can I keep the date/time on my virtual machine in sync with my laptop date/time so that date and time in Oracle R12 is current?
Regards,
Manvir Singh

I had installled Vmware workstation 8 oel 5.5(32bit) on my windows 7 pro(64bit)system. i installed successfully oracle R12 no error found also first time i access the page on vmware Mozilla Browser after i just stop service and database as
well then restart machine then i ll up data base and app as well but now i cannot access login page error occured also when i try to connect to client its also gave error
below output when i try to connect from mozilla linux
An error occurred while loading http://www.erp:8000/OA_HTML/AppsLogin:
Could not connect to host www.erp (port 8000).
below output when i restart system and up the db and app
[oracle@www ~]$ source /d01/oracle/VIS/db/tech_st/11.1.0/VIS_www.env
[oracle@www ~]$ sqlplus sys/oracle as sysdba
SQL*Plus: Release 11.1.0.7.0 - Production on Mon Mar 26 01:22:12 2012
Copyright (c) 1982, 2008, Oracle. All rights reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 1071333376 bytes
Fixed Size 1318172 bytes
Variable Size 427819748 bytes
Database Buffers 629145600 bytes
Redo Buffers 13049856 bytes
Database mounted.
Database opened.
SQL> exit
Disconnected from Oracle Database 11g Enterprise Edition Release
11.1.0.7.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@www ~]$ lsnrctl start VIS
LSNRCTL for Linux: Version 11.1.0.7.0 - Production on 26-MAR-2012 01:26:12
Copyright (c) 1991, 2008, Oracle. All rights reserved.
Starting /d01/oracle/VIS/db/tech_st/11.1.0/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 11.1.0.7.0 - Production
System parameter file is
/d01/oracle/VIS/db/tech_st/11.1.0/network/admin/VIS_www/listener.ora
Log messages written to
/d01/oracle/VIS/db/tech_st/11.1.0/log/diag/tnslsnr/www/vis/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=www.erp)(PORT=1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=www.erp)(PORT=1521)))
STATUS of the LISTENER
Alias VIS
Version TNSLSNR for Linux: Version 11.1.0.7.0 - Production
Start Date 26-MAR-2012 01:26:12
Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File
/d01/oracle/VIS/db/tech_st/11.1.0/network/admin/VIS_www/listener.ora
Listener Log File
/d01/oracle/VIS/db/tech_st/11.1.0/log/diag/tnslsnr/www/vis/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=www.erp)(PORT=1521)))
Services Summary...
Service "VIS" has 1 instance(s).
Instance "VIS", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully
[oracle@www ~]$
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