Modifying an Oracle instance under Windows platform does not start with the service __oracle

A. Modifying an Oracle instance under Windows platform does not start with the service:

1, modify the registry key value to achieve the following:
Hkey_local_machine\software\oracle\key_oradb10g_home1

2, found on the right to find the Ora_wwl_autostart item, the default value of True, started with the service started, we will change it to false, when the service will no longer start the database

Test:

Start Oracle Services
C:\>net Start ORACLESERVICEWWL
The ORACLESERVICEWWL service is starting.
The ORACLESERVICEWWL service has started successfully.

We can see this time the database instance is not started with the service started
C:\>sqlplus/as SYSDBA

Sql*plus:release 10.2.0.4.0-production on Mon Dec 19 21:26:34 2011

Copyright (c) 1982, 2007, Oracle. All Rights Reserved.

Connected to a idle instance.

To start a database instance by manually executing the startup command
Sql> Startup
ORACLE instance started.

Total System Global area 1610612736 bytes
Fixed Size 2066080 bytes
Variable Size 184551776 bytes
Database buffers 1409286144 bytes
Redo buffers 14708736 bytes
Database mounted.
Database opened.
Sql>

Check to see if the instance is really up.
Sql> select Instance_name,status from V$instance;

instance_name STATUS
---------------- ------------
WWL OPEN