Although the Oracle Database 10g server software comes in a pack of CD-ROMs, you need only a single CD to complete your Oracle 10g server installation. It takes only about 20 minutes to complete the entire installation.

• Memory: You need 256MB for the basic database, and 512MB if you are using the   stand-alone version of the OEM (the OEM Database Control).

• Disk space: You need a maximum of about 2.5GB of disk space for the Oracle   software. In addition, you need 1GB of swap space and about 400MB of disk space in   the /tmp directory.

In the de-installation process, related software files and Widows registry entries are removed.

1. Shut down all databases and ASM instances running under the Oracle Home you want     to remove, and then remove the databases.

2. Stop all the relevant processes running under this Oracle Home, by running following     commands:

$ORACLE_HOME/bin/emctl stop dbconsole – shuts down the OEM.

$ORACLE_HOME/bin/lsnrctl stop – brings down the Oracle listener

$ORACLE_HOME/bin/isqlplusctl stop – brings down the iSQL*Plus server

3. Start the OUI.

4. Click De-install Products in the Welcome window.

5. In the Inventory window, select the correct Oracle

Home that contains the software you want to de-install, and then click Remove.

6. Manually remove the Home directory that you just de-installed.

The following products will launch automatically immediately after you complete the server installation:

Oracle Management Agent, the OEM Database Control, and the iSQL*Plus server.

The following are the new Oracle 10g improvements in the response file, which help you perform a truly "silent" Oracle installation:

• The file has a new header format, which makes the response file easier to edit.

• You don’t need to specify an X server when performing installations in a character mode    console.

• You don’t need to set the DISPLAY variable on UNIX systems.

• No GUI classes are instantiated, making this a truly silent method of installing software.