How to remove Oracle service

[Claudius]

I have Oracle 9 installed in my computer. I want to uninstall Oracle database service from my system as I am not using this from a long time. I have Windows operating system. How can I remove Oracle service from my Windows ? Can anybody know how to do this......plz help

[Praetor]

To remove Oracle Service from your Windows system,

> go to Start
> click Run
> In the command prompt, type: oradim -delete -sid SID

where SID is the sid of your database, as it appears when you type
net start | more (you should get an "OracleServiceSID")

> press Enter

[Katty]

Follow the steps below to remove Oracle -

The simplest way to remove Oracle is to run the Oracle installer:
Start > Programs > Oracle Installation Products > Universal Installer
On the first screen that appears, click on "Deinstall Products..."
Expand the tree view (as the second level is visible) and select everything that is selectable.
Click "Remove..."
On the confirmation screen, click "Yes"
Click "Close" when finished and then "Exit" to quit the installer

The Oracle installer removes most of the components but it leaves many traces behind. In order to completely remove all traces of Oracle, some additional steps needs to be taken:

Start > Settings > Control Panel > Services.
Look for any services with names starting with 'Oracle'.

Start > Run > type "regedit", click "OK"

Find and delete the following keys:

HKEY_LOCAL_MACHINE
\SOFTWARE
\ORACLE

HKEY_LOCAL_MACHINE
\SYSTEM
\CurrentControlSet
\Services
\EventLog
\Application
\Oracle.oracle

Note: some users also have registry entries saved under HKEY_CURRENT_USER\SOFTWARE\ORACLE, which may be created by some Oracle utilities. If it exists then delete it.

Delete the Oracle home directory:
"C:\Oracle"
This will also remove your database files (unless you located them elsewhere, in which case you will need to delete them separately).

Delete the Oracle program Files directory:
"C:\Program Files\Oracle"

Delete the Oracle programs profile directory:
"C:\Documents and Settings\All Users\Start Menu\Programs\Oracle - OraHome90"

If you didn't first run the Oracle Installer to remove Oracle then you may have some references to Oracle left in the path.
To remove these: Start > Settings > Control Panel > System > Advanced > Environment Variables. look at both the use and system variable 'PATH' and edit them to remove any references to Oracle.

[Zecho]

To uninstall Oracle service -

• You can uninstall all the Oracle components and services using OUI (Oracle Universal Installer).
  
  
• Delete the HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE key which contains registry entries for all Oracle products by using regedit.
• Delete any references to Oracle services/components in the following registry location: HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/. Looks for key entries that starts with “Ora” which are obviously related to Oracle.
• Reboot the workstation.
• Delete the ORACLE_BASE directory. (i.e C:\Oracle)
• Delete the C:\Program Files\Oracle directory.
• At the end, empty the temp directory and the recycle bin.

[Reegan]

The methods mentioned above will obviously solve your problem to remove the oracle services from your system.

In the Chapter 6 of Oracle Database Software by Oracle, it says all the information about Removing Oracle Database Software.
To get the detailed info - click here