Uninstall Oracle - Clear windows registry

Hi All,
I like to know how to clear Windows Registry after unistalling Oracle and to install fresh version of Oracle. To avoid multiple Homes and some more..
(I tried deleting every key by searching 'oracle' in regedit).
Could anyone pls suggest the steps.
Cheers

Hi ,
I have done the procedure many ... many times!!!!
First you uninstall all Oracle products.... then you delete all occurences of 'oracle' found in the registry. Some keys in registry won't be deleted ... but don't worry....
Then you restart your computer and all windows services should be deleted. Then you delete the remainings in oracle_home - i mean in the directory where oracle products were installed....
You ' re ready for a new , fresh installllllllllll
Good luck
Simon

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user13101839 wrote:
Hi Everyone,
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Hello,
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a) Try to launch OUI and see if you can remove products
(I guess its not gonna work in your case as you mentioned)
b) Launch Services and try to stop all oracle related services.
Start - > Run -> Services.msc
c) Launch Registry and try to clean up oracle entries
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HKEY_LOCAL_MACHINE->SOFTWARE -> ORACLE
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C:\Program Files\Oracle
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How to uninstall Oracle completely

Hello all,
I would like to uninstall Oracle completely, and take it out of my accounts at the start up, how can I do that?
I uninstalled it using the the universal installer, but I still have a whole directory sitting on my computer under C;/ how can I clean that?
Thank you
Olga

Kindly follow the checklist. I have many times done clean installation on windows using oracle 9i fortunately did not face any issues. Thank you
===========checlist for windows =================
Uninstall all Oracle components using the Oracle Universal Installer (OUI).
Run regedit.exe and delete the HKEY_LOCAL_MACHINE/SOFTWARE/ORACLE key. This contains registry entires for all Oracle products.
Delete any references to Oracle services left behind in the following part of the registry:
HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/Ora*
It should be pretty obvious which ones relate to Oracle.
Reboot your machine.
Delete the "C:\Oracle" directory, or whatever directory is your ORACLE_BASE.
Delete the "C:\Program Files\Oracle" directory.
Empty the contents of your "c:\temp" directory.
Empty your recycle bin.
At this point your machine will be as clean of Oracle components as it can be without a complete OS reinstall.
Remember, manually editing your registry can be very destructive and force an OS reinstall so only do it as a last resort.
======== for unix ==================
Uninstalling all products from UNIX is a lot more consistent. If you do need to resort to a manual uninstall you should do something like:
Uninstall all Oracle components using the Oracle Universal Installer (OUI).
Stop any outstanding processes using the appropriate utilities:
# oemctl stop oms user/password
# agentctl stop
# lsnrctl stop
Alternatively you can kill them using the kill -9 pid command as the root user.
Delete the files and directories below the $ORACLE_HOME:
# cd $ORACLE_HOME
# rm -Rf *
With the exception of the product directory, delete directories below the $ORACLE_BASE.
# cd $ORACLE_BASE
# rm -Rf admin doc jre o*
Delete the /etc/oratab file. If using 9iAS delete the /etc/emtab file also.
# rm /etc/oratab /etc/emtab
==================================

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Hi,
I am trying to install Oracle Developer 6i and Oracle 8
under Windows NT platform. I had several kind of problem. Atlast
I found the installation tips very help and followed it step by
step. Still I am facing the problem. Let me explain what i did,
step by step,
1.downloaded the Oracle forms self extract file. Unzipped. Ran
the Setup.exe.
2.This prepared for Oracle Developer installation. I selected
default path and home(d:\ORANT and home_Default). Selected
oracle forms and installed it.
3.Repeated step 2 to install reports 6i.
4.Restarted the system.
5.Created another directory d:\orantnew
6.Used the Oracle 8 CD and installed using the Autorun.Selected
different path and oracle Home this time.(D:\orantnew and
home_New).
7. Selected the Oracle Enterprise Edition option and did the
installation.Rebooted the system.
8. Did the TCP/IP changes explained in the Step (5) and Step (6)
given below in Mr.Krishna's reply.
9. Tried to start the listner by following Step (7) the listener
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10. Went ahead and copied the TNSNAMES.
Connected to SQL*Plus using Start/Program/Oracle-OracntNew using
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error.Sorry). I would like to know if there is anything I am
doing wrong or missing out something.
Note : While uninstalling the oracle components i had problem
removing the bin directory. So I had to stop some of the
services
(OracleServiceORC1 and OracleStartORC1 from
start/controlpanel/services option) in order to delete the
oracle components.
Please someone let me know how can I install Oracle 8 and Oracle
Developer 6i,in windows NT platform.
Incase if i am doing anything wrong in the above given step or
missing out something pl let me know.
Thanks.
Extracted from another thread
Hi, >Try these steps, but you need to change a few things for Win2000 even I am trying, but Listener does'nt start there is a
problem I am looking into it, If you find the solution pl let me
know, these work fine on Win95/98 I have tried and they all work
fine.>-------------------------------------------->Installing
Personal Oracle 8. 1. 6. 0. 0 with Developer v6i (Reports 6. 0.
8. 8. 3, Forms 6. 0. 8. 0. 9)>On Windows 98>Note: All other
combinations may or may not work.> If you want to install
designer as well, do it now.
** Clean all Oracles off the computer using the following instructions. (Windows 95 and
Windows 98)
1. In regedit, go to HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE.
2. Go to HKEY_CURRENT_USER\SOFTWARE\ORACLE
3. Delete the ORACLE key.
4. Delete HKEY_LOCAL_MACHINE\SOFTWARE\ODBC pertaining to Oracle.
5. Delete HKEY_CURRENT_USER\SOFTWARE\ODBC pertaining to Oracle.
6. Edit your AUTOEXE.BAT file and remove your %ORACLE_HOME%\bin and JRE paths from the path settings.
7. From the Windows Explorer (or from the command prompt), delete the Oracle Directory
(Oracle Base).
8. Delete < System_Drive > C:\Program Files\Oracle (from the Windows NT Explorer or from the command
prompt).
9. Delete Icons from < System_Drive> C:\Windows\StartMenu\Programs\Oracle - <HOME> and <System_Drive>
C:\Windows\StartMenu\Oracle Installation Products. Where<HOME>
is the previous HOME name.
10. Reboot the system.
Installing Developer 6i(Forms and Reports)
1. Download the file from OTN site or Install from the CD. Install the installer. It will go
into a new default Oracle home that it will create. When you go
to install your Developer CD, close the installer that comes up
with the CD autorun. Go to the programs menu and Oracle for
Windows 95 and click on the installer there. Once it is open,
browse to the CD you wish to install. (installr/install/us)
2. Start installer. Install Developer 6i first to default directory, Orawin95 How? Start installer, follow the prompts
that appear on the screen, you may have to do this twice, once
for Oracle Forms and once for Oracle Reports, after the
installation is successful reboot the system.
3. If you want to install Designer 6 as well, do it now. (But I have not installed
the Designer ) Designer has to be installed before PO 8. 1. 6,
because PO816 can detect only one Oracle_home.
4. Create a new folder on your root directory called Orawin98. Start the installer set-up from where you downloaded it and
select Orawin98 to install it in this time. You also need to
give this second home a name whatever you want, but through out
the process, you have to use the identical name, that is
critical. Orawin98 indicates this name in these instructions. Do
not reboot. Install Oracle 8.1.6 to the directory Orawin98 using
the installer. Reboot the system.
5. Go to Start/Setting/Control Panel/Network, if you do not have TCP/IP installed, install it
now, if you do, highlight TCP/IP, click properties. Select DNS
tab, select enable DNS, at the host area, type "Orawin98", leave
domain empty. Go to Identification Tab and enter your database
name, in this case BBM. Reboot the system after you finish.
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Assistant, a window will pop
up, at the window expand Local and expand Listeners and double
click it, you will see a new window, go through all the tab
menus. At location address 1, Host name: use "Orawin98", Port
use: 1521 (default). And at location address 2, Host name:
use "Orawin98", Port use: 2481, go to the file/ save, close Net8
Assistant.
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successfully, if not, you need to go back to Net8 Assistant to
check configuration.
8. Copy file "TNSNAMES" in directory C:\Orawin98\Net80\Admin to C:\oraein95\Net80\Admin.
9. You are finished.
10. To connect Forms/Reports/SQLPLUS to database - First start the
Listener, then start the database. Next, go to File menu in
Forms/Reports and select Connect. Type in user name and password
(system/manager or whatever) in this case it is SCOTT/TIGER and
the database name is your "DATABASENAME". When you want to quit
you need to exit from file menu of Forms/Reports, then you need
to stop Listener and then shut down database.
11. You can rename your computer name in your original name. (for local networks)
Let me know if it is working.>null

Install Forms in one directory (You can have reports in the same
directory).
Install oracle DB in another directory.
Don't change any file and reboot.
The listener will start automatically as a service.
(If not from a command line write "lsnrctl start" to start it).
To connect from forms/report to the DB you need to activate the
sqlnet easy config tool from the directory where forms is.
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automatically.
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code you get so we can direct you in the correct direction).

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Hi All,
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Please advise.
Thanks,
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Regards,

Uninstall Oracle - Clear windows registry

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