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Former Member

How to completely uninstall oracle software?

Dear all,

I have followed the installation guide to delete the oracle software after i removing the CI and DB instance.

There was 2 parts where i unsure whether i did it correctly.

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3. Edit the Oracle Registry entries as follows:

a. Choose Start → Run and enter REGEDIT

b. Delete the key HKEY_LOCAL_MACHINE → SOFTWARE → ORACLE

c. Delete all Oracle references under HKEY_LOCAL_MACHINE → SYSTEM→CURRENTCONTROLSET → SERVICES

4. Delete all Oracle references from the Windows user and system environment:

a. Choose Start → Programs → System.

b. Choose the Advanced tab and then click Environment Variables.

c. For example, delete the variables:

TNS_ADMIN, NLS_LANG, ORACLE_HOME

d. Also delete Oracle from the PATH variable

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I was unsure because there are so many Sap system installed in the same host. I deleted everything with the <sapid> in the above place.

After i done with the deletion, i start to reinstall a new oracle software, whenever i start the OUI, the old oracle software keep generate out(i deleted manually and trying to install a new oracle software with the same name).

In the end, i gave up and use another name. why is this happening? maybe i didn't delete it clearly enough?

hope some one can explain on this, thanks in advanced

regards,

Jerry

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3 Answers

  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Jan 07, 2008 at 09:41 AM

    Hi,

    you have to delete the folder C:\program files\Oracle.

    The folder inventory keeps a trace of all installations done on the server.

    Regards,

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  • Posted on Jan 07, 2008 at 10:02 AM

    Hi Jerry,

    Why don't you use the Oracle Universal Installer to remove the software? then if anything left you can remove manually.

    Regards

    Juan

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    • Former Member Former Member

      This is where my problem comes. I have multiple SAP instances that are installed in the same host.

      I deleted ALL the registry enteries and environment variables that contain the <sid> that i wanted to delete. Then i have problem starting back my other SAP instance(we have to close all the services and sqlplus when deleting the oracle software). I couldn't start the services back with error 6: invalid handler. I could not see any sap system from MMC.

      I believe it have to do with the environment variable and registry entries i deleted. Any idea how to recover back or tell me what is the standard environment variable that is needed for multiple sap and oracle to run?

      p/s: we have multiple oracle software and multiple sap instance/DB instance installed in the same machine.

  • author's profile photo Former Member
    Former Member
    Posted on Jan 08, 2008 at 07:17 AM

    hi,

    Uninstall all the softwares in the all folders related to that software.

    Also delete the all Oracle Services related to that software,reinstall it.

    I think then it will move smooth..

    Arun

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