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Oracle 12c on Windows 7

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Here are step-by-step instructions for installing Oracle Database 12c Release 1 on Windows 7. This is more or less to install a Desktop version of Oracle 12c. I posted other versions for Oracle Database 11gR1 and 11gR2. While some report that they installation doesn’t work for them, its typically because they didn’t configured their Windows 7 environment.

Here are some Windows 7 configuration caveats before you perform this installation, and they are:

Windows 7 Configuration Steps

  1. Make sure you have at least 3 GB of memory on your Windows PC, or that you can allocate 4 GB of memory to your virtual machine for Windows.
  2. Install Oracle’s JDK 7 for 64-bit OS with NetBeans and 32-bit OS when running on a 64-bit machine. The installer is smart enough to only install NetBeans once. The JDK 7 32-bit installation supports SQL Developer.
  3. Disable Microsoft’s User Access Controls (UAC). I blogged about a set of Windows 7 gripes, and the second point shows you the screen shots that let you disable UAC on Windows 7.
  4. Configure your C:\Windows\System32\drivers\etc\hosts file. Use lines 1 through 3 when you’re using a DHCP IP address, and lines 1 through 4 when you’re using a static IP address. If you want to set a static IP address, check this old post on how to set a static IP address. Please note that the hostname needs to be lowercase.
3      localhost
::1            localhost      oracle12c
  1. Create a user account name that doesn’t have a white space, like McLaughlinM in the screen shots, and assign it Administrator privileges. During the install, you’ll be prompted to create a non-administrator account to start Oracle.

Oracle Database 12c Release 1 Installation Steps


  1. The first thing you need to do is unzip the two zip files into a common directory. I’ve chosen to create an OracleInstall folder. Oracle creates a database folder inside it. Within the database folder, click the Setup file to launch the Oracle Installer.


  1. After launching the Oracle Installer, the Configure Security Updates screen is your first stop. You may provide your email (attached to your Oracle Support Contract) and Oracle Support password, or uncheck the box and you can simply install a Desktop test environment. Click the Next button to proceed.


  1. The Software Updates is the next screen. If you want to check for updates, click and enter your Oracle Support credentials. If you want to install the base release, click the Skip software updates radio button. After making a choice about what you want to do with updates, click the Next button to proceed with the install.


  1. The Installation Option screen lets you chose whether you want to Create and configure a database (sample database), Intall database software only, or Upgrade an existing database. Check the appropriate radio button and then click the Next button to proceed with the install.


  1. The System Class screen lets you chose whether you want to install a Desktop class (ideal for develoers to play around in) or a Server class. Check the appropriate radio button and then click the Next button to proceed with the install.


  1. The Oracle Home User Selection screen lets you chose whether you want to Use Existing Windows User (that’s fine if you created one previously), Create New Windows User (what I’ll do next), or Use Windows Built-in Account. Check the appropriate radio button and then click the Next button to proceed with the install.


  1. The Oracle Home User Selection screen lets you Create New Windows User, and that’s what I’ve done with the oracle user (it could be whatever you like). Click the Next button to proceed with the install.


  1. The Typical Install Configuration screen lets you customize your installation. I’ve only opted to provide an Oracle compliant password while accepting the defaults. Click the Next button to proceed with the install.


  1. The Perform Prerequisite Checks screen initially displays a task bar. You need some patience, it’ll show you the next screen if everything is fine.


  1. The Summary screen tells you what you’re going to install. Read it over, save a copy for later, and when everything is right then click the Next button to install.


  1. The Install Product screen tells you what you’re installing and it can take some time. Don’t walk away too quickly because you’re most likely going to have to allow access for the installation to complete successfully.


  1. You should see two Windows Security Alerts with the installation. Click the Allow access button to continue successfully.


  1. The Database Configuration Assistant screen tells you that you’ve been successful to this point. Although, this is where several errors can occur when you failed to correctly configure Windows 7 before installation. This takes some time to run, here’s where you can take a break.


  1. The second Database Configuration Assistant screen lets you configure passwords for the database accounts. I’m skipping that by accepting the defaults and clicking the OK button to proceed.


  1. The Install Product screen reappears while most of the database cloning operation has finished. At this point, it starts configuring the Oracle Enterprise Manager (OEM). It can take a couple minutes to complete. Simply monitor it.


  1. The Finish screen appears after everything has worked. Click the Close button to finish the install.


  1. Now, you can open a Windows command shell and call the sqlplus executable with a /nolog option (denies login credentials form OS history files). Then, you can connect using the TNS orcl alias, which verifies your networking listener.ora and tnsnames.ora files are setup correctly. You should see the following in the command shell when the installation was successful.

C:\Users\mclaughlinm>sqlplus /nolog
SQL*Plus: Release Production on Fri Jul 26 02:00:19 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.
Connected to:
Oracle Database 12c Enterprise Edition Release - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
SQL> connect system@orcl
Enter password:

Oracle 12c changes the dynamics on users. You now have two types of databases. One is a Container Database (CDB) and the other is a Pluggable Database (PDB). While Oracle’s default container users, like SYS, SYSTEM, and so forth, remain unchanged, you create new CDB users with a C##<user_name> preface. PDB users are a different matter, and they can retain the same format used previously for user-defined users. You set PDB users as the ADMIN user for a pluggable database when you provision it.

Subsequent to this post, I’ve posted how you can provision an Oracle 12c Pluggable Database (PDB), and you can find it in this post. AS always, I hope that this helps those trying to find a quick shortcut on reading the instructions. ;-)

Written by maclochlainn

July 26th, 2013 at 2:15 pm

27 Responses to 'Oracle 12c on Windows 7'

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  1. […] step-by-step for Oracle 11gR2 […]

  2. pls we’re can I download the software ?


    30 Jul 13 at 3:06 pm

  3. Fredrick, You can get the software here.


    1 Aug 13 at 11:24 pm

  4. […] Installing Oracle 12c on Windows 7 […]

  5. One of the bizare things when I tried to install oracle 12c on windows 7 is that is stopped at 59%.

    Do you know why?



    24 Aug 13 at 2:56 am

  6. Mohamed, Try installing on the database files, and after that run DBCA to create the sample database. My hunch is that it’s failing while trying to clone the database.


    25 Aug 13 at 4:14 pm

  7. Great tuto!
    I have found that for simplicity in Windows 7 if you do not want to switch to oracleuser user to create a DB you need to add a couple of roles to an admin user:


    In my case my Oracle 12 Home is called OraDB12Home1, yours might differ.

    Otherwise you will receive the dreaded error when creating a DB:

    ORA-03113: end-of-file ON communication channel

    Of course this is practical for developing environments (and perhaps lazy people like me :)), but for security of course is best to do it from the oracleuser environment.

    Renaud Montes

    29 Aug 13 at 8:03 am

  8. Renaud, When you reference “Admin” user, do you mean the ADMIN user for a plug gable database?


    29 Aug 13 at 11:47 am

  9. Maclochlainn,

    Windows 7 on my computer is a 32-bit version. Can I follow the steps you mentioned to install Oracle 12c which is 64 bit on a 32-bit Windows 7.



    26 Sep 13 at 1:56 pm

  10. After installation i am able to connect from the SQL PLUS but when i tried connecting from SQL developer it is throwing error message Could not establish connection…
    Please help me….


    30 Sep 13 at 4:51 am

  11. Hari, Open a command-line console and type the following to verify the listener resolves:

    tnsping orcl


    30 Sep 13 at 11:02 pm

  12. Kamal, You can’t install a 64-bit version of Oracle on a 32-bit OS. Unfortunately, there’s no 32-bit version of Oracle 12c to download.


    30 Sep 13 at 11:07 pm

  13. hello,

    oracle 12c installation is stopping during the 59% of the installation.

    please can any one tell me this installation will complete successfully or not ??

    how much time it takes?


    5 Oct 13 at 8:28 am

  14. Srikanth, That’s generally a network problem. Try installing only the program files first. Then, use DBCA (Database Configuration Assistant) to create your database instance.


    12 Oct 13 at 9:18 pm

  15. Hi,

    I have done all the installation as you mentioned above, but when i try to create a new connection, i get the error 12505 “TNS:listener does not currently know of SID given in connect descriptor”.

    Have you already seen this error?
    I have been trying to fix it by searching on the internet, but nothing good.

    can you help me ?


    15 Oct 13 at 5:16 pm

  16. Will, Are you connecting to a container or pluggable database? Did you assign a hostname in your hosts file?


    11 Nov 13 at 2:09 am

  17. Hi,

    I got the 59% problem too.
    It’s caused by unzipping the two downloaded files into separate directories. Unzip the first one into a directory and then unzip the 2nd one into the SAME directory. Then run setup.


    Chris Phillips

    22 Dec 13 at 11:03 am

  18. Hi,

    This tutorial help me. Step by Step whitout complications and simple instrucctions. Very good.


    15 Jan 14 at 11:50 am

  19. While creating a database using Database Configuration Assistant I am getting erorr that it cannot add new member to local users group becuase this member does not exits. Anyone has a solution for this issue?


    31 Mar 14 at 3:53 pm

  20. ORA-12154: TNS:could not resolve the connect identifier specified

    Getting this error when trying to do the last step here.Can any one please help?


    7 Apr 14 at 2:08 pm

  21. Hi, while I was installing db 12c , it was installing correctly but at the time when it was almost 70-80% already installed and database configuration assistant was installing and creating the database it showed an error i.e failed to create database… something like that. So, what was wrong ? and how do I clean the failed installation files? pls help me quickly…

    Subham Raoniar

    17 Apr 14 at 10:48 am

  22. Subham, Did you make a Registry copy before the installation? If not, the bad news is the only way you can guarantee removal is to re-install the Windows OS.


    18 Apr 14 at 3:08 am

  23. Hello, thanks for this tut.. Found a great deal of information here.

    I do have some questions about Oracle 12C.
    System: 64bit
    OS: Windows 7 64bit
    Oracle: 12c 64bit

    Installation went smooth and completed installing everything.

    One question really is, how do I connect to it from MS Excel 2010?

    TNS_ADMIN Environment Variables configured:

    Anyway to connect to Oracle 12C 64bit using MS Excel 2010?


    21 Jun 14 at 6:19 am

  24. Nodols24, I think you want these instructions from another post on connecting Microsoft Excel to Oracle 11g.


    21 Jun 14 at 10:43 am

  25. Thank u this blog helped me a lot.


    28 Jul 14 at 2:57 am

  26. are the software free for devs?


    22 Jan 15 at 7:19 pm

  27. John, You should check Oracle’s licensing for that.


    1 Feb 15 at 11:37 pm

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