After successful installation of XE edition I decided to remove the enterprise one.īy the way when check uninstall program tool in windows control panel, you will not find any installation entry for enterprise edition, for xe version only.īy convenience Oracle remove its database when you run the installer again and choose to remove the installed version from there, but with 11g the story is totally different this option isn't there! Oh then how to uninstall the database?Īfter some search in my local oracle installation home directory I have found the solution and here is it: Today I have downloaded and installed the express edition 11g release 2 for small foot print in memory and disk as well, the installation goes successfully this time even the error raised but this time the installation continues till the end. I wanted to work on database 11g XE release 1 instead of 10g for evaluating the new features, especially those ones introduced in PL/SQL, but the main problem is from 5 months I tried to install XE on windows 7 圆4 bit and oracle release only x86 bit version, and when I tried to install it I have got an error indicating that a registry key file is not located and installation doesn't continue, after a while I have downloaded Oracle database 11g release 2 enterprise edition and install it, but with the time I have found that it tooks a lot of memory and disk space on my local development laptop.