first, the unloading of the original databasethe database unloading is not much to say, talk about the process:1. Running Oracle Uninstall, uninstalling Oracle Products2. Delete all Oracle related items under regedit3. Restart the machine4. SC Delete delete Oracle related services5. Delete <Oracle_Home> folder manually. and the Oracle folder under C:\Program files6. Delete the manually added environment variables Note: You must delete the environment variables that you have added. I didn't delete oracle_home because I started. Cause has been wrong, the pain of n long before the fix.
Second, install XEThe process of installing XE is very easy, completely application software installation method, always point "next" to be able to, but I was in the installation of the time has encountered several problems: Start is to install and start the service, the installation process can not continue to go on, After another installation, the install is installed, but the database has not been created successfully, the process created by Oradim.exe has a strange running address, can not be started, manual creation is so, rather depressed.
To summarize, XE's installation is very opaque. It's impossible to start with so many problems. Only the reload can be removed. But it can be judged that almost all of the installation problems are due to the fact that the previous Oracle version number was not removed cleanly. Assume that there are very few errors on a machine that has never had Oracle installed.
After I deleted the n times, I cleared all the previous installation parameters, and finally it was installed successfully.
The following is the installation information: target directory: D:\oraclexe\
port:1521 of ' Oracle database Listener '
' Oracle services for Microsoft Transaction Server ' port:2030
port:8080 of the HTTP listener The following are the default installed services:OraclejobschedulerxeOraclemtsrecoveryserviceOracleservicexeoraclexeclragentOraclexetnslistener
third, remove XE
There is no delete option in the startup item after the installation is complete.
One way to remove xe is to delete the normal Oracle. To remove all installation information, there is a relatively simple way to open the installation file directly. Select "Delete". You can implement the function of one-click Delete.
The machine needs to be restarted after deletion, otherwise some information will be retained.
Oracle XE Installation Specific explanations
