first, the unloading of the original databasethe database unloading is not much to say, talk about the process: 1. Execute Oracle Uninstall and uninstall Oracle Products2. Delete all Oracle related items under regedit3. Restart the machine4. SC Delete delete Oracle related services5. Manual Delete <Oracle_Home> directory, and Oracle directory under C:\Program files6. Remove the manually added environment variablesNote: You have to delete the environment variables you added, I did not delete oracle_home because of the beginning, resulting in error, the pain of n long to fix.
Second, install XE the process of installing XE is very simple, is completely application software installation method, always point to "next" on it, but I am in the installation of the time has encountered several problems: the beginning is to install and start the service, the installation process can not continue, and then reinstall when the installation is loaded, But the database has not been created successfully, the process created by Oradim.exe has an inexplicable execution address, cannot be started at all, manual creation is also so, quite depressed. all in all, XE's installation is very opaque, resulting in a lot of problems can not start, only remove the reload. However, it can be inferred that almost all of the installation problems are caused by the fact that the previous Oracle version was not removed cleanly, and it is rare to have an error on a machine that has never been installed on Oracle. 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: Destination folder: D:\oraclexe\
Port for ' Oracle Database Listener ': 1521
' Oracle services for Microsoft Transaction server ' port: 2030
Port for HTTP listener: 8080 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 remove all installation information just as you would delete normal Oracle, and another relatively simple way is to open the installation file directly and select "Delete" to implement the one-click Removal feature. The machine needs to be restarted after deletion, otherwise some information will be retained.
Oracle XE Installation Detailed
