1. Download the oracle database package. Here we take version 19c as an example. Download address: https://www.oracle.com/index.html
2. After downloading, unzip it to the corresponding directory and click to setup.exepop up the installation page .
3. Configure installation information
4. The above installation process is not important. You can search a lot on Baidu. The only thing you need to pay attention to is that you need to remember the password entered during the typical installation and use it when connecting.
After the installation is complete, click the windows button in the lower left corner, find the oracle item, click sqlplus, and log in to oracle.
Note: The initial user name systemand password are the passwords entered during typical installation. Navigate can be used to connect after successful connection here.
5. Create a new user/database , refer to this article
https://blog.csdn.net/m0_49605579/article/details/127240365?spm=1001.2014.3001.5502
Note: If you need to connect to the Oracle database remotely, you need to change the listener configuration:
(1) Find X:oracle installation directory\network\admin\listener.ora, and change the connection host to the computer name (change it if it is called localhost). The computer name can be queried by right-clicking "My Computer" and clicking "Properties".
6. Need to completely delete oracle reinstallation tutorial
(1) Click the windows icon in the lower left corner, find the oracle column, click it Universal Installer, click Uninstall product in the pop-up window, then check this level directory and click delete
(2) Delete the registry
按Windows徽标键和R键，打开运行窗口，输入regedit，打开注册表，依次展开
HKEY_LOCAL_MACHINE\SOFTWARE，找到oracle，删除
依次展开HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services中，删除所有oracle开头的项
依次展开HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application，删除所有oracle开头的项；
在HKEY_CLASSES_ROOT，删除以ora开头的项
(3) Delete all Oracle-related folders, re-unzip to the custom directory and click to install the exe file.