I have been trying to install Oracle 18C XE on my laptop. The installation says it's successful but it's been showing me the following error when I try to connect to SQL (Please refer to the image attached).
When I checked for the services, turns out only 2, out of the 5 or 6 services that should have been there, are installed (please see image attached).
I have tried various ways for a successful installation (following suggestions from the internet web search).
-Removed all the previous installations by deleting the Oracle registers from reg edit,
-tried various combinations of the parameters for SID, service name, hostname, etc., while trying to connect to SQL,
-tried using various search engines to download a better quality of installation file for 18C,
-I have even tried downloading the installation files and installed the software by blocking the firewall because sometimes the firewall blocks certain files from downloading if it sees as a threat,
and many more unsuccessful trails.
If anyone faced a similar issues and were able to resolve it successfully please let me know. Any suggestions are welcome.
Note: Oracle 11g installation worked fine for me.