A little confusing when i want to connect to my oracle database using toad after i restart my computer.
It show me error : ORA-12541: TNS:no listener. It was fine before i restart my computer.
The solution to this matter was the service to oracle TNS Listener should be turned on.
Open your control panel | administrative tools | select service.
On the Services window, find 'OracleXETNSListener' and just started it.
whoalaa... that should be it.
try the oracle connection again. It should be running now.

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