the network adapter could not establish the connection-oracle SQL developer by using listener

its a lister problem, delete it and add it again'
How to solve the network adapter could not establish the connection on oracle SQL developer explained in this video and the solution works perfectly. Once you are using Linux and windows, you are more than 1000% covered as this method must surely work for you
It solves all the related problems like:
-The status; Status: Failure - Test Failed: IO Error: The Network Adapter could not establish the connection- will disappear instantly and your problem will be solved
-The Network Adapter could not establish the connection
-Status: Failure - Test Failed: IO Error: The Network Adapter could not establish the connection
-the network adapter could not establish the connection
-oracle network adapter could not establish the connection
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-how do I solve the oracle network adapter issue

[navedmeer]

Thank you so much I have Wasted my whole week. I have cross check with my trainer still is doesn't resolved. You made my day.

[KietNguyen-gqqr]

thank you very much, without you maybe i dont know how to learn next lecture

[bassantgamal]

Thank you a lot, I've been trying to solve this problem for two days, and finally solved 😃.

[vedashwi]

i am getting this error -> Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection
i have installed oracle 19c and i was able to work with sqlplus and sqldeveloper by after one day i am trying to connect with sqldeveloper i am getting this error ..and listener is also running and sqlplus is also working fine and services are also running but still i am not able to connect with many thanks in advance

[kushwahachandan]

Thanks alot brother i have been searching this solution from next three days finally i got this. Very helpful video.

[basheerahmed]

An error was occured, it's a the password has expired.how can I solve this error..

[pratikgupta]

What is IPC key value..while add listener

[AbhishekS-wrcb]

Bro not able to find listener in cmd itself.. it is showing lsnrctl not recognised

[sumedhchavan]

Sir same issue but not solving the problem