From couple of days i was facing IO Error: Connection reset by peer: socket write error, Connection Closed in my SQL Developer. I connected with Remote server DB. After wasting much of time i got the solution, Now i am sharing it, if it could save time of who is facing this issue. I hope it would resolve the issue.
The problem was due to Proxy, I was using Proxy for internet access but i did not used this proxy in SQL Developer. You should give proxy and must restart your SQL Developer if you are using Proxy.
To set Proxy go to Tools->Preferences->Web Browser and Proxy and set your Proxy there. In host name give your Proxy, in Port give port might be 8080 and in exception give any remote IP on which you facing this issue, Now restart your SQL Developer and try again, Problem will be no more.
Are you still getting problem? then try this solution too.
SQLDeveloper is not connecting to remote database
The problem was due to Proxy, I was using Proxy for internet access but i did not used this proxy in SQL Developer. You should give proxy and must restart your SQL Developer if you are using Proxy.
To set Proxy go to Tools->Preferences->Web Browser and Proxy and set your Proxy there. In host name give your Proxy, in Port give port might be 8080 and in exception give any remote IP on which you facing this issue, Now restart your SQL Developer and try again, Problem will be no more.
Are you still getting problem? then try this solution too.
SQLDeveloper is not connecting to remote database