8 Replies Latest reply on Sep 10, 2020 4:16 PM by 88aeb6bf-63c7-4fc9-9567-5a6229de630e

    IO Error : The Network Adapter could not establish the connection in SQL Developer


      I am on SQL Developer ver. and I keep getting this error. I have already searched for solutions.

      • Tried changing from Basic to TNS mode, nothing shows up in the network alias list.
      • Tried disabling firewall, no help.
      • Tried to find those 5 services in the using run --> services.msc , those services do not show up.

      Please help me with a solution, I was using jdk 14 but it used to keep saying this version is not supported properly,

      so I also installed jdk 11, but to no resort.