Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection

?Dear Techies, ****************************************************************************************************** In This video will see how to resolve the error of IO Error: The Network Adapter could not establish the connection in SQL Developers. Run below Commands: step 1. Run CMD as Administrator step 2. use this commands lsnrctl start lsnrctl status step 3. In RUN Execute this services.msc step 4. Start the following services start or Refresh & start or Refresh 'OracleOraDB21Home1TNSListener' ****************************************************************************************************** I am starting a new Oracle SQL Weekday & Weekend batch. ?For Live training contact me on WhatsApp (+91 9923439142) Do you want to join our Group for Jobs and training ? ?Please join in the WhatsApp group for an update ************************************************************************************ ? It is Job based - Live online training session ? 100% Job assistance, Real time training. ? Resume preparation, Interview preparation supported. ? Project explanation, Mock interviews will be taken. ************************************************************************************ 1. Interview preparation, mock interview taken 2. Low-cost training 3. Job Assistance 4. Have 10+ yrs of IT Exp 5. Job-Oriented Training 6. Lifetime video recording access ************************************************************************************...