Even in 2023, we are seeing this TNS error in our Oracle databases. This video provides various fixes for this error and one of them should resolve the issue 99% of the time.
Watch video ORA-12518, TNS:listener could not hand off client connection online, duration hours minute second in high quality that is uploaded to the channel Fahd Mirza 01 January 1970. Share the link to the video on social media so that your subscribers and friends will also watch this video. This video clip has been viewed 4,221 times and liked it 9 visitors.