This content has been marked as final. Show 2 replies
You don't say what sqldeveloper version you are using but I assume recent one which uses the 11g JDBC drivers. Connection to 8.1.6 is not supported wit that JDBC drivers
Your only chance is to download an older version of sqldeveloper, 1.5 or perhaps 2.1.
I realise it probably isn't in your control, but 8.1.6 has been out of support for many years and you really ought to upgrade.,