Got a minus one from a read call

Question

I connect to a database with read only access using SQL developer. It\'s a TNS connection. I use a tnsnames.ora, forwarding port script and SQL Developer.

In the past, o

Answer 1

Check your sqlnet.ora file and comment if there is any entry like the below.

tcp.validnode_checking = yes

tcp.invited_nodes=(, )

Now reload your listener and check the connectivity from SQL Developer.

lsnrctl reload