Dear all,
i have the following production environment
Operating System=windows server 2012 64bit
Database= Oracle Database 12c Enterprise Edition
and i have the following environment for client
Operating System=windows server 2012 64bit
Database client= Oracle Database 12c client
Connecting Tool=Microsoft SQL Server Migration Assistant for Oracle v6.0.0
now, on the clients side, when i try to connect using sql plus, it is connecting successfully to my production DB,
but when i try to connect using the Microsoft SQL Server Migration Assistant for Oracle v6.0.0, it give the following error
Connection to Oracle failed
ORA-12518: TNS: Listener could not hand off client connection


how could i fix it?
thank you.