Prerequisites of Oracle 12c or Oracle 19.x database before Unica Campaign installation
You must set the following configuration while using Oracle Database version 12.2.x and 19c.
On Oracle database server, add the following parameters in “sqlnet.ora” file located
under ORACLE_HOME/network/admin/
SQLNET.ALLOWED_LOGON_VERSION_SERVER
Contact the Database Administrator to provide appropriate value to this parameter. See the following link for more details: https://docs.oracle.com/database/121/NETRF/sqlnet.htm#NETRF2016