ServiceAliasException: Could not save Service Alias: TNS-04406 Object already exists
Default local naming configuration complete.
ListenerException: Could not save listener: TNS-04414: File error caused by: TNS-04605: Invalid syntax error: Unexpected char or LITERAL "(" before or at ( PROGRAM =
Listener configuration complete.
DLP 15.8.x and 16.0
Oracle 19c Standard Edition, Single Tenant, Windows 2016
ORACLE_HOME environment variable had a trailing backslash as seen below.
C:\oracle\product\19.3.0.0\db_1\
Remove the trailing backslash from the environment variable path and run the netca.bat to create the listener.