can't login with sys/password@sid as sysdba

Hello,

I have installed new Oracle 12.2.0.1 Database/software on AIX Machine and i'm able to connect using SQLPLUS / as sysdba

but if i use for example sqlplus sys/password@sid as sysdba it gives me ORA-01017: invalid username/password; logon denied

Also same if i'm connecting from sql developer.

Please note that i'm able to connect with system user on sql developer

also i tried to reset the sys password by:

alter user sys identified by password;

also tried :

orapwd file=orapwora81 entries=30

and entered sys password

but still have the same error.

SQL> show parameter remote;

NAME                 TYPE    VALUE