Hi,
I am new to Oracle Forms 12c.
I Recently installed oracle forms and reports 12c (12.2.1.4) on Windows 10. Installation went smooth and I am able to open Oracle forms 12c (12.2.1.4) Builder. My 12c database is Up, and i able to connect using SQL Developer, Command line.
I am facing Issue while connecting with database in "Connect" window in oracle forms for compilation.
When I enter connection string for 12c in connect window, I face three issues.
1. when I Enter :
Username = system
password = mypassword
database=orcl
Oracle forms goes in non responding stage and I have to kill It after waiting 15 minutes.

2. When I Enter
Username = system
password = mypassword
database=192.168.1.107:1521/orcl
I receive an BLANK Error modal dialog

3. When I Enter
Username = system
password = mypassword
database=192.168.1.107
I Receive an Error ORA-12504, TNS:Listener was not given the SERVICE_NAME in CONNECT_DATA.

I am able to connect to 11g Express edition database using Oracle Forms 12c.
Username = system
password = mypassword
database=192.168.1.105:1521/xe
I found that You have to add entries in tnsnames.ora of oracle forms, but still I am unable to connect to database through oracle forms 12c.
Please guide me.