Oracle likes to confuse you sometimes.
Are you looking to download Oracle JDeveloper 12c (184.108.40.206.0) to do your SOA and OSB development?
You might struggle finding the correct version. Essentially, you will need to download Oracle SOA Suite 220.127.116.11 QuickStart. Do not download Oracle JDeveloper Studio Edition 18.104.22.168.0.
Download the two required files from here:
Extract them, then run the command:
java -jar fmw_22.214.171.124.0_soa_quickstart.jar
Do not download from either of these links:
- Oracle JDeveloper 12c (126.96.36.199.0) for SOA Suite and Service Bus