Oracle SQL Developer Problem initializing Welcome Page

Question

I installed the Oracle Sql developer but I am not getting the startup page. A JavaFx error is encountered.

How can I solve this problem?

Answer 1

Summary of a solution for Mac OS (Catalina) and SQL Developer 19.4:

1. Check installed java versions on Mac: ls /Library/Java/JavaVirtualMachines/
2. Ensure you have 8 or 11 java version installed, must be official java from Oracle - openjdk doesn't include JavaFX
3. Check the correct path for e.g. version 11, run this command in terminal: /usr/libexec/java_home -F -v 11
4. Copy the path, e.g. /Library/Java/JavaVirtualMachines/jdk11.0.6.jdk/Contents/Home
5. Edit in user home dir the file ~/.sqldeveloper/19.4.0/product.conf : SetJavaHome /Library/Java/JavaVirtualMachines/jdk-11.0.6.jdk/Contents/Home

This worked for me.