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

For those that get recent upgrade to java 11 as default jre and get an application that don't work with it (still need java 8) I just find that you still can downgrade openjfx (that's works for SQL Developper in my case)

sudo apt install libopenjfx-java=8u161-b12-1ubuntu2
sudo apt install libopenjfx-jni=8u161-b12-1ubuntu2
sudo apt install openjfx=8u161-b12-1ubuntu2

Then. check that you have the OpenJFX 8 :

$ dpkg -l | grep openjfx

ii  libopenjfx-java    8u161-b12-1ubuntu2   all          JavaFX/OpenJFX 8 - Rich client application platform for Java (Java libraries)
ii  libopenjfx-jni     8u161-b12-1ubuntu2   amd64        JavaFX/OpenJFX 8 - Rich client application platform for Java (native libraries)
ii  openjfx            8u161-b12-1ubuntu2   amd64        JavaFX/OpenJFX 8 - Rich client application platform for Java

I hope that helps !