In Oracle Application Express we can specify instance wide image prefix ( we provide this when installing APEX or later if we run apex/utilities/reset_image_prefix.sql ). Purpose of this blog post in not to explain what image prefix is, but if you would like to know more about it, then I recommend that you read a blog post from Joel Kallman - Image Prefix changes in Oracle Application Express 4.2.2
My blog post is about what we need to do, if we are changing image prefix and at the same time we are using Oracle REST Data Services (ORDS) in standalone mode. If we need to change image prefix, first thing is to run apex/utilities/reset_image_prefix.sql script and here we specify new image prefix - for example /i_test/
I find this warning very useful. It's telling us that we have to verify that we have copied images directory to right location and also that our new path is /i_test/. In case when we are using ORDS in standalone mode there is no need to copy anything, but we need to adjust standalone.static.context.path parameter in ORDS standalone.properties configuration file.
After this change, do a restart of ORDS and that is it.