how do i export all scenes to ORBX or OCS. when i try to export in animation panel. it gives me a abc format
This will changein the next release, but at the moment, Export Animation gives you an ABC file (with no materials) - so is of limited value (although there is an Octane Standalone script to render the entire aninmation - and, vertice motion blur will render in Octane 2 using this option). The other option is to open the Viewport, then rightclick settings "Export to OCS" - then you can export to OCS or ORBX. The current OCS/ORBX export option is only for a single frame.
The next version of the plugin will allow you to export OCS/ORBX from the "Export Animation" button - and that exported Octane scene will contain the animated geometry in an ABC node - with all materials connected.