Oracle JDK is now paid software. Is SapphireIMS registered with Oracle? If yes, then we will not have to pay additionally to purchase/use JDK. Or does SapphireIMS run on Open JDK?

We have not registered with Oracle for JDK usage. From SapphireIMS patch SAPP_5006 onwards, we have migrated to Redhat OpenJDK and it is free to use and distribute without any obligations. We recommend customers who are at lower patch level should get upgraded to latest patch.

Please note that customers are still entitled to use Oracle JDK which we have shipped in older SapphireIMS patches but if customer wishes to adopt security updates released recently on JDK software, then costing factor will come and in that case we strictly recommend to upgrade to latest SapphireIMS patches.