Posted on Saturday, March 7, 2015 SQL Developer ORDS administration "peer not authenticated" error Category Oracle SQL Developer If your web server use self signed certificate for https you most probably get "peer not authenticated" error when you try administrate Oracle REST Data Service (ORDS) using Oracle SQL Developer. To resolve this issue, you need import server certificate to Java cacerts keystore. You can download server certificate e.g. using browser. In this example I use Firefox. First navigate to your server URL and click lock icon next to URL. From popup click More Information. From opening window click View Certificate Click Details tab and then Export button Change the ‘Save as type’ to ‘X.509 Certificate with chain (PEM)’ and save the certificates to a file. Open command prompt and import certificate to Java cacert keystore. Please note that you need import certificate to Java installation/version witch SQL Developer uses. Here is example of command how import certificate in Windows C:\sqldeveloper\jdk\jre\bin\keytool.exe -import -noprompt -trustcacerts ^ -alias vbox-apex.localdomain ^ -file C:\Temp\vbox-apex.localdomain.crt ^ -keystore C:\sqldeveloper\jdk\jre\lib\security\cacerts ^ -storepass changeit Now administrating Oracle REST Data Service using Oracle SQL Developer over https works.