Dears, I tried https://apim.docs.wso2.com/en/latest/install-and-setup/setup/distributed-deployment/configuring-wso2-identity-server-as-a-key-manager/#step-1-download-and-install-wso2-is to use oracle db as shared_db between wso2 api manager and identity server and got this error ? just created databases and set deployment config based on the document.
nullType class java.lang.reflect.InvocationTargetException
org.wso2.carbon.user.core.UserStoreException: nullType class
java.lang.reflect.InvocationTargetException