Weblogic 12.1.3 JPSS Is it forcibly required to have an owned database schema per each weblogic 12.1

Hello Community

Is it forcibly required to have an own database schema per each weblogic 12.1.3 domain? meaning the following :

I have a WLS 12.1.3  product installation (oracle weblogic common infraetructure)

I created a WLS domainA , it required me database schema with the RCU created , I created and it works fine

I need a new WLS domainB on the same server (for development) , on this domainB Im planning to move the security realm (myrealm) to SQLAuthenticator since It is my understanding that there is only one default realm to be used per domain, here Im planning to deploy an ADF Security web app portal and so on