This is for BSSV development and local deployment. My local JAS WebLogic instance runs under a 32bit JDK which is what the ER debugger is connecting too. Also, one other thing I had to do. My local JAS WL instance runs under 32bit JDK 1.8.0_231. When I initially installed JDeveloper using the same JDK I had issues. Found another Oracle doc and I had to install JDK 1.8.0_131 (32 or 64 bit) for the JDeveloper IDE to run correctly.
So when fully running I have
JAS WebLogic 12.2.1.3 running under 32bit JDK 1.8.0_231
JDeveloper/Integrated WebLogic BSSVs running under 64bit JDK 1.8.0_131
While I'm at it. You will, at a minimum, need to apply the following patches to JDeveloper once installed.
p28186730_139422_Generic.zip - Update OPatch
p27073329_122130_Generic.zip - Fixes bug with running a simple POJO as a Java Process
Just confirmed the above config is correct and I was able to still Debug ER code with both my JAS and JDeveloper/WL(64bit) instance running. I have also been able to do check out/in of BSSVs in OMW, I have been able to call consumer BSSVs from JDE (APPL->BSFN->BSSV). Have not tested published BSSVs yet.