64-Bit - JDK
The installation of Oracle WebLogic Server 12.1.3 for 64-bit platforms does not include the 64-bit JDK. Therefore, prior to installing Oracle WebLogic Server 12.1.3 for 64-bit platforms, you must manually download and install the requisite JDK. For the latest information about the specifically supported JDK, refer to the Oracle Fusion Middleware 12c Infrastructure product on Oracle Certification.
Additionally, JD Edwards EnterpriseOne requires that a 64-bit JDK be installed so that the \bin directory of the JDK is located at the beginning of the PATH variable definition.