Thank you for your reply but I was actually wondering if WebLogic (10.3.6) will support Java 8 along with any documentation supporting this.
Answer to your question is No. We can not use java 8 with WLS 10.3.6
Weblogic support for java 8 starts with version 12.1.3.
For version 10.3.6, we can use the updates in JDK 7.
Certification matrix page in MOS confirms the same.