Need Oracle 12c whitepaper recommendation for upgrade assessment

Hi: Good morning!
This is not an urgent request, but appreciate your recommendation! I need documents about Oracle 12c (our os is IBM AIX power system, 6.1, 64 bit), because we are planning upgrade current oracle database 11.2.0.4 to 12c, we need a thorough assessment to 12c since 12c introduced many innovative, new features, major component changes, as well as impact to java application. The document I have so far is-
1. database upgrade guide
http://docs.oracle.com/database/121/UPGRD/preup.htm#UPGRD002
2. Deprecated API (oracle database JDBC Java API Reference)
https://docs.oracle.com/database/121/JAJDB/deprecated-list.html
3. Tom Kytes Top 12 new features for Oracle 12c (from web).
There are many things to look for. I want to know the major things I should focus in new features & impact to java application.
what document can provide me the info!
thank you very much in advance!

Hi all:
Can anyone gives me advice after upgrade from 11.2.0.4 database to 12c database, which 'core-DB new features' impact to Java application more, and that we should focus on assessment?
There are too many new & innovative features introduced in 12c. Should I convert our single instance database (on non-cluster server) to 'CDB/PDB' during upgrade? Is it a 'Must-to-do' or not? We have a physical standby DB, how to do with the standby?
Oracle Documents I reviewed are: 'Oracle 12c database document', 'Oracle 12c Java Developer's Guide'. I recommend this to our developers based on 'Oracle 12c Java Developer's Guide':
Oracle JVM ( JDK6, JDK7 support in 12)
[note:need to check jvm components for application: library manager, compiler, interpreter, class loader, server-side JDBC internal driver, server-side SQLJ, translator, system classes; Java stored procedure, SQLJ, JDBC, etc]
2. Oracle Memory Space management      (         garbage collection)
3. Multithreading
4. Footprinting
5. Dynamic class loading
6. JNDI class support
7. Auditing for Java ( alert/execute/audit/grant is enabled in auditing)
8. Support for logging
9. Support for customizing default java.security resource
10. Improved for debugging
However, I may lost myself in core-DB new features for:
1. advanced analytics features
2. OLAP features
3. Partitioning enhance
4. Performance for zero effort
5. Compression and Archiving features (depends on application tables design)
6. Database Overall
   - Integrate With Operating System Processor Groups
   - Oracle Data Pump Support
   - Multitenant Architecture (Not sure)
   - PDBs Backup and Recovery (Not sure)
   - PDBs Point-in-Time Recovery (Not sure)
   - PDBs Resource Plans (Not sure)
   - Utilities
7. High Availability
   - Application Continuity
   - Transaction Guard
   - Logical Replication
   - Global Data Services
   - Online Operations
   - Oracle Data Guard Enhancements (Depends on our standby design)
8. Manageability
   - PGA Size Limit
   - Resource Manager Runaway Query Management
   - Spot ADDM
9. General
   - DBMS_QOPATCH
10. Performance
11. Security enhance
12. Improve Security Manageability, Administration and Integration
    - Database vault
Is my above suggestion (text in red-color) correct?
Thank you very much!

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