How to get ready for Online Patching?

An Oracle E-Business Suite Release 12.2 installation now includes two editions (versions) of the application code
and seed data. The file system contains two complete copies of the Oracle E-Business Suite and technology
files. In the database, we use the Edition-based Redefinition feature to create a new database edition for each
online patching cycle.
The “Run Edition” is the code and data used by the running application. The Run Edition includes a complete
application-tier file system along with all objects and data visible in the default edition of the database. As a
developer, you will connect to the Run Edition whenever you are engaged in normal development activity on the
system.
The “Patch Edition” is an alternate copy of Oracle E-Business Suite code and seed data that is updated by
Online Patching. The Patch Edition includes a complete copy of the application-tier file system and editioned
database code objects. The Patch Edition is only usable when an Online Patching session is in progress. End
users cannot access the Oracle E-Business Suite Patch Edition, but as a developer you may need to connect to
the Patch Edition of a system when applying patches or debugging problems with Online Patch execution.