An important consideration for a migration, particularly for the database tier, is the "endian-ness" of a platform. This refers to the way data is represented for a particular hardware and operating system, mainly the order in which bytes are stored in a word for memory addressing, networking, file storage, etc. A "big endian" platform stores the most significant byte first (i.e. starting at the lower address) while a "little endian" platform stores the least significant byte first.
The "endian-ness" of platforms can be checked by querying the view V$TRANSPORTABLE_PLATFORM using sqlplus (connected as sysdba):
SQL> select platform_name, endian_format from v$transportable_platform;
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