22 Dec
2014
22 Dec
'14
12:29 a.m.
* Robert Heller:
This is the reason *RedHat* Enterprise Linux is never recomended to do upgrades across major versions. The recomended practice is allways a fresh install.
That's mostly because Red Hat does not want to support such installations of unknown genealogy. Technically, in-place upgrades for most systems work, as long as you take care of the usual offenders (e.g., Berkeley DB, as Michael pointed out, and PostgreSQL).