Many thanks to a great customer for having me add this to the blog…
We’ve recently run into this and it’s pretty much benign, but annoying. The apar’s not new (2010), but our version of Hacmp did not have the apar in it. Only caveat I found is that it appears this subsystem is still required for Oracle 9i (which explains why it’s not part of the standard release of hacmp).
IZ86787: PREVENT EMAIXOS (HARMAD) FROM RUNNING IN HACMP ON AIX 6.1
This is a code change in RSCT to stop running the emaixos
subsystem (harmad process) in PowerHA clusters on AIX 6.1.
See APAR IZ47424 for more background.
While existing levels of PowerHA may still be supporting
applications which are dependent on the RSCT subsystem
“emsvcs” (haemd process), its supporting subsystem “emaixos”
(harmad process) is not needed even on those clusters.
This harmad process has also been the source of most of the
recent incompatability issues with the latest levels of
AIX 6.1, generating error messages or core dumps which demand
attention and time from system admins even though the process
itself no longer provides useful services.