If you have the compiler installed on AIX® V5.3,
you might want to migrate the operating system to AIX V6.1 or later to take advantage of the latest IBM® POWER® technology.
The compiler filesets are not OS specific and do not require migration
if COBOL for AIX,
V4.1 is installed
on AIX V5.3 and the operating
system is migrated to AIX V6.1
or later. If an OS specific fileset is required in the future for
a higher level of AIX, it will
be identified in an IBM Technical
Note tied to the PTF that will add support for that version
of AIX.
Remember: When an AIX V5.3
machine is migrated to AIX V6.1,
the AIX V5.x C++ runtime fileset
xlC.aix50.rte is
uninstalled, and the AIX V6.1
C++ runtime fileset
xlC.aix61.rte is installed
from the AIX V6.1 install image.
The service level of the AIX V6.1
C++ runtime on the install image might be different from the service
level of the AIX V5.x C++ runtime
on your machine before migration. This means that after an OS migration,
all PTFs applied to the C++ runtime before OS migration are gone,
and then have to be re-installed. If the AIX V6.1
C++ runtime is at a different version, you can download the latest
runtime updates from
Fix Central.