Operating system migration

If you have the compiler installed on AIX® 5.3, you might want to migrate the operating system to AIX 6.1.

The compiler filesets are not OS specific and do not require migration if XL C/C++ V11.1 is installed on AIX 5.3 and the operating system is migrated to AIX 6.1 or higher. If an OS specific fileset is required in the future for a higher level of AIX, it will be identified in a Tech Note tied to the PTF that adds support for that version of AIX.

Note: When an AIX 5.3 machine is migrated to AIX 6.1, the AIX 5.x C++ runtime fileset (xlC.aix50.rte) is uninstalled, and the AIX 6.1 C++ runtime fileset (xlC.aix61.rte) is installed from the AIX 6.1 install image. The service level of the AIX 6.1 C++ runtime on the install image might be different from the service level of the AIX 5.x C++ runtime on your machine prior to migration. This means that after an OS migration, any PTFs applied to the C++ runtime before OS migration is gone, and then has to be re-installed. If the AIX 6.1 C++ runtime is at a different version, you can download the latest runtime updates from Fix Central.