Originally posted by: SystemAdmin

I have an lpar with a 32 bit kernal running. I would like to change it to 64 bit.
We have tested this and it works fine but we have not tested the 3rd party software after the change to 64 bit. The software is Oracle and Informatica, they are both running 64bit currently. My question is are we going to have any problems after the switch with Oracle or informatica?
#AIX-Forum

Originally posted by: dukessd

No way to tell without testing.
#AIX-Forum

Originally posted by: SystemAdmin

Loading informatica and oracle along with data would take alot of effort on our part. I was hoping someone here had some expierience with 32bit - 64bit kernal. Also maybe running Oracle or Informatica. We have tested the change from an OS perspective and it works fine.
#AIX-Forum

Originally posted by: SystemAdmin

Interesting results:

We built a test area lpar to load the systems mksysb. All went well but the system came up 64bit mode. We were thimking it would come up in 32bit kernal mode but no!!!
Definetly looked at the hardware and boot info being default and came up 64bit.
Just thought that was interesting.
#AIX-Forum

Originally posted by: SystemAdmin

Bump ...

Does anyone have any experience with this type of change? With or without oracle and informatica in the picture?
#AIX-Forum

Originally posted by: hdkutz

Hello,
to change from 32-bit to 64-bit do as root:

ln -sf /usr/lib/boot/unix_64 /unix
ln -sf /usr/lib/boot/unix_64 /usr/lib/boot/unix
lslv -m hd5
bosboot -ad /dev/ipldevice
shutdown -Fr

To change the kernel back to 32-bit do as root:

Monoprocessor:
ln -sf /usr/lib/boot/unix_up /unix
ln -sf /usr/lib/boot/unix_up /usr/lib/boot/unix
lslv -m hd5
bosboot -ad /dev/ipldevice
shutdown -Fr

Multiprocessor:
ln -sf /usr/lib/boot/unix_mp /unix
ln -sf /usr/lib/boot/unix_mp /usr/lib/boot/unix
lslv -m hd5
bosboot -ad /dev/ipldevice
shutdown -Fr

hth,
ku
#AIX-Forum