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Upgrading OS from 5.2 to 5.3

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Operating Systems AIX Upgrading OS from 5.2 to 5.3
# 1  
Old 01-25-2010
Upgrading OS from 5.2 to 5.3
We currently have test and production servers running AIX 5.2, DB2 8.1(Prod), DB2 8.2(Test),Websphere 6.1 on both. We need to upgrade to DB2 to version 9, but to do that we also need to upgrade the operating system to 5.3 and go from 32 bit kernel to 64 bit kernal. Looking for information on any issues that I need to be aware of when doing this. So far my research has found that I can run our current versions of DB2 and Websphere. Any changes to configurations that will need to be made after the OS upgrade? Any issues that I need to be aware of? Thank you.
# 2  
Old 01-25-2010
Hi,

you will entirely have to redo the tuning, and you might run into shared memory trouble with 64bit running 2 shared memory hungry applications in parallel.

Kind regards
zxmaus
# 3  
Old 01-26-2010
Be carefull this package:

devices.common.IBM.mpio.rte 5.2.0.0 - Its sucks! Smilie

If you not commit everything you will suck the 5.3 next TL upgrade! Smilie
5.3 has reach TL 11 Smilie You need a lot of free space.

Commit every package in the 5.2!! Smilie

An alt_disk_install would be better.
# 4  
Old 01-26-2010
Thank you both for the information. I will let our installer know. Anybody else?
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