As I wrote few days ago, Peoplesoft on Linux 64-bits is now supported on OEL5.2 min (and also RHEL) from Peopletools 8.49.14 and higher.
The Peoplesoft binaries are the same for 64-bits and 32-bits OS.
So, you could either install the same Peoplesoft (application binaries and Peopletools binaries) you already have for your 32-bits Linux, or much more simple, just copy the entire PS_HOME over the network.
There is no issue about that.
The slight difference is for the Oracle libraries.
Do not forget, Peoplesoft is still working with in the 32-bits Oracle libraries, so you have to create a link to the 32-bits librairies inside the 64-bits folder.
If on a 32-bits OS you have to create the following link :
[oracle@orion2:/apps/oracle/product/11.1.0/lib]$ ln -s $ORACLE_HOME/lib/libclntsh.so.11.1 libclntsh.so.9.0
On a 64-bits Oracle binaries, it must be the following :
[oracle@orion2:/apps/oracle/product/11.1.0/lib]$ ln -s $ORACLE_HOME/lib32/libclntsh.so.11.1 libclntsh.so.9.0
Apart from that, everything is same and works fine.
This migration could be a good step before managing the coming Peopletools 8.50 upgrade, because it has been told the Peopletools 8.50 will be a real 64-bits application, moreover it seems it will be supported only on Linux 64-bits, the certification on a 32-bits Linux system will be retired.
Read pages 34 and 43 of PeopleTools Roadmap - OOW 2008
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