You can find the necessary list of libraries here Oracle ASMLib Downloads for Red Hat Enterprise Linux 5 AS and also there is description how to obtain the correct libraries.
You can also use udev rules ORACLE-BASE - UDEV SCSI Rules Configuration for ASM in Oracle Linux 5 and 6 as alternative.
Thanks for responding, Ivica Arsov!
I already checked Oracle ASMLib Downloads for Red Hat Enterprise Linux 5 AS. But I am not sure which option to choose from the following:
- Intel IA32 (x86) Architecture
- Intel EM64T (x86_64) Architecture
- Intel IA64 (Itanium2) Architecture
- IBM Power Architecture
- IBM zSeries Architecture