High swap utilization when running Oracle 9i

[Dirk Gfroerer <Dirk Gfroerer guh-software de>]

I've migrated a machine from RHEL3 to RHEL4 which is serving four Oracle 
9i databases. Before the migration the machine was hardly using any 
swap. No suprise here, since the database parameters were set in a way 
that all four databases did fit into the 2GB RAM.

However I did have to add the following line into /etc/sysctl.conf for RHEL3

vm.pagecache = 1 10 20

This has been discussed in depth on the Taroon list. My question is now, 
do I have to set the same parameter in RHEL 4? Or is there a new kernel 
parameter which has to be tweaked in order to prevent the database and 
its buffers being paged out to disk? I thought this "issue" was solved 
in the 2.6 kernel series. But obviously I'm wrong.

Thanks,
Kind Regards,
Dirk