Hi
I'm trying to install a patch p2517300_9014_LINUX on Redhat Linux 7.1 with kernel 2.4.2-2enterprise verion on Oracle 9.0.1.0 to upgrade to 9.0.1.4 version. But when it's asking to check for required OS Specific patches are already installed or not. Can any one let me know how to check in Linux for the patches which are already installed?? any commands/file which tells us about the installed patches ?? If the required patches are not available, then should i download it from linux.com and install? Please help me, i've to do it on production machine... I'm in the mid way

Many Thanks in advance