Installing older Oracle software on OEL5/RH5

When starting runInstaller, and you get an Exception java.lang.UnsatisfiedLinkError: ...libXp.so.6 ... , then you have to install the compatibility library - xorg-x11-libs-compat.x.x.rpm, which can be downloaded at http://oss.oracle.com/projects/compat-oracle/files

OPMN failing with ../Apache/Apache/bin/httpd: error while loading shared libraries: libdb.so.2: cannot open shared object file: No such file or directory then you have to create a software link to as follow: ln -s /usr/lib/libgdbm.so /usr/lib/libdb.so.2