NETCA fails on 11g client installation

NETCA on Oracle 11g client installation fails on RHEL 4 with the following error

UnsatisfiedLinkError exception loading native library: njni11

java.lang.UnsatisfiedLinkError: jniGetOracleHome
        at oracle.net.common.NetGetEnv.jniGetOracleHome(Native Method)
        at oracle.net.common.NetGetEnv.getOracleHome(Unknown Source)
        at oracle.net.ca.NetCA.main(Unknown Source)
Oracle Net Services configuration failed.  The exit code is -1   

To rectify this install libaio-devel and libaio rpms on the machine.