Oracle Instant Client Installation Libaio.so.1:cannot Open Shared Object file____oracle

Install Oracle Instant client locally, download, extract, configure environment variables, execute sqlplus, and the error is as follows:

[Root@abc ~]# Sqlplus
Sqlplus:error while loading shared libraries:libaio.so.1:cannot open Shared object file:no such file or directory
[Root@abc ~]# which sqlplus
/usr/local/instantclient_11_2/sqlplus
[Root@abc ~]# Ldd/usr/local/instantclient_11_2/sqlplus
Linux-vdso.so.1 => (0x00007fff8b381000)
libsqlplus.so =>/usr/local/instantclient_11_2/libsqlplus.so (0x00007f79c4005000)
libclntsh.so.11.1 =>/usr/local/instantclient_11_2/libclntsh.so.11.1 (0x00007f79c1695000)
libnnz11.so =>/usr/local/instantclient_11_2/libnnz11.so (0x00007f79c12c8000)
Libdl.so.2 =>/lib64/libdl.so.2 (0x00007f79c10c0000)
Libm.so.6 =>/lib64/libm.so.6 (0x00007f79c0e3b000)
libpthread.so.0 =>/lib64/libpthread.so.0 (0x00007f79c0c1e000)
Libnsl.so.1 =>/lib64/libnsl.so.1 (0x00007f79c0a05000)
Libc.so.6 =>/lib64/libc.so.6 (0x00007f79c0671000)
/lib64/ld-linux-x86-64.so.2 (0x00007f79c41eb000)
Libaio.so.1 => not found
[Root@abc ~]#

Download an RPM package "libaio-0.3.107-10.el6.x86_64.rpm" on the Internet, install:

[Root@abc instantclient_11_2]# RPM-IVH libaio-0.3.107-10.el6.x86_64.rpm
Warning:libaio-0.3.107-10.el6.x86_64.rpm:header V3 rsa/sha256 Signature, key ID C105b9de:nokey
Preparing ... ########################################### [100%]
1:libaio ########################################### [100%]
[Root@abc instantclient_11_2]#
[Root@abc instantclient_11_2]# which sqlplus
/usr/local/instantclient_11_2/sqlplus
[Root@abc instantclient_11_2]# Sqlplus

Sql*plus:release 11.2.0.4.0 Production on Mon Sep 30 03:37:29 2013

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Enter User-name: ^c
[Root@abc instantclient_11_2]#