在RedHat 6.2 64位上面安裝postgresql84遇到的問題及解決過程

[root@bogon postgresql]# rpm -ivh postgresql84-libs-8.4.19-1PGDG.rhel6.x86_64.rpm 
warning: postgresql84-libs-8.4.19-1PGDG.rhel6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 442df0f8: NOKEY
error: Failed dependencies:
        libcrypto.so.10(libcrypto.so.10)(64bit) is needed by postgresql84-libs-8.4.19-1PGDG.rhel6.x86_64

        libssl.so.10(libssl.so.10)(64bit) is needed by postgresql84-libs-8.4.19-1PGDG.rhel6.x86_64

百度,谷歌了好多,沒能找到什麼有用的信息

有的說須要安裝openssl,但是系統裏面已經有了,安裝的話會提示有衝突

warning: openssl10-libs-1.0.1e-1.ius.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 9cd4953f: NOKEY
Preparing...                ########################################### [100%]
        file /usr/lib64/libcrypto.so.10 from install of openssl10-libs-1.0.1e-1.ius.el6.x86_64 conflicts with file from package openssl-1.0.0-20.el6.x86_64
        file /usr/lib64/libssl.so.10 from install of openssl10-libs-1.0.1e-1.ius.el6.x86_64 conflicts with file from package openssl-1.0.0-20.el6.x86_64
        file /usr/lib64/openssl/engines/lib4758cca.so from install of openssl10-libs-1.0.1e-1.ius.el6.x86_64 conflicts with file from package openssl-1.0.0-20.el6.x86_64
        file /usr/lib64/openssl/engines/libaep.so from install of openssl10-libs-1.0.1e-1.ius.el6.x86_64 conflicts with file from package openssl-1.0.0-20.el6.x86_64
        file /usr/lib64/openssl/engines/libatalla.so from install of openssl10-libs-1.0.1e-1.ius.el6.x86_64 conflicts with file from package openssl-1.0.0-20.el6.x86_64

這可怎麼辦呀?安裝就這麼難嗎?下面我慢慢解決此事,會將結果放過來,也但願高手能幫忙看一下是什麼問題引發的