Date: Thu, 21 Dec 2017 12:37:53 -0300
From: Alvaro Herrera <alvherre@alvh.no-ip.org>
To: "op12om@yahoo.co.in" <op12om@yahoo.co.in>
Cc: "santiagocfc@gmail.com" <santiagocfc@gmail.com>,
	Devrim =?iso-8859-1?B?R/xuZPx6?= <devrim@gunduz.org>,
	Pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: Couldn't create plperl language
Message-ID: <20171221153753.gdhcuupppvchx2td@alvherre.pgsql>
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Om Prakash Jaiswal wrote:
> I installed RHEL7.3 64 bit is enterprise version.Downloaded postgresql9.6.3 64 bit for Linux.Installed in /opt directory.
> RPM -ivh postgresql9.6-plperl96.rpm.Find libperl.so. it was at /usr/lib64/perl5/CORE directory.vi /etc/ld.so.conf.d/libperl.conf < /usr/lib64/perl5/CORE ldconfig
> vi /etc/ld.so.conf.d/libpostgres.conf</opt/postgres/9.6/lib
> reboot machine.Now create extension plperlu.Error /opt/postgres/9.6/lib/postgresql/plperl.so undefined symbol: Perl_save_strlen.

Most likely this indicates that the plperl.so is compiled against a
different version of Perl than the one that provides libperl.so.

I don't understand what you installed (or rather, you did not say), but
I suspect you have a weird (unsupported) combination of packages.

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services