class: ELFCLASS64 at /usr/lib64/perl5/XSLoader.pm line 70.

In R12 when we try to start the forms server,Below is the error encountered.

=============================================
*** Latest formsapp.ear has been deployed ***
=============================================


Program : /apps/EBSPROD/apps/apps_st/appl/fnd/12.0.0/patch/115/bin/txkChkFormsDeployment.pl completed @ Thu May  8 10:43:26 2014

Perl script txkChkFormsDeployment.pl got executed successfully



adformsctl.sh: exiting with status 0

adformsctl.sh: check the logfile /apps/EBSPROD/inst/apps/EBSPROD_dxbhoebzapp2/logs/appl/admin/log/adformsctl.txt for more information ...


.end std out.
Can't load '/usr/lib64/perl5/auto/Sys/Hostname/Hostname.so' for module Sys::Hostname: /usr/lib64/perl5/auto/Sys/Hostname/Hostname.so: wrong ELF class: ELFCLASS64 at /usr/lib64/perl5/XSLoader.pm line 70.
 at /usr/lib64/perl5/Sys/Hostname.pm line 23
*** ALL THE FOLLOWING FILES ARE REQUIRED FOR RESOLVING RUNTIME ERRORS
*** Log File = /apps/EBSPROD/inst/apps/EBSPROD_dxbhoebzapp2/logs/appl/rgf/TXK/txkChkFormsDeployment_Thu_May_8_10_43_25_2014/txkChkFormsDeployment_Thu_May_8_10_43_25_2014.log


FIX
===

Check below two varaibles in the CONTEXT_FILE, 
PERL5LIB
ADPERLPRG

They should point to  below variable, Please check the below

Mofiy them in CONTEXT_FILE as below

From 

  <ADPERLPRG oa_var="s_adperlprg" osd="unix">/usr/bin/perl</ADPERLPRG>

To 

         <ADPERLPRG oa_var="s_adperlprg" osd="unix">/apps/PROD/apps/tech_st/10.1.3/perl/bin/perl</ADPERLPRG>

From 

        <PERL5LIB oa_var="s_perl5lib" osd="LINUX_X86-64">/usr/local/lib64/perl5:/usr/local/share/perl5:/usr/lib64/perl5/vendor_perl:/usr/share/perl5/vendor_perl:/usr/lib64/perl5:/usr/share/perl5:.:/apps/PROD/apps/apps_st/appl/au/12.0.0/perl:/apps/PROD/apps/apps_st/appl/au/12.0.0/perl</PERL5LIB>

To 

         <PERL5LIB oa_var="s_perl5lib" osd="LINUX_X86-64">/apps/PROD/apps/tech_st/10.1.3/perl/lib/5.8.3:/apps/PROD/apps/tech_st/10.1.3/perl/lib/site_perl/5.8.3:/apps/PROD/apps/apps_st/appl/au/12.0.0/perl:/apps/PROD/apps/tech_st/10.1.3/Apache/Apache/mod_perl/lib/site_perl/5.8.3/i686-linux-thread-multi</PERL5LIB>