[ruby-dbi-users] DBI 0.4.0 & DBD::Pg gem installation issues

Erik Hollensbe erik at hollensbe.org
Tue Sep 30 01:41:55 EDT 2008

On Monday 29 September 2008 12:31:55 Michael Glaesemann wrote:
> irb(main):005:0> require 'pg'
> LoadError: libpq.so.5: cannot open shared object file: No such file or
> directory - /usr/lib64/ruby/gems/1.8/gems/pg-
> 	from /usr/lib64/ruby/gems/1.8/gems/pg-
> 	from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in
> `require'
> 	from (irb):5
> irb(main):006:0>
> [grzm at db05 ~]$ ls -la /usr/lib64/ruby/gems/1.8/gems/
> pg-
> -rwxr-xr-x 1 root root 131132 Sep 19 12:19 /usr/lib64/ruby/gems/1.8/
> gems/pg-
> Any help or further debugging pointers would be much appreciated.

It looks like the 'pg' library did not install correctly, or for some reason 
it can't dlopen libpq. I just throw bugs in their direction occasionally, and 
do not work on the project itself.

http://rubyforge.org/projects/ruby-pg should be the place to report such 
things; be certain to give them the output of ldd and a test case that 
doesn't involve DBI, as it seems DBI's shoddy error reporting is the only 
issue here (which has a long, outstanding ticket that I should get around to 

Hope that helps,


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