Safe to use i686 and x64 versions of same package at same time?

[tsorvoja]

Hi,
Could using i686 and x64 versions of same package introduce problems later? Currently my system is 64bit , but some apps require i686 versions of already installed x64 packages. Thanks.

[kurzer]

There should be no problem. For 32bit applications you need the i686 packages. By the way, I think most 64bit installations have also a lot of 32bit packages installed.
Check for example with

rpm -qa | grep i686