ervan:~# tail -f /var/log/blog

Error :

ervan:/usr/lib # zypper
zypper: error while loading shared libraries: libsasl2.so.2: wrong ELF class: ELFCLASS64

ervan:/usr/lib # yast -i
Error while creating client module sw_single

Effect :
Cannot install package with yast and zypper

How To Fix :

- Checking

ervan:/usr/lib # ls | grep libsasl2.so.2
libsasl2.la
libsasl2.so
libsasl2.so.2
libsasl2.so.2.0.22
libsasl2.so.2.0.23
ervan:/usr/lib # ldd /usr/bin/zypper
libzypp.so.523 => /usr/lib/libzypp.so.523 (0xb7afe000)
libreadline.so.5 => /lib/libreadline.so.5 (0xb7ac6000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb79d2000)
libm.so.6 => /lib/libm.so.6 (0xb79a9000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb799a000)
libc.so.6 => /lib/libc.so.6 (0xb783e000)
librt.so.1 => /lib/librt.so.1 (0xb7833000)
libpthread.so.0 => /lib/libpthread.so.0 (0xb7819000)
libutil.so.1 => /lib/libutil.so.1 (0xb7815000)
libdbus-1.so.3 => /lib/libdbus-1.so.3 (0xb77d3000)
librpm-4.4.so => /usr/lib/librpm-4.4.so (0xb773d000)
libhal.so.1 => /usr/lib/libhal.so.1 (0xb772a000)
libhal-storage.so.1 => /usr/lib/libhal-storage.so.1 (0xb771d000)
libcurl.so.4 => /usr/lib/libcurl.so.4 (0xb76da000)
libxml2.so.2 => /usr/lib/libxml2.so.2 (0xb7586000)
libz.so.1 => /lib/libz.so.1 (0xb7571000)
libexpat.so.1 => /lib/libexpat.so.1 (0xb7549000)
libcrypto.so.0.9.8 => /usr/lib/libcrypto.so.0.9.8 (0xb73e2000)
libncurses.so.5 => /lib/libncurses.so.5 (0xb73a4000)
/lib/ld-linux.so.2 (0xb7f3d000)
librpmdb-4.4.so => /usr/lib/librpmdb-4.4.so (0xb729c000)
librpmio-4.4.so => /usr/lib/librpmio-4.4.so (0xb71ba000)
libdl.so.2 => /lib/libdl.so.2 (0xb71b5000)
libbz2.so.1 => /lib/libbz2.so.1 (0xb71a5000)
libpopt.so.0 => /lib/libpopt.so.0 (0xb719b000)
libselinux.so.1 => /lib/libselinux.so.1 (0xb717e000)
libuuid.so.1 => /lib/libuuid.so.1 (0xb7178000)
libidn.so.11 => /usr/lib/libidn.so.11 (0xb7145000)
libssl.so.0.9.8 => /usr/lib/libssl.so.0.9.8 (0xb70fb000)
libldap-2.4.so.2 => /usr/lib/libldap-2.4.so.2 (0xb70b6000)
libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0xb7089000)
libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0xb6fea000)
libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0xb6fc3000)
libcom_err.so.2 => /lib/libcom_err.so.2 (0xb6fbf000)
libkeyutils.so.1 => /lib/libkeyutils.so.1 (0xb6fbb000)
libresolv.so.2 => /lib/libresolv.so.2 (0xb6fa4000)
liblber-2.4.so.2 => /usr/lib/liblber-2.4.so.2 (0xb6f94000)
 libsasl2.so.2 => not found
libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0xb6f8b000)

Conclusions : libsasl2.so.2 is broken, we need to create symbolink link to another exist libsasl2.so.

- Resolving

ervan:/usr/lib #rm -rf libsasl2.so.2
ervan:/usr/lib #ln -s ./libsasl2.so.2.0.22 ./libsasl2.so.2