Der Pat! I run "strace -o 1.log yum update"... After I grep: [root@nf ~]# cat 1 | grep exp Last line is: open("/usr/lib64/python2.6/lib-dynload/pyexpat.so", O_RDONLY) = 10 I run: [root@nf ~]# ldd /usr/lib64/python2.6/lib-dynload/pyexpat.so /usr/lib64/python2.6/lib-dynload/pyexpat.so: /u01/app/oracle/product/11.2.0/dbhome_1/lib/libexpat.so.1: no version information available (required by /usr/lib64/python2.6/lib-dynload/pyexpat.so) linux-vdso.so.1 => (0x00007fff67b25000) libexpat.so.1 => /u01/app/oracle/product/11.2.0/dbhome_1/lib/libexpat.so.1 (0x00007f8f9a94e000) libpython2.6.so.1.0 => /usr/lib64/libpython2.6.so.1.0 (0x00007f8f9a589000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f8f9a36c000) libc.so.6 => /lib64/libc.so.6 (0x00007f8f99fda000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f8f99dd5000) libutil.so.1 => /lib64/libutil.so.1 (0x00007f8f99bd2000) libm.so.6 => /lib64/libm.so.6 (0x00007f8f9994e000) /lib64/ld-linux-x86-64.so.2 (0x00007f8f9ac8c000) I think my problem caused with /u01/app/oracle/product/11.2.0/dbhome_1/lib/libexpat.so.1. When I can change library for /usr/lib64/python2.6/lib-dynload/pyexpat.so to /lib64/libexpat.so.1? Thank you! Sorry for my english. 2012/7/25 Pat Riehecky <[log in to unmask]> > On 07/25/2012 03:33 AM, Roman Kravets wrote: > >> Hello! >> >> As result, how I can to avoid this problem? >> Do not install expat.i686? >> >> Thank you! >> > > Can you be more specific? > > -- > Pat Riehecky > Scientific Linux Developer > > -- С уважением, Кравец Роман.