rhnpush does not work when uploading a RPM package to multiple channels

Issue

• The rhnpush command does not work when uploading a RPM package to multiple channels

for i in $(ls -1 *rpm)
   do
       rhnpush  -vvvv -u admin -p redhat -c manual-channel-1  \
               -c manual-channel-2 -c manual-channel-3 -c manual-channel-4 \
               -c manual-channel-5 --force --no-session-caching \ 
               --server=satellite.example.com $i &
    done

• The error message is:

Error Message:
    ERROR:  deadlock detected
Error Class Code: 23
Error Class Info: Could not update database entry.

[Fri Mar 14 10:04:55 2014] [error] [client 10.13.213.230] mod_wsgi (pid=23023): Exception occurred processing WSGI script '/usr/share/rhn/wsgi/sat_dump.py'.
[Fri Mar 14 10:04:55 2014] [error] [client 10.13.213.230] IOError: failed to write data
[Fri Mar 14 10:58:54 2014] [error] [client 10.13.213.230] mod_wsgi (pid=23718): Exception occurred processing WSGI script '/usr/share/rhn/wsgi/sat_dump.py'.
[Fri Mar 14 10:58:54 2014] [error] [client 10.13.213.230] IOError: failed to write data