i am using ubuntu 12.04 with koha 3.20 root@saut-HP-Pro-3400-Series-MT:/home/koha-3.20.13# sudo -u koha misc/migration_tools/rebuild_zebra.pl -b -r - Zebra configuration information ================================ Zebra biblio directory = /var/lib/koha/zebradb/biblios Zebra authorities directory = /var/lib/koha/zebradb/authorities Koha directory = /usr/share/koha/intranet/cgi-bin Lockfile = /var/lock/koha/zebradb/rebuild/rebuild..LCK BIBLIONUMBER in : 999$c BIBLIOITEMNUMBER in : 999$d ================================ skipping authorities ==================== exporting biblio ==================== Records exported: 0 ==================== REINDEXING zebra ==================== ==================== CLEANING ==================== i think the problem Lockfile = /var/lock/koha/zebradb/rebuild/rebuild..LCK how to solve the problem root@saut-HP-Pro-3400-Series-MT:/var/lock/koha/zebradb/rebuild# ls -laR .: total 4 drwxr-xr-x 2 koha koha 80 Aug 10 12:01 . drwxr-xr-x 5 koha koha 100 Aug 10 11:00 .. -rw-r--r-- 1 koha koha 23 Aug 5 15:13 README -rw-r--r-- 1 koha koha 0 Aug 10 13:12 rebuild..LCK root@saut-HP-Pro-3400-Series-MT:/home/koha-3.20.13# sudo service koha-index-daemon start * Starting Koha indexing daemon (koha) [ OK ] root@saut-HP-Pro-3400-Series-MT:/home/koha-3.20.13# sudo /usr/share/koha/bin/koha-zebra-ctl.sh start Starting Zebra Server please help where is the problem please help -- regina