After enabling the ICU option manually, it's not working for my huge data until I deleted the most of the biblio records. I tried following links/articles to configure ICU: • http://www.scribd.com/doc/45190333/ICU-Support-in-Zebra • And http://kohageek.pbworks.com/w/page/31484686/zebra%20configuration%20for%20re... Then only difference was, I modified <icu_chain locale="en"> to blank <icu_chain locale=""> instead of <icu_chain locale="en_IN.UTF-8">. As I am not sure what to do with locale for other languages So, 1 - I am getting these warining? Although I have already renamed my default.idx located at /home/koha/koha-dev/etc/zebradb/etc (i hope this is the right location) ==================== REINDEXING zebra ==================== 12:22:45-10/01 zebraidx(2057) [warn] Unknown register type: 0 12:22:45-10/01 zebraidx(2057) [warn] Unknown register type: n 12:22:45-10/01 zebraidx(2057) [warn] Unknown register type: y 12:22:45-10/01 zebraidx(2057) [warn] Unknown register type: d 2 - Right after that I have this warning [warn] previous transaction didn't reach commit 3 - I deleted the records upto just 9000. Now zebra started to index other languages. Why it is working only on this small set of data? Do i need to define any escape sequence somewhere for some special characters. I am using 3.08.00.001 on Debean VM I hope this is the right command to re-index. koha@koha:~$ export PERL5LIB=/home/koha/kohaclone/ koha@koha:~$ export KOHA_CONF=/home/koha/koha-dev/etc/koha-conf.xml koha@koha:~$ /home/koha/kohaclone/misc/migration_tools/rebuild_zebra.pl -b -r -v -- Thanks & Best Regards, Waqar Azeem