Hi all, Once in a while I need to erase / clean / reset Koha database, and with this I mean to remove bibliographic and authority records (leaving systempreference intact). Some years ago it works just TRUNCATE TABLE biblio, biblioitems, items; then with foreign key constraint the harder DELETE FROM biblio; seems to do the job. cleaning all other tables in cascade. But now (with Koha v3.16) I just want to say that *Appendix F. Resetting the Koha Database <http://manual.koha-community.org/3.16/en/resetkohadb.html>* might be not exactly right, but with this trick <http://stackoverflow.com/questions/5452760/truncate-foreign-key-constrained-table> (disable foreign key constraint checks) seems to work: *SET FOREIGN_KEY_CHECKS=0;TRUNCATE TABLE biblio;TRUNCATE TABLE biblioitems;TRUNCATE TABLE items;TRUNCATE TABLE auth_header;TRUNCATE TABLE sessions; TRUNCATE TABLE zebraqueue;SET FOREIGN_KEY_CHECKS=1;* And of course then: *koha-rebuild-zebra --verbose --full $(koha-list)* Am I right? This could be risky, having side effects? Regards, Pablo