Just following up ... I finally got a script to work that loops through all biblios calling BiblioAddsAuthorities. It is very slow however since it calls rebuild_zebra.pl every time a new authority is added (it took 10 hours to link ~12000 biblios). But for our purposes it does what we want really well. It extends some existing/fantastic Koha code to a batch job for a task (adding authorities) that is otherwise non-trivial (as far as I can tell). We manage our own authorities in-house. To make the script work there were 3 technical issues: 1) Call rebuild_zebra.pl every time a new authority is added. This is required for SimpleSearch to be able to find a recently added authority. I used perl fork/exec/waitpid for this. 2) Re-indexing zebra was not enough to make SimpleSearch "see" recently added authorities. The connection to zebra had to be reset. For this I used the set_context, and restore_context interface. It appears that when you have an active Context, and even if you rebuild_zebra, that context encapsulates a stale Zebra index. So you need to create a new Context in which to do your SimpleSearch, and then recycle that one (so you don't run out of system resources). 3) For a long running script it appears that set_context, and restore_context does not cleanup all open file handles, so I had to work around a system error "no files left" or something like that. To do that I used a shameless hack. I wrote a .csh script to call my perl script so that it processes only 100 biblios at a time. That way when perl exits each time, the system resources (stale file handles, etc.) are recycled. Of course it is possible that there is a problem with my script, but the hack worked around it and I was in a hurry. I'd be happy to share the script with anyone who is interested. I'm not sure what the policy is on refactoring Koha code and posting it. It only works for MARC21 format - not sure what if anything would need to be done for UNIMARC. Thanks for all of your help, Pete. btw. this is one of the first perl script I have ever written, so it is not slick if you know what I mean :) -- View this message in context: http://koha.1045719.n5.nabble.com/bulk-BiblioAddsAuthorities-tp3378000p37894... Sent from the Koha - Discuss mailing list archive at Nabble.com.