[OPEN-ILS-GENERAL] Limits on numbers of attached items?

[Jason Stephenson]

Quoting Tony Bandy <tonyb at ohionet.org>:

> Hi all,
>
> Working with our consortium, specifically related to setting policies, etc.
> does anyone know of the limit of attached items on bibliographic records?
>  My notes indicate 2,000, but tracking down where that came from is proving
> elusive....anyone know of the limits?

The only limit that I am aware of is the size of a MARC record is  
limited to 99,999 bytes. If you export a MARC record with holdings in  
the 852 or other tag, depending on the amount of data in the other  
fields, you can quickly run out of room for holdings.

There may be other, system-dependent limitations on how many copies  
you can reasonably attach to a bib, such as the time it takes to  
retrieve all the data and return to the client, the amount of RAM on  
the client and the efficiency or inefficiency of trying to display  
2000 copies, etc. These, however, will vary depending on the hardware  
of the servers, the quality of the network connection, the hardware on  
the client, even the client O/S can make a difference.



>
> Thanks in advance for your thoughts....
>
> Tony
>
> *******************************************
> Tony Bandy
> tonyb at ohionet.org
> OHIONET
> 1500 West Lane Ave.
> Columbus, OH  43221-3975
> 1-800-686-8975 x19
> ********************************************
>



-- 
Jason Stephenson
Assistant Director for Technology Services
Merrimack Valley Library Consortium
Chief Bug Wrangler, Evergreen ILS