[OAI-implementers] How many records should typically be returned over OAI-PMH?

Dan Stowell d.stowell at ucl.ac.uk
Wed Feb 2 06:26:39 EST 2005

Thanks - but yes, I'm aware of the resumptionToken - I just wanted to know 
whether there's a de facto standard for how many records to return in a 
single response, before giving the resumptionToken.


At 21:51 02/02/2005 +1100, Baden Hughes wrote:

>OAI-PMH has a flow control mechanism [1], which, if followed, allows the 
>use of a resumptionToken for handling larger data sets. This is widely 
>implemented in OAI tools.
>[1] http://www.openarchives.org/OAI/2.0/openarchivesprotocol.htm#FlowControl
>On Wed, 2 Feb 2005, Dan Stowell wrote:
>>I'm implementing OAI-PMH and at first I decided that my system could 
>>easily return 2000 records in a single OAI-PMH request. Unfortunately the 
>>"OAI Repository Explorer" doesn't seem to be able to cope with that much 
>>data since it ended up having timeout and too-much-data errors.
>>I've now reduced that number to 500 and my repository now validates 
>>happily. But is there a rule of thumb for how many records it's "polite" 
>>to return, or how many a typical OAI-PMH harvester "expects" to have to 
>>deal with?
>>Dan Stowell
>>Faculty Information Support Officer (Life Sciences), UCL
>>Room B07A, Drayton House, 30 Gordon Street, London
>>Phone: +44 (0)20 7679 5472      (within UCL: dial 25472)
>>Email: d.stowell at ucl.ac.uk
>>OAI-implementers mailing list
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