How to change Z3950 record retrieval limit

• Article Type: General
• Product: Aleph
• Product Version: 18.01

Description:
When we query our Aleph Z3950 server, we can retrieve a maximum of 1000 records for a specific search. How can we raise this limit ? What table settings do we have to change?

Resolution:
This limit is actually the same as the limit used on searches done in the GUI. The default is 1000 hits. This can be increased to a value up to 20000. The parameter (set_result_set_limit) is set in the pc_server_defaults table, located in $alephe_root. This environmental variable would look like this, for example:

setenv set_result_set_limit 5000

This would raise the limit to 5000. If you don't currently have an entry for set_result_set_limit in your table, the default is being used.

You should be aware that increasing will have an effect on performance for both the z39_server and the pc_server, so you should do some testing if you plan to increase it.

• Article last edited: 10/8/2013