I'm getting these exceptions from the JNDI/SPI (from sun) connecting to an iPlanet Dir Server 5.0. And I get them under pretty lightly loaded scenarios.
 
As I understand it, this maps to one of LDAP error codes 51 (busy) or 52 (unavailable). I only have 50 connections being created during about 45 seconds and only 10 concurrent threads doing a total of 641 reads. So this is a very light load and I'm supprised that the server could be busy or unavailable.
 
I've also noticed have noticed a big difference between our dir server running on a Solaris box and the one on my NT workstation. Believe it or not, the test on my NT workstation can survive for much longer (15 minutes) than when run against the UNIX server before encountering the error.
 
So it appears to be a problem at the LDAP server. Perhaps some tuning I need to do. But I would assume the server could handle such lite loads with the out-of-the box setttings.
 
Any ideas anyone?    

Jonathan McClure
Software Architect
Wheelhouse Corporation
35 Corporate Drive  |  3rd Floor
Burlington, MA 01830

phone 781.505.3205  |  fax 781.505.3001
www.wheelhouse.com

 

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