Hi there,

We are using 3 x Zenworks 6.5 SP2 on Netware 6.5 Sp8 serves (DNS round robin) for purely for midtier authentication only. Zen Management Agent on desktops, ie clientless are used to authenticate users to these midtier servers.

After a few days, midtier authentication failed and the problem midtier server has to be rebooted. The error log in apache shows multiple entries of the following:

[Thu Jul 22 22:10:25 2010] [error] [client xx.xx.xx.xx] (2)Argument list too big: XTIER: missing hmac, realm, or session in authorization header: /oneNet/ZEN-ADD

We have gone through all the points specified in the TID 3668084 Troubleshooting authentication through Middle Tier but to no avail. Authentication to oneNet/nsadmin url just hang. Unloading and reloading nldap.nlm did not resolve this issue. Rebooting the server fixes the issue but problem will re-appear in 3 to 4 days time. Server (brand new IBM x3550 M2 model with 8GB RAM) utilisation is low with less than 300 concurrent connections.

Any help or feedback is appreciated.


Liu Yeo