THREAD(2) unexpected error from select()
Sanjay Parbhoo
5-21-18
Hi

I have a customer that is getting the following line in the log, which brings the server to a standstill and stops work altogether.

2018-05-21 14:47:54 /THREAD(2) unexpected error from select(), retval=-1, errno=0 (Unknown error)

It eventually clears and everything seems fine. This only started yesterday and nothing has changes in their system.

thanks
Leave Comment
You can subscribe to notifications for this post by selecting the 'star' icon on the top right corner of the post.
Latest Posts
Paul Timms
I've found an issue which I'm trying to find the best way to resolve. An integrated proof of delivery system sends two pieces of data to the SERP API, in two separate calls - let's c...
17:59 20 Feb 2026
Andis Blicāns, Grasko
There are some topics in this Q&A related to this question, but none of them is about Idle users - Concurrent or Named. If timeout minutes are specified in Optional Features, then all idle users are...
15:53 18 Feb 2026