For increased reliability, in certain specific circumstances, Extended Parallel Server can suspend a thread that has failed an assertion instead of shutting down the entire database server.

Thread suspension is part of the fault isolation strategy that the database server uses. If a problem thread is isolated, the other threads in the process can continue their work.

In addition to increasing database server stability, this feature improves problem diagnostics. Because the suspended thread still exists, you can examine it to help diagnose the problem.

For more information on threads, see the chapter on parallel database queries in your IBM Informix: Performance Guide.

Thread Suspension