[CR #403972] Prior to Adaptive Server Enterprise12.5.3 ESD#2 release, Adaptive Server was able to automatically switch to using Posix Async i/o on Linux versions not supporting Posix interface to KAIO. SuSE discontinued support for librtkaio starting from SLES 9 Service Pack 1.
Due to the CR 376419 fix in Adaptive Server Enterprise 12.5.3 ESD#2, the server incorrectly reports that Adaptive Server is using KAIO while it is using Posix AIO on SLES 9 SP1. This can lead to unexpected behavior in Adaptive Server Enterprise.
Workaround: Adaptive Server Enterprise should be booted with traceflag 1630 on SLES 9 SP1 to explicitly enable Posix async i/o.
