Hi Thorsten,
Thanks for your info, it's much appreciated.
Thisis what we found out:
We had an "alter table add colmn" on that day but it was around 9:06 and the first crash occurred at 11:28. We had four more crashes which occurred around 1h after each other.
Can it be that those crashes occur in that way?
Fortunately I found all the KnlMsg from that day in our backup and I can confirm that they all contain the same "Symbolic stack backtrace", indicating it was always the same crash from what I understand.
Unfortunately I've been told that we can not do more live tests with our main instance to diagnose things, but we would like to try to reproduce this with one of our less important instances. They already run 7.9 and we can try things there.
What do you suggest to try there? Doing "alter table add col" on a large table and then updates immediately while the db is loaded with other tasks? I guess there must be a certain condition met for the crash to happen.
Regards,
Simon