PurePaths older than two days not visible any longer
Hi,
Since yesterday I'm unable to view any dynaTrace data older than yesterday afternoon. First I thought that it might had to do with our performance warehouse settings (see screenshot below) and the clean-up task that runs every night, but shouldn't I be able to find PurePaths dating at least two weeks back with these settings? Any ideas for troubleshooting appreciated.
Mikael, is this in your test system? Since I believe there is people using the REST API there for test purposes where they might very well turn continuous session storage on and off can you check with your colleagues. I know Björn did some work around that (but he might be on paternal leave).
Hi Anders,
Yes it is, and yes Björn is on leave. We do use the REST API in our load tests to start and stop recording so we get the requests for a load test cycle in a specific stored session. That is probably the explanation to why this is switched off.
Sorry for learning these lessons "the hard way" 
Continuous Session Storage is on by default for several dynaTrace releases now. Maybe you unchecked it by accident?
Anyway - good to know that we solved that mistery
I took over this area from another person so likely the configuration has been there since he did the initial setup and switched it off for some reason.
Agree that it is good we found out! 
Hello and thanks for the reply.
I had misunderstood the concept of the performance warehouse. I understand now that PurePaths are not at all stored in there but in RAM or on disk depending on the setting you mentioned.
You were absolutely right we were not using Continuous Session Storage but we have enabled it now. Unfortunately the data is lost since we did not have this setting enabled but it was a valuable lessons learned for the future.
Regards,
Mikael
Hi
PurePaths are not stored in the Performance Warehouse but in the session storage on the file system.
There are two reasons I can think off
a) you are not using Continuous Session Storage - which allows dynaTrace to save all PurePaths automatically on disk
b) you are running out of Disk Space used by the Continuous Session Storage. In that case older PurePaths are automatically deleted
Have a look at the Settings tab in the Server Settings dialog. There you can see how much storage space you have configured and how much is actually available.
What I've also seen in the past is that customers end up withi a lot of stored sessions that also take away storage space from our continuous session storage. Open your Session Browser and see whether you have a lot of stored sessions that you may no longer need and delete them - or - if you still need them you can export them and store them somewhere else
Andi
