Hi Elaye,
we had a similar issue with our environment and we had raised a high priority ticket with SAP and the reply we got from SAP is that DS 1.5 and DS 1.5 SP01 has some issues with SSO and told us to update with the Patch with is scheduled to release next week. Kindly find the Notes and response from SAP below
Reply from SAP regarding the SSO issue
I just had a conversation with our development team who confirmed that
this is an issue introduced with DS 1.5 SP 1.
The good news is that they already have identified and fixed the
issue. The bad news is that it needs to be delivered in a patch (it
will be DS 1.5 SP 1 Patch 1) which is going to be available in
approximatelly 2 weeks.
In case you cannot live with the issue, that is, keep restarting the
services from time to time, please downgrade your Design Studio BIP
AddOn and Client to 1.5 SP 0.
SAP Note#2199260 - Design Studio: Datasource connections are not cleaned up after session timeout occurs
Regards,
Bala