internal db sessions cleanup

[BR894093]

We're using dp5.5 (incl. all patches) to work with a HP SureStore 2/20 tape library.

For different backups we have defined different expiry limits (e.g. 17 days, 10 days).

According to the Administrator Guide 'the catalogue protection for all object versions on the medium must expire before the file version records are purged', including a cleanup of obsolete sessions. However, if my session has an expiry limit of 17 days, and the 17th day has passed, the session is not cleaned up automatically..

I'm kinda lost how to configure that my session(s) are automatically cleaned up once they reach the expiry limit.. Can anyone be of any assistance?

Rgds, Niels.