Something Wrong? no reason iristemp grow to ful disk

No reason apparently,

to many times executed :

[Database.SparseDBExpansion] Expanding capacity of sparse database /usr/irissys/mgr/iristemp/ by 1000 MB.

no details on audits, no traffic for that, no process to justify this, some ideas ?

IRIS for UNIX (Red Hat Enterprise Linux for x86-64) 2020.1 (Build 215U) Mon Mar 30 2020 20:23:13 EDT