The description of this component is: This monitor returns the number of JET files (jet*.tmp) in C:\Windows\Temp which prevents new DB connections and causes polling to halt.
These files can be deleted. They usually stay in the system only because some app that uses access DB crashed and didn’t clean up after itself. If there’s 65K files, no more files can be created (they have 4 hex digits in name) and Orion won’t be able to open e.g. MIBs.cfg (OID database).