How to update RHN errata information for subscribed systems - Red Hat Customer Portal

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Issue

The customer want to know when update RHN errata information after a package update. Could you please investigate RHN update timing?
I checked following update timings.
- yum command updates the errata information immediately.
- rpm command DON'T updates the errata information.
- rhnsd service updates a errata list at a fixed interval. (default: every 4 hours)
- rhn_check command updates a errata list.
Is there any other update timing?

Environment

Red Hat Enterprise Linux

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