EMS Manual

Collector Event Messages
EMS Manual—426909-005
20-29
523: ZEMS-EVT-ACOL-EVENT-DISCARDS
ZEMS-TKN-SUBJECT-MARK (shared)
is the standard EMS token that immediately precedes each subject token. This
event message has one subject token:
ZEMS-TKN-COLLECTOR (nonshared)
specifies the collector type. This token can have only one value: ZEMS-SUBJ-
ACOLL (or 2).
ZEMS-TKN-ACOL-EVENTS-DISCARDS (nonshared)
contains a count of the number of events discarded by the alternate collector.
Cause. The alternate collector has recovered from event-flooding or has discarded
one or more invalid events (see 525: ZEMS-EVT-INVALIDEVENT on page 20-33). The
total number of events discarded is reported in the ZEMS-TKN-ACOL-EVENT-
DISCARDS field. Events can be discarded by:

A process might be looping, which can cause event-message flooding if the loop
generates an event message.

A forwarding distributor can cause flooding if the distributor forwards an event
message to the system that originally reported the event.

A message was sent to the alternate collector that is not a proper event message.

Logging stops, causing the alternate collector to run out of space in its pool (pool
size is determined by POOLPAGES). When the out-of-space condition occurs,
event messages can be discarded after they have been forwarded to all
distributors. When logging resumes, the alternate collector issues this event to tell
the operator the number of events discarded while logging was stopped.
Effect. The specified events were discarded.
Recovery. Evaluate the cause of the event flooding and perform one of these actions:

Cause the event generators to decrease the rate of event generation.

Change collector attributes to allow higher logging rates.

Reassign some of the events to other collectors.

Stop or fix the generator of invalid events.