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Permanent loss of historical data can occur if the emergency purge removes historical data that
has not yet made it to an HDS and has also not replicated to the peer Logger that is 'down' or
in the recovery process.
Database used percentage is displayed as a normal status message in the replication process
every few minutes. You can occasionally monitor this value to make sure that is does not grow
too often or too fast. Emergency purge occurs when the percentage used is greater than the
congured value (usually 90%).
See also Troubleshooting Historical Data Server (page 153).
Data Loss from PIM Failure
The Peripheral Interface Manager (PIM) is the process on the Peripheral Gateway responsible
for the actual connection to the peripheral and for normalizing the CTI interface on behalf of
Unied ICM.
If a PIM fails, if the link between the PIM and the ACD goes down, or if the ACD goes down,
then all of the reporting data that has been gathered for the peripheral associated with the PIM
is deleted.
The state of all agents on that peripheral is set to logged out and is reported as such to the Router.
The Router has no way of determining what was going on at the ACD while the PIM was out
of contact with the ACD. When the PIM reconnects to the ACD, the ACDS do not send the
PIM sufcient information to allow the recording of accurate historical reporting data for the
half hour(s) in which the disconnect took place.
Note when the PIM reconnects to the ACD, most ACDs do pass information to the PIM about
each agents state and duration in that state. While this is not enough to allow accurate historical
reporting data to be recorded, it is enough to allow the Router to make accurate call routing
decisions.
When the PG is duplexed, either the Side A or Side B PIM is active for each peripheral. If one
side loses connection, the other comes up and activates.
Other Possible Points of Failover
Peripheral Gateway/CTI Manager Service Fail-over
If the agents PG shuts down or the CTI Manager service shuts down, the agent is momentarily
logged out. The agent might be logged in again automatically once the backup PG or CTI
Manager comes into service. The agent Media Logout Status reports for the agent, agent skill
group, agent team, and agent peripheral show a logout reason code of 50002.
Reporting Guide for Cisco Unified ICM Enterprise & Hosted Release 7.2(1)
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Chapter 10: Reporting Implications of Data Loss and Component Failover
Data Loss from PIM Failure