User Guide

Table Of Contents
Troubleshooting Historical Data Server Data
Historical Data Server is losing the oldest data
Symptom:
Historical Data Server (HDS) data that is within the data retention time set for the HDS is being
purged from the database.
Message:
None
Cause:
This could occur because the database has reached 80% capacity and is therefore performing
purge adjustment each night to reduce the size to 80%. Unlike scheduled purges, in which data
is purged nightly to remove all records older than the data retention time you specied, purge
adjustment removes the last record from each table in the database until 80% capacity is reached.
Purge adjustment continues to reduce the size of the database to 80% until the database size is
increased.
Action:
To correct this, increase the size of the database.
Historical report is missing data for a recent interval
Symptom:
A historical report is missing data for a recent interval.
Message:
None
Cause:
This could occur because you are running the report at the end of the last interval (for example
it is 12:31 and you are running a report from the 12:00:00 to 12:29:59 interval). Data replication
from the Logger to the Historical Data Server can be delayed by 1 to 5 minutes. The data for
the last interval might not be in the HDS yet.
This could also be because the Logger connected to the HDS has gone ofine or because the
Logger went ofine and is now in the process of recovering. When the Logger fails, the HDS
does not switch to the back up Logger. Instead, it waits for its Logger to recover. When the
Logger recovers, it begins receiving current data and recovers data from the back up Logger
Reporting Guide for Cisco Unified ICM Enterprise & Hosted Release 7.2(1)
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Chapter 11: Troubleshooting Report Data
Troubleshooting Historical Data Server Data