The Generated Report Displays The Message "The Requested Data Is Not Available; You Receive The Message "Servername Is Unknown Host - IBM E027SLL-H - Tivoli Monitoring - PC Troubleshooting Manual

attribute that is not being displayed. Go to the Tivoli Enterprise Portal console and
validate that this column contains data and, if the issue is with summarized data,
that summarization is enabled for this attribute.
Another reason might be that you have not configured historical collection when
you installed and configured the monitoring agent or that not enough time has
passed for Tivoli Data Warehouse to collect the data for your requested report time
period before you tried to generate an historical report with Tivoli Common
Reporting. If you do not see the historical collection icon (a clock) in the workspace
in Tivoli Enterprise Portal, then data has not been collected in Tivoli Data
Warehouse.
The solution might require changes to the persistent datastore, the z/OS repository
for short-term historical data. Those changes should be made using the
Configuration Tool.
The generated report displays the message "The requested data is not
available"
In this scenario, you complete the report parameters window to generate a report
and click Submit. After clicking Submit, you see a blank report page with no
graphed or tabular information and the error message The requested data is not
available is displayed in the message area.
When you check version levels, you find that Tivoli Data Warehouse is your data
source, but none of the requested columns in the Tivoli Enterprise Portal attribute
table contain data.
This indicates that no data is being collected in Tivoli Data Warehouse. Verify this
by querying the same table in the database or by requesting data from the
matching workspace, for this time period, in the Tivoli Enterprise Portal. If, for
example, your installation stopped collecting historical data for this report 8 days
ago, and you query the last 7 day, no data will be returned. If the managed
resource (for example, a TN3270 Server or a CICS
no data can be collected.
To address the time period issue, expand the time period for your query. To correct
the resource availability issue, ensure that the managed resource is online and your
agent is collecting data for it.
The solution might require changes to the persistent datastore, the z/OS repository
for short-term historical data. Those changes should be made using the
Configuration Tool.

You receive the message "serverName is unknown host"

This error message is displayed as red text at the bottom of a report. Although this
error can occur for several reasons, the most common problem is incorrectly
entering the Tivoli Data Warehouse database URL into the data source for the
report. If some reports are working and others are not, the URL was entered
incorrectly. If no reports are working, contact those within your organization who
installed the product for the correct URL.
®
Region) were taken offline, then
Chapter 15. Tivoli Common Reporting troubleshooting
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