Portal Activityreport - Aggregation not possible at least partially done

Question

Hi out there,
we are running EP 7 SP 10. I am trying to activate the Portal Activity Reporting and I have some problem with the aggregation. In the server.log I see an error message from com.sap.portal.activityreport.aggregator: "Aggregation not possible at least partailly done". Here some lines from the log file:
"08/10/2007","13:19:48:165","Aggregation took 63 millis",
"08/10/2007","13:19:48:165","Commit done",
"08/10/2007","13:19:48:149","SQL DELETE: DELETE FROM WCR_AGGINFO WHERE AGGREGATIONLEVEL = h AND  TIMESTAMPHOUR <= 1184152788117",
"08/10/2007","13:19:48:149","SQL DELETE: DELETE FROM WCR_WEBCONTENTSTAT WHERE AGGREGATIONLEVEL = h AND  TIMESTAMPHOUR <= 1184152788117",
"08/10/2007","13:19:48:149","SQL DELETE: DELETE FROM WCR_USERSTAT WHERE AGGREGATIONLEVEL = h AND  TIMESTAMPHOUR <= 1184152788117",
"08/10/2007","13:19:48:149","SQL DELETE: DELETE FROM WCR_USERNODELOGON WHERE TIMESTAMPHOUR <= 1186744788117",
"08/10/2007","13:19:48:134","SQL DELETE: DELETE FROM WCR_WEBCNODESTAT WHERE TIMESTAMPHOUR <= 1186744788117",
"08/10/2007","13:19:48:134","SQL DELETE: DELETE FROM WCR_USERNODESTAT WHERE TIMESTAMPHOUR <= 1186744788117",
"08/10/2007","13:19:48:134","Aggregation not possible at least partailly done",
"08/10/2007","13:19:48:134","First run at 10 Aug 2007 11:00:00 GMT",
"08/10/2007","13:19:48:118","query = SELECT MAX(TIMESTAMPHOUR) FROM WCR_AGGINFO WHERE AGGREGATIONLEVEL = h",
"08/10/2007","13:19:48:118","*********** Aggregating data from 1 Jan 2004 00:00:48 GMT to 10 Aug 2007 11:19:48 GMT ***********",
"08/10/2007","13:19:48:118","",
"08/10/2007","13:19:48:118","Current Database Time: 10 Aug 2007 11:19:48 GMT",
"08/10/2007","13:19:48:102","Aggregator Started...",
I have raised log and trace levels like mentioned in OSS 1054145 to get more information. But maybe anyone can already give me a hint how to hunt this down?!?
Best Regards
Juergen Kuechle.

Answer 1

Hi Juergen
From the error description,  I can see that the problem you have with activity report is due to 'DuplicateKeyException ' .
The error message above indicates that the Aggregator is trying to
insert to the database data which has already been aggregated.
The data already exists in the WCR_* database tables due to a previous
aggregation which has failed, stopped its work, and hasn't deleted the
raw data yet. The next time an Aggregator will run, it will try to
re-insert the already-inserted value.
The failure could occur due to variety of reasons, starting improper
functionality of the Aggregator and ending with a momentarily
disconnection to the database.
The common reason for this exception usually occurs on a clustered
environment, where every server node runs an aggregator of its own.
AN UPDATE:
A fix was implemented starting from NW04-SP21 / NW04s-SP13.
WORKAROUND :
  The suggested workaround for this matter would be to access the DB and
  delete the specific problematic duplicated record from the relevant
  table (WCR_WEBCNODESTAT in this case).
  If there are more than one problematic entries, you will notice it again
  within the next hour's trace file, and will need to perform the deletion
  process again.
  In case there are a lot of duplicated records  this might consume a lot
  of time. In this case we would recommend to either delete records per
  timestamp or to delete all the content from the DB tables and start
  over. This solution is applicable only if you do not need the data that
  was gathered up to now. (you do so by going over all the DB tables which
  start with WCR and delete the contained data).
As mentioned in Note 1054145 to fix this problem
Regards,
Nitin Mehra