Cannot insert duplicate key in ddm.log

Question

Hello,
I have been noticing the below on many occasions:
*** IF EXISTS (select ItemKey from DiscItemAgents where ItemKey = 278482 and DiscArchKey = 5 and AgentID = 15 and AgentSite = 'auto') update DiscItemAgents set AgentTime = '07/31/2014 16:26:11'  where ItemKey = 278482 and DiscArchKey = 5 and AgentID =
15 and AgentSite = 'auto'~ ELSE insert into DiscItemAgents (AgentTime, ItemKey, DiscArchKey, AgentID, AgentSite) values ('07/31/2014 16:26:11', 278482, 5, 15, 'auto')
SMS_DISCOVERY_DATA_MANAGER
8/1/2014 5:53:01 AM 4104 (0x1008)
*** [23000][2627][Microsoft][ODBC SQL Server Driver][SQL Server]Violation of PRIMARY KEY constraint 'DiscItemAgents_PK'.
Cannot insert duplicate key in object 'dbo.DiscItemAgents'. The duplicate key value is (278482, 15, 5, aut).
SMS_DISCOVERY_DATA_MANAGER 8/1/2014 5:53:01 AM
4104 (0x1008)
CDiscoverySource_SQL::UpdateItem - could not execute sql- IF EXISTS (select ItemKey from DiscItemAgents where ItemKey = 278482 and DiscArchKey = 5 and AgentID = 15 and AgentSite = 'auto') update DiscItemAgents set AgentTime = '07/31/2014 16:26:11'  where
ItemKey = 278482 and DiscArchKey = 5 and AgentID = 15 and AgentSite = 'auto'~ ELSE insert into DiscItemAgents (AgentTime, ItemKey, DiscArchKey, AgentID, AgentSite) values ('07/31/2014 16:26:11', 278482, 5, 15, 'auto')
SMS_DISCOVERY_DATA_MANAGER 8/1/2014 5:53:01 AM
4104 (0x1008)
CDiscoverDataManager::ProcessDDRs_PS - Unable to update data source
SMS_DISCOVERY_DATA_MANAGER 8/1/2014 5:53:01 AM
4104 (0x1008)
I then ran a query in SQL based on error Cannot insert duplicate key in object 'dbo.DiscItemAgents'. The duplicate key value is (278482, 15, 5, aut) : select * from DiscItemAgents where ItemKey = '278482'
I got the result stating that the record has AgentSite as 'aut'
Now when I check distinct values for AgentSite column I am able to see all site code values that are present in the hierarchy.
I, then ran a query to find the no of rows for AgentSite = 'aut'. It returned me 7 which are some client machines.
To resolve, when I run this sql query, DDM starts working fine: Delete from DiscItemAgents where AgentSite = 'aut'
Now I am wondering what makes a client send a DDR with SiteCode as 'aut' and not the assigned or reporting site code? How can I resolve this, without having to run the delete statement?
Thanks
Rajiv

Answer 1

ok, We were using a custom client health solution that was creating a DDR with the site code as AUTO. The DDR process only accepts 3 digit code, which was causing the DDM to fault. Reinstalling the agent and re-configuration of the client health solution
seems to have fixed the issue.
Thanks, Rajiv