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ION Enterprise Vista Query Timeout

Goals and Symptoms

How to increment the timeout of a query in Vista

Facts and Changes

Vista query error
Vista timeout
Operation incomplete DBReg_fecth, DBreg_results
Vista query Timeout expired

Causes and Fixes

When a query runs in Vista the following error messages are displayed.

 Error = Timeout Expired 



There is a difference between on how Vista and WebReach execute a query of a data/waveform/event recorder.
In Webreach there is timestamp filter. This filter will only return data for the specified range consequently the query runs fast.
In Vista it will query the entire DB for that one meter; if the ION_Data database size is large the query may time out.
In order to increase the timeout period of a Vista query, a new entry to the registry of ION_SERVER need to be added and the Query server connect timeout should be increased.
A.  Increase the Vista query timeout
1. Select Start > Run then type regedit in the Run window to open the registry
2.  Within the registry, navigate to HKEY_LOCAL_MACHINE\Software\Power Measurement\ION Enterprise\5.X
3.  Right click in the right hand pane and select New > DWORD Value
4.  Name the new DWORD: VistaQueryTimeout_s
5.  Right click on VistaQueryTimeout_s and select Modify
6.  Enter a new value for the timeout period.  The timeout period is 60s by default so its is recommendable to doubling its value to 120s (120 decimal) if this is not enough increase it to 180
7.  Select File > Exit to exit the registry editor
If the system include client machines running Vista this change need to be performed into the client's machine registry as well.
B- Increase the Query server timeout
1. Open the Query Server node in Designer.
2. Open the properties for the Query module.
3. Modify the Connect_Timeout from the default 60 to 120 (or 180 if it is necessary). 4. Save this setting and restart the Query Server Service


  • Original article#12679

    Last Revised: 9-Nov-06


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