Troubleshooting change impact analysis
When you trigger impact analysis from a change request, the process of calculating the impact takes a long time to return the results or the impact analysis is not triggered at all.
Issue symptoms
In BMC Helix ITSM, the Simulation Status field displays the Analysis in Progress status for a long time, and the following message is displayed.
Additionally, the impact analysis is not calculated.


Issue scope
You open a change request in BMC Helix ITSM and click More > Initiate Impact Analysis.
Resolution
Follow the steps given below to check the impact simulation functionality.
Task | Action | Steps |
|---|---|---|
1 | Check if the CMDB Impact Simulator is working. |
If the CMDB Impact Simulator does not work in the CMDB Portal, collect the following log files and contact BMC Customer Support:
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2 | If the CMDB Impact Simulator is working in the CMDB Portal, but the models have more than 1000 results. | Fine tune the performance. For more information, see CMDB Impact Simulator performance best practices. |
3 | If the CMDB Impact Simulator is running in the CMDB Portal, but not in BMC Helix ITSM, and a relevant CI record is present in the AIS:Simulation and AST:Simulation Status forms. |
For additional information, see the Change Request impact analysis is never complete article on BMC Communities. |
4 | If the CI is not present in the AIS:Simulation form. | Perform the following steps to check if there is an issue with the AIS plugin and the plugin configuration:
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5 | If the CI is not present in the AIS:Simulation form and the impact analysis is enabled for BMC Helix ITSM. |
For more information, see Running an impact simulation. |
6 | If the CI is available on the AIS:Simulation and the AIS:Simulation_Status forms, but the simulation status is stuck at Analysis Completed. | Perform the following steps to set the value of the Simulation Status field to Relationship Assessment Completed and complete the simulation in Smart IT :
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7 | In a server group environment, if different servers return inconsistent results. | If the servers return inconsistent results in a server group environment, follow the steps given in the AIS does not work reliably in Server Group Environments article on BMC Communities. Additionally, see Relating-items-to-the-change-request. |



