SCCM data import process and source tables
Summarize
Summary of SCCM data import process and source tables
The ServiceNow platform supports Microsoft SCCM versions with consistent features and data import processes.
The SCCM data import is managed by a scheduled job namedSCCM System
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Key Features
- Data Import Process: MID Server imports SCCM data into staging tables; transforms map this data to CMDB tables.
- SCCM Source and Target Tables: Various SCCM tables (e.g., vGSComputerSystem, vGSDisk, vGSNetworkAdapterConfiguration) correspond to specific staging tables and target CMDB tables such as cmdbcicomputer, cmdbcidisk, cmdbcinetworkadapter, cmdbcispkg, and cmdbsamswinstall (when Software Asset Management is enabled).
- Data Sources and Transform Maps: JDBC data sources define connection details and MID Server assignments. Transform maps link SCCM fields to CMDB fields and include two incremental software import maps—one for standard use and one for environments with Software Asset Management enabled.
- User Assignment: The import attempts to match and assign users to CIs by comparing SCCM user names with ServiceNow sysuser records, controlled by a system property for the matching field.
- Identification and Reconciliation: SCCM integration uses resource IDs for CI identification, leveraging the Identification and Reconciliation Engine (IRE) to update or create CIs based on resource ID matches. Upgrades from pre-Geneva versions require enabling a system property to use new identifier rules.
- Software Reconciliation: The integration reconciles software package counts, removing software instances from the CMDB when uninstalled in SCCM. Depending on plugin activation, software data populates appropriate tables.
Practical Considerations for ServiceNow Customers
- Ensure the MID Server is correctly configured to retrieve SCCM data on schedule or demand.
- Review and maintain transform maps to correctly map SCCM data to CMDB fields, especially when enabling Software Asset Management.
- Use incremental imports for efficiency after an initial full import; to force a full import, clear the "Last run datetime" on the data source, but expect a longer execution time.
- Maintain accurate user assignment by verifying the glide.discovery.assignedusermatchfield property aligns with your user identification standards.
- Manage CMDB identifiers carefully during upgrades, enabling new identifier formats as needed to ensure reconciliation functions properly.
- Import complete SCCM data sets to avoid unintended deletion of active relationships in the CMDB.
The Microsoft SCCM versions supported in the ServiceNow® platform offer identical features and the same imported data.
Data import process
- A schedule called SCCM System <version> Import determines when the SCCM tables are imported into the ServiceNow® instance. Imports can be executed immediately or scheduled to run at defined intervals.
- A MID Server retrieves the SCCM data and imports it into staging tables on the instance.
- Transforms run on the data in the staging tables and map the SCCM data to existing fields in the CMDB.
SCCM data imported
| SCCM table | Staging table | CMDB table |
|---|---|---|
|
SCCM <version> Computer Identity [imp_sccm<version>_computer_id] | Computer [cmdb_ci_computer] |
| v_GS_Disk | SCCM <version> Disk [imp_sccm<version>_disk] | Disk [cmdb_ci_disk] |
| v_GS_Network_Adapter_Configuration | SCCM <version> Network [imp_sccm<version>_network] | Network Adapter [cmdb_ci_network_adapter] |
| v_GS_Operating_System | SCCM <version> Operating System [imp_sccm<version>_os] | Computer [cmdb_ci_computer] |
| v_GS_Processor | SCCM <version> Processor [imp_sccm<version>_processor] | Computer [cmdb_ci_computer] |
|
SCCM <version> Software [imp_sccm<version>_software] |
|
SCCM data sources
The ServiceNow® SCCM integration uses JDBC data sources to import software data from the SCCM database. Each data source contains the connection specifics for the SCCM database and names the MID Server the instance will use to import the data. The transforms that map the SCCM fields to the CMDB are defined in a related list in each data source record.
Transform maps
Transform maps are accessed from the Transforms related list in each data source record. The source fields in SCCM and the target fields in the CMDB are listed in the Field Maps related list in each Table Transform Map record. The SCCM integration uses the transform map utility provided with the ServiceNow® platform. For instructions on editing or creating a transform map, see Transform maps.
- Incremental Import: Enabled by default. This map should be configured as Active when ServiceNow® Software Asset Management is not enabled on the instance.
- Incremental Import (SAM enabled): If the Software Asset Management plugin is activated, set this transform to Active
Transforming the assigned user
The SCCM <version> Computer Identity transform script attempts to set the Assigned to field in the CMDB record by looking up the name of the user in the SCCM source table and comparing the value with the matching field in the ServiceNow sys_user table. If a match is found, that user is assigned to the record. If no match is found, the Assigned to field is left blank. The matching field is controlled by the glide.discovery.assigned_user_match_field system property, which is set to user_name by default.
Identifiers
The SCCM integration uses CI identification to update CIs created from data imported from SCCM with a resource ID. The Hardware Rule identifier returns the resource ID of a computer from SCCM and stores it in the Source [sys_object_source] table. When resource IDs are first imported, either from SCCM or Discovery, the [sys_object_source] table is populated with IDs for each CI it identifies. In subsequent imports, if an incoming ID matches that of an existing CI, IRE (Identification and Reconciliation Engine) updates the information for that CI in the CMDB. If the incoming resource ID does not match that of an existing CI, IRE creates a new CI and populates it with the resource ID.
For more information about CMDB Identification and Reconciliation and IRE, see CMDB Identification and Reconciliation.
Upgrades from pre-Geneva versions still preserve the legacy identifiers, but you can switch
to the new identifiers using a property:
glide.discovery.use_cmdb_identifiers. If you upgraded from a pre-Geneva
version, you must manually add this property and set it to true to
use the new identifiers. If you upgraded from Geneva, this property is available in the
System Properties [sys_properties] table. To preserve functionality in custom legacy
identifiers, convert them to the new CMDB identifier rules format before enabling this
property. The system does not reconfigure your custom identifiers to the new framework
automatically.
Scripts
Data population scripts populate the related data in the CMDB for each target CI discovered by the Hardware Rule identifier.