description: Data Controller contains a number of admin-only web services, such as DB Export, Lineage Generation, and Data Catalog refresh.
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# Admin Services
Several web services have been defined to provide additional functionality outside of the user interface. These somewhat-hidden services must be called directly, using a web browser. The URL is made up of several components:
This service will provide a zip file containing the current database configuration. This is useful for migrating to a different data controller database instance.
The data is stored with SCD2 so you can actually **track changes to your model over time**! Curious when that new column appeared? Just check the history in [MPE_DATACATALOG_TABS](/mpe_datacatalog_tabs.md).
The `&libref=` parameter is optional - if you want to run the process just for a single library.
When doing a full scan, the following LIBREFS are ignored:
* 'CASUSER'
* 'MAPSGFK'
* 'SASUSER'
* 'SASWORK
* 'STPSAMP'
* 'TEMP'
* `WORK'
Be aware that the scan process can take a long time if you have a lot of tables. Also, note that if a library refresh crashes (due to invalid connection properties), you can exclude it from the subsequent refresh process by adding the `LIBREF` (pipe-separated) to the `DCXXXX.MPE_CONFIG` table (where `var_scope='DC_CATALOG' and var_name='DC_IGNORELIBS'`).