Database Integrity Check Options

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ClearSCADA performs regular checks on the database to ensure that the integrity of the data is maintained. These checks occur one per hour while the server is running.

There are a number of tests that the server will perform as part of the integrity check and the list of tests to be run is configured via the registry.

The HKEY_LOCAL_MACHINE/Software/Schneider Electric/ClearSCADA/DB/IntegrityCheckOptions (DWORD) setting allows an administrator to configure the default checks to perform. This setting has no effect on the integrity check done at database startup as all tests are run on database startup.

Test Name	Value	Description
ICO_Modules	0x001	Checks integrity of CDBModule classes. NOTE: If this fails, the server is put in config failed state.
ICO_ObjectMap	0x002	Checks invalid deleted objects, permits and class mismatches.
ICO_Indices	0x004	Checks indices of objects maintained by each class.
ICO_Objects	0x008	Checks each allocated object and all permits for errors.
ICO_ReferenceFields	0x1000	Checks Reference Fields
ICO_SearchMaps	0x2000	Checks Object Search Maps
ICO_ObjectUpdateMap	0x010	Checks updates for valid source and target in object maps.
ICO_HistoricLoadedGranules	0x020	Checks historian and event journal.
ICO_AlarmSourceMap	0x040	Checks for valid objects and types in alarm source map.
ICO_ObjectIndices	0x080	Checks foreign keys.
ICO_Instances	0x100	Checks template Instances.
ICO_DataTables	0x200	Checks Data Tables
ICO_Metadata	0x0400	Checks Metadata
ICO_GeoSpatialIndex	0x4000	Checks GeoSpatial Index
ICO_AlarmSuppression	0x0800	Checks Alarm Suppression

NOTE: This table is ordered in how they are displayed in the Check Integrity dialog in Server Icon

On database startup, the default (read from the key "StartupIntegrityChecks") is ICO_Modules, ICO_ObjectMap, ICO_Indices, ICO_Objects, ICO_ObjectUpdateMap and ICO_GeoSpatialIndex.

The default background integrity check (read from the key "IntegrityCheckOptions") are all except ICO_HistoricLoadedGranules, ICO_Instances, ICO_DataTables and ICO_Metadata.

The default options which are ticked if you do a manual check by right clicking on your server icon are also all except ICO_HistoricLoadedGranules, ICO_Instances, ICO_DataTables and ICO_Metadata. These defaults are not controlled by registry entries.

A ClearSCADA server restart is needed for changes in the registry to take effect.

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