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System views are located in the SYS schema. However, as public synonyms of all views exist, it is not necessary to specify the schema name when you query these views.

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Example

select * from objects where object_name like '%TABLE%' and schema_name = 'PUBLIC'

Data

Note Many system views are available in two versions:

• one that shows the data gathered since a particular service was last started,
• and one that shows the data gathered since the time the view was last reset.

For example, the view M_VOLUME_IO_TOTAL_STATISTICS shows the total read size and the total write size for each volume since a service was last started.

Example: The below RESET SQL statement initializes the statistics shown by this view.

ALTER SYSTEM RESET MONITORING VIEW SYS.M_VOLUME_IO_TOTAL_STATISTICS

The view M_VOLUME_IO_STATISTICS_RESET now shows the statistics since the reset time.

Documentation / Reference

• Monitoring Using System and Statistics Views
• System view reference - SAP HANA SQL and System Views Reference