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OMS History Cache Hit RateLocate this document in the navigation structure


OMS history cache hitrate <percentage>%, <number> of <number of> accesses failed


This message can occur for SAP liveCache databases only.

The hit rate when accessing history data (links to undo log entries for the objects) in the data cache is too low. In a running SAP liveCache application, the hit rate should not fall below 100%, otherwise the data must be read physically.

The hit rate may fall for short periods of time, for example, when objects are accessed for the first time.

User Response

Check the following points:

  • The data cache load

  • The size of the plan version

  • Long-running OMS versions

  • Configuration of the SAP liveCache database and the hardware

More Information

Concepts of the Database System, How Databases Log Data Changes