Caches

In the Performance display of the Database Alert Monitor and liveCache Alert Monitor, you can find, among other things, information about the cache hit rates.

Procedure

Open the Database Alert Monitor or liveCache Alert Monitor. Choose Performance Caches .

Result

Display	Default for Alerts
Data Cache Hit Rate - total	Yellow alert: If the hit rate falls below `99 %`. Red alert: If the hit rate falls below `98 %`.
Catalog Cache Hit Rate	Yellow alert: If the hit rate falls below `80 %`. Red alert: If the hit rate falls below `60 %`.
liveCache: Data Cache Hit Rate - OMS Data	Yellow alert: If the hit rate falls below `99.8%`. Red alert: If the hit rate falls below `99.5%`.
liveCache: Data Cache Hit Rate — SQL Data	Yellow alert: If the hit rate falls below `99 %`. Red alert: If the hit rate falls below `98 %`.
liveCache: Data Cache Hit Rate — History/Undo	Yellow alert: If the hit rate falls below `99.8%`. Red alert: If the hit rate falls below `99.5%`.

Display

Default for Alerts

Data Cache Hit Rate - total

Yellow alert: If the hit rate falls below 99 %.

Red alert: If the hit rate falls below 98 %.

Catalog Cache Hit Rate

Yellow alert: If the hit rate falls below 80 %.

Red alert: If the hit rate falls below 60 %.

liveCache:

Data Cache Hit Rate - OMS Data

Yellow alert: If the hit rate falls below 99.8%.

Red alert: If the hit rate falls below 99.5%.

liveCache:

Data Cache Hit Rate — SQL Data

Yellow alert: If the hit rate falls below 99 %.

Red alert: If the hit rate falls below 98 %.

liveCache:

Data Cache Hit Rate — History/Undo

Yellow alert: If the hit rate falls below 99.8%.

Red alert: If the hit rate falls below 99.5%.

More Information

DBA Cockpit, Caches

Database/liveCache Assistant, Caches

SAP liveCache Technology: Monitoring the Main Memory Areas