Hello Raoul,
liveCache version 7.9 loads the OMS data impictely after restart into the data cache . So you'll see in the DB-Analyzer expert analysis -> Data Cache Usage file that the Data cache is immediately filled up. The column DC_usage tells you the percentage value of the datacache filling level. If all data is filled into the DC and the Usage in percent is lower than 100% - all OMS data can be loaded into the Cache and you have additional free space for SQL data.
The reload mechanism stops when:
1. all OMS data is loaded into the cache
2. the Filling level of 100% is reached
To find out the correct size of the Data Cache you should use the Db-Analyzer data. here the DB-Analyzer tells you if in normal processing the DC hitrate gets lower than 99%. Then a performacne analysis should be started.
There are no commen recommendations for the size of the Datacache. It depends on the SCM applications and the amount of data which has to be processed in the liveCache.
Regards, Christiane