Caches
The Memory Areas user menu contains, among other things, a display of the most important cache indicators since liveCache monitoring was last started.
Prerequisites
The user has been assigned a role in accordance with the authorization concept. You are in the user menu of the user with the authorizations that correspond to this role.
The liveCache database instance is in the ONLINE operational state.
Procedure
...
1. In the user menu, choose liveCache Assistant(transaction LC10).
2.
Enter the name of the database
connection.
You can select the name from the list of existing names. You can restrict the
search for the required name.
3. Choose liveCache → Monitoring.
4. Choose Current Status →Memory Areas ® Caches.
Result
Cache Sizes |
Size of the
|
Cache Accesses |
Statistical information about accesses to the data cache, particularly accesses to the OMS data, SQL data and links at undo log entries for the object. |
Data Cache Usage |
A breakdown of the usage of the data cache by OMS, SQL and links at undo log entries. Displays the changed pages since the last restart of the liveCache database instance |
Cache-Specific Parameter Settings |
The most important
parameter here is the cache size:
|
The data cache must be dimensioned so that it can hold all OMS data, links to undo log entries and SQL data in the data cache. Otherwise, the data is written to the data area, which negatively affects the liveCache performance.
The memory of the data cache should take up about 40% of the main memory available to the liveCache database instance. You may need to adjust its size to the requirements of the application.
See also:
liveCache Alert Monitor, Memory,Caches
Monitoring the Main Memory Areas
Concepts of the Database System,
History
Management