Heap Usage

In the Memory Areas user menu, you can find, among other things, a display of the OMS heap usage since the last start of the liveCache Monitoring.

The user has been assigned a role in accordance with the authorization concept.

The SAP liveCache database is in the ONLINE operational state.

In the user menu, choose liveCache Assistant (transaction LC10).
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.
Choose liveCache Monitoring .
Choose Current Status Memory Areas Heap Usage .

Open the DBA Cockpit (transaction code DBACOCKPIT) and choose Space Heap Usage .

The OMS heap configuration parameters are displayed, such as: OmsMaxHeapSize, OmsHeapThreshold, OmsSubHeaps.

The current values of the following memory areas are displayed: Data Cache, Converter, maximum heap usage, and system heap

The system displays information on OMS heap usage.

Heap area	Name of the OMS heap
Size	Size of the memory controlled by the OMS heap
Currently occupied	Size of the memory actually occupied by the OMS heap
Memory requests	Number of memory requests in the OMS heap
Memory releases	Number of memory releases in the OMS heap
Requests through block allocator	Number of OMS heap memory requests through the corresponding block allocator
Releases through block allocator	Number of OMS heap memory releases through the corresponding block allocator
Spinlocks	Number of synchronizations through spinlocks
Conflicts	Number of collisions that occurred during synchronizations through spinlocks
Spinloops, Yieldloops, MAX Spinloops, MAX Yieldloops	An interpretation of these details requires knowledge of spinlock implementation.

liveCache Alert Monitor, Memory

Glossary, OMS Heap