SAP memory

[Former Member]

Hi,

We have just installed SAP NETWEAVER 2004S (ECC6).

We notice under Linux with the command "free" that the free memory is 3 Go while the available memory is 16 Go. We want to understand who can use 12 Go knowing that users have no access to the system yet.

Uder SAP with transaction ST06, the memory values displayed are :

physical memory available in kb=16412984

physical memory free in kb=531936

Pages in/s=0 Kb

paged in/s=0 Kb

Pages out/s=0 Kb

paged out/s=0

Can somebody explain to us this weak value of the free memory knowing that no special treatment runs in the system.

Thank you

[Former Member]

Hi Andreas,

2 instances (ABAP and JAVA) were installed. Can You explain to me how the physical memory is shared between the 2 instances and how to check it, thank you.

Adel

[former_member197208]

Adel,

sorry, I don't really know. Maybe guys over in the [NetWeaver AS, General|/community [original link is broken]; forum can help you. There are better placed and there is more traffic going on.

Andreas.

[former_member197208]

Hi,

this forum is about Java memory analysis. I am not quite sure, are you talking about the Java Virtual Machine? As Java has its own memory management, it usually allocates a (big?) chunk of memory and grows continuously inside that chunk. For example, specifying -Xmx4G will allocation 4G even if the VM doesn't need that much right away.

If you are talking about a ABAP stack (or a dual stack) then maybe the ABAP forums might be of more help. Sorry for that.

Andreas.