Meaning of 'maximum address space' in ST22?

[Former Member]

Hello experts!

Can someone tell me what the meaning of the maximum adress space is? I see this value in ST22 after some dumps because of a lack of main memory and I want to understand the meaning of this parameter to make a better interpretation of the dump.

Best regards,

Peter

[Former Member]

Hello Peter,

Maximum Address Space (Virtual space.) is related to the Operating system. Roughly we can define it as the maximum space OS allocates to a process. In 32 bit environment (eg: Windows) for a particular partition the maximum 4 Gb is what you can allocate...(Regardless of the RAM size)......Eg: if you have 2 partitions C:/ and D:/ your space could be 4096 x 2.

This is how I can roughly explain your query.

*Reward points if helpful

Regards,

prashant

[Former Member]

Hello prashant!

We have a HP-UX 64 Bit-System. So I think there is no 4GB maximum. How can I have 6 GB (Heap+EM) for one process for one user if I just can allocate 4 GB? Where is my gap here?

Regards,

Peter

[Former Member]

Increase the swap space. That might solve your problem.

regards

tamilboy

[Former Member]

Hi,

Please paste the full error.

I think it has some limitation set up to this parameter where address space such as words can not be exceeded .. etc...

Thanks,

[Former Member]

Our Dumps looks like this:

.................................

The amount of storage space (in bytes) filled at termination time was:

Roll area...................... 6267008

Extended memory (EM)........... 2003033680

Assigned memory (HEAP)......... 4001376064

Short area..................... " "

Paging area.................... 16384

Maximum address space.......... 4294967295

If the error occures in a non-modified SAP program, you may be able to

find an interim solution in an SAP Note.

If you have access to SAP Notes, carry out a search with the following

keywords:

"TSV_TNEW_OCCURS_NO_ROLL_MEMORY" " "

.................................

What you see is that EM and HEAP is on the Limit. What I want to know, what is the meaning of "Maximum address space" in this Kontext. Why can I have a adress space of little more than 4 GB if I can allocate 2 GB EM and 4 GB HEAP ?

Best Regards,

Peter