Checking Roll /Paging Area and Ext. Memory with Trans. ST02

Use

On the initial screen of transaction ST02 (Tune Summary) you can see the following overview of the SAP Memory underneath the Buffer overview.

SAP memory

Current use

Max. use

In memory

On disk

[%]

[kB]

[kB]

[kB]

[kB]

Roll area         

  5,47

    448 

  1.280

   8.192 

      0

Paging area       

  0,01

     16 

     72

   9.600 

252.544

Extended Memory   

  4,03

  6.144 

 22.528

 152.576 

0

Heap Memory       

0

      0 

      0

0

0

This is a snapshot of the current (percentage and absolute values in kilobytes) and the maximum memory usage of the various SAP Memory Types. The table also indicates whether, and to what extent, the requirement is satisfied from the main memory and from the disk.

Procedure

You can determine from the Extended Memory row that the SAP Extended Memory is sufficiently large. The value [Max. use] is, in this example, noticeably smaller than the created memory area [In memory]. If both values are identical, you must increase the extended memory (profile parameter:  em/initial_size_MB).

See also:

SAP Roll Area

SAP paging

SAP Extended Memory

Private Memory (Heap Memory)