Tuning- Swap issues

Question

Hello All - Happy Spring
I was going through st02 and noticed that I am having high swaps on the CRM2007 system (Oracle 10g/Aix), particularly in the following SAP buffers:
Initial records      rsdb/ntab/irbdsize            6000
program         abap/buffersize               300000  
CUA       rsdb/cua/buffersize           3000       kB
Screen    zcsa/presentation_buffer_area 4400000    Byte
  Generic Key  zcsa/table_buffer_area        30000000    
Single record   rtbb/buffer_length            10000      kB 
Export/import  rsdb/obj/buffersize           4096 KB
PS.
when I run a check on the instance profile on the
I get a red error
E:ztta/parameter_area is smaller than default 32000 (actual is 8000)
If I increase the ztta/parameter_area would this improve the swaps issue or cause some underlying issues? 
thank you for your input and suggestions.
Edited by: thanu on Mar 27, 2008 12:58 AM

Answer 1

ztta/parameter_area: Buffer Size for SPA/GPA Parameters
Size of the shared memory buffer for SPA/GPA parameters
Extract from SAP Note 34533 - Error SET_PARAMETER_MEMORY_OVERFLOW
The memory area PARAMETER_MEMORY (or also the 'SPA/GPA area') is created once for each user when they log on and is used collectively by all sessions that arise from this logon. Each piece of information that is stored there can be read by all other sessions.
An important restriction: there is no synchronization mechanism between the sessions. This means that you cannot predict EXACTLY when a piece of information that has just been stored by a sesson can be read in another session. Therefore, this area must NOT be misused for data exchange. There are other means of doing this that are better suited to the purpose. If the error mentioned above occurs, it may be that an application is responding as described above by carrying out intensive data transfer using the SPA/GPA area.
Solution
If the error SET_PARAMETER_MEMORY_OVERFLOW occurs, the first approach to solving the problem should be to increase (for example double) the SPA/GPA area. To do this, increase the parameter 'ztta/parameter_area'. The new value of the parameter is only valid once you restart the system.
It is difficult to determine the minimum size of the SPA/GPA area. It depends on the variety of the applications to be run.
You can go ahead and set   ztta/parameter_area to its default size
Cheers
Shaji