Interested to Buy Any Domain ? << Click Here >> for more details...
Explain SAP Buffers, Types, and Parameters?
- 2 Answers
- 52019 Views
- IBM, TCS, I also Faced
- E-Mail Answers
Answer Posted / upendr
Re: Explain SAP Buffers, Types, and Parameters?
Answer
# 1 Nametab (NTAB) Buffer contains data derived from tables
DDNTT(table definitions) and DDNTF (field descriptions),
stored in four individual buffer areas. These four buffers
are also known as the Repository buffer or the ABAP
Dictionary buffer. TTAB, FTAB, IRBD, SNTAB
NTAB: rsdb/ntab/entrycount
FTAB: rsdb/ntab/ftabsize
SNTAB: rsdb/ntab/sntabsize
IRBD: rsdb/ntab/irbdsize
The NTAB buffer: If the quality of these buffers falls below
95% , you should try to identify reasons for this decrease
in hit ratio.
Program Buffer (PXA) abap/buffer_size
The program buffer is used for storing ABAP program loads
before they are executed within individual work processes.
It is also known as the ABAP buffer. The PXA should show hit
ratios of 95% or more otherwise you will see, for example a
high load and generation time on your SAP instance.
Generic Table Buffer
The quality of the generic key buffer should be greater than
95% and can be upto 99%. This buffer is also known as the
generic key table buffer or the generic buffer.
CUA Buffer rsdb/cua/buffersize
The CUA buffer stores objects used by SAP GUI, including
menus and button definitions. The CUA buffer is also known
as the Menu buffer. Usually this buffer plays no significant
role concerning the performance of your SAP instance.
Roll and Paging Buffers rdisp/ROLL_SHM and rdisp/PG_SHM
The parameters rdisp/ROLL_SHM and rdisp/PG_SHM are used to
allocate the roll and paging buffer in 8KB blocks.
Screen Buffer zcsa/presentation_buffer_area
The screen buffer or Dynpro buffer stores generated screens,
the so-called Dynpro load. Usually this buffer plays no
significant role concerning the performance of your SAP
instance.
Calendar Buffer zcsa/calendar_area
The SAP calendar buffer stores all defined factory and
public holiday calendars.
OTR Buffer
The Online Text Repository (OTR) buffer contains texts used
by Business Server Pages, Exception Builder and HTTP
Services. Usually this buffer plays no significant role
concerning the performance of your SAP instance.
Export/Import Buffer
The Export/Import buffer is used to store data that must be
available to several work process. The system fills or reads
the buffers using the ABAP command. EXPORT TO / IMPORT FROM
SHARED BUFFER. Usually this buffer is only of interest for
individual processes, such as in some SAP APO functions.
Exp./Imp.SHM
The Export/Import-Shared-Memory-(ESM)-buffer contains data
put there by the using the ABAP statement EXPORT TO SHARED
MEMORY. This buffer might become a performance bottleneck
when you see heavy swapping activity for this buffer. If you
see no swaps, the buffer is perfect.
| Is This Answer Correct ? | 21 Yes | 3 No |
Post New Answer View All Answers
dear friends, HOW TO CONFIGURE INTO ABAP WEB DYNPRO AND ADOBE OF ECC6.0 R/3 IDES SYSTEM?
Does any one have SAP basis B1 Resume format for 4 to 5 year experience? if any one have please send me on kishorekharche@gmail.com
Hi i have 2.10 yrs of experience on Sap Basis...been working as a sap basis consultant.but unable to get through MNC companies...On what criteria does HR select the candidate.does my academics matter coz they are not good thou i am a B.tech graduate
1)Have you used performance tuning? What major steps will you use for these? 2)In production what is the user exit? 3)What type of user exits have you written? 4)Difference between Search Helps and Match Codes 5)On which even we can validate the input fields in module progams? 6)what are the table controls in BDC ? 7)what is the difference between bdc and lsmw ? 8) If the scripts are client dependent, what above driver program ? (client dependent / independent) 9). I have two pages, In one page I want address, Header, Main & footer. In the second page I want only Main. How to do it? 10) Will 50,000 records be uploaded directly into APP's Server? 11) What is the button to change the variant in ALV ? 12) If your project is support project ? when is your implementation has completed ? 13)In start of selection, if we perform validation, what happens ? 12)How to join 3 tallies & looping. We have developed a program in a client say (200- client) and 210 has test data. No developing rights. How to test data? 13)How to transfer data which is coming from are report as output to another report 14)How to create standard text and how do u transfer it ? 15)What are the views when we are creating Material ?
A transport is imported into QAS in 2 min. time the same transport when imported into PRD is taking more than 20 min. why? What to do?
A user moved the transport request from dev to qua. How would you trace him?
How to see when were the optimizer stats last time run?
Where will u find transport error logs?
Explain the system log?
How many types of work processes are there in sap ?
How would you troubleshoot the 'system seems slow'?
What is development class? Why to create the development class?
What is the procedure to applying patches?
How many times bdls transaction executes for 2 clients
Can any one tell me some real time errors you got for support pack apply, During transport request export-import and for db dackup.
