Resetting the SAP buffers without restarting of SAP application server.

This article covers, how to reset the SAP buffers without restarting SAP instance.

            1) Buffers store the rarely modified and frequently accessed data.

            

            2) If an SAP system comprises two instance than both the instance will have there separate buffer.

            

           3) To synchronize both the buffers, set the parameters rdisp/buffrefmode=true and                                              rdisp/buffreftime=60 secs.(as per your convenient) 

           

          4) SAP buffers are monitored in st02.

         

         5) If the buffers are fulled it would result in too many swaps.

 Snote:-  However if you want to reset the buffers be very careful since it would result in performance                        degradation. Because all the transactions would directly hit the database tables. You are advised to                reset the buffers if and only if you have good reason to do so.

                                       Resetting the Buffers

1) /$SYNC- It resets the application buffers.

2)/$CUA- It resets the central user administration buffer.

3)/$TAB- It resets the table buffers of application server.

4)/$NAM- It resets the nametab buffers of the application server.

5)/$DYNP- It resets the screen buffers of the application server.

6/$ESM- It resets the Exp./Imp. shared memory buffers of the application server.

7)/$PXA- It resets the Program Execution Area of the application server.

Execute all the above command in command window.