APO Live cache

Question

Hi guru's,
         i just wanted to know what live cache means? How do  we mention live cache? If an APO person says that "data is stored in live cache " what does it mean? How do we extract data from live cache?
I will be very thankfull to you all if i get this answers.
Thanks a Lot
Regards,
Raja

Answer 1

Hello Raja,
For SAP liveCache documentation in English:
http://help.sap.com/saphelp_nw04/helpdata/en/f2/0271f49770f0498d32844fc0283645/frameset.htm  
( please see the liveCache terms 'Data Cache' & 'OMS Data' ) 
As you know objects in liveCache stored in the class containers can be                          
accessed and manipulated only via LCA ( liveCache Applications ) routines
( Database Procedures ) which are methods of LCA ( COM ) objects.
The registration of the LCA routines is done automatically when the liveCache
is started by the LC10, check the lcinit.log file.                                 
The shared ( dynamic linked )procedures in the LiveCache are written in C++                          
and shipped to the customers as binary shared libraries ( dynamic linked )                            
(COM-Routines or LCA-Routines) together with the LiveCache. The original                           
C++ source code of the libraries is not generally available to the customers.                                                                               
You can get the complete list of the stored procedures using SQL Studio
(shipped with the LiveCache):                                     
just connect to the LiveCache as Standard livecache user ( SAPR3 or SAP<LC-SID>
By default ) with the password 'SAP'( default ).                                                                
You can read the Config-Files ./sapdb/<LC name>/db/sap/xxx.lst                 
or check the information in the lcinit.log file.                                                                               
Names of all registered procedures, which have been called from ABAP, you can find
executing 'lc10' transaction on your SAPAPO system:                                             
LiveCache Monitoring ->Problem Analysis -> Database Procedures .                                        
If you need to see the interfaces of the procedures, you may use 'se80'
transaction and navigate in the Development class '/SAPAPO/OM'.                                                                  
The transaction /n/SAPAPO/OM16 is provided by SAP to get                                             
information about data stored in the LiveCache. If you                             
would like to get your own views, you should write a special report                
in ABAP using "/SAPAPO/OM"-development class functionality.                        
'/SAPAPO/OM16' itself calls a bunch of OM- functions to read                       
data from the LiveCache, e.g.:                                                     
/SAPAPO/OM_RESOURCE_GET_ALL                                                        
/SAPAPO/OM_ORDER_GET_ALL                                                           
/SAPAPO/OM_SETUPMATRIX_GET_DAT                                                     
/SAPAPO/OM_STOCK_GET_BY_UID 
You can get more information about liveCache and LCA object at the following links:                                    
Service.sap.com/scm ( -> mySAP SCM Technology )
Service.sap.com/liveCache
Thank you and best regards, Natalia Khlopina
Message was edited by: Natalia Khlopina