SAP Note 97497 - Memory Management Parameter (3.0/3.1)

Component : Backoffice Service Delivery -

Solution : https://service.sap.com/sap/support/notes/97497 (SAP Service marketplace login required)

Summary :
This SAP Note outlines the crucial settings for R/3 Memory Management, essential for optimal system performance and error prevention in SAP R/3 environments. It combines previous notes based on recommendations from the Basis development group and customer experiences, provided by SAP's Technical Core Competence Center (TCC). Adjustments have been added for AS/400 and HP-UX systems, with guidelines on configuring R/3 Buffer, Roll Memory, and additional buffers across various operating systems including Windows NT and UNIX derivatives, ensuring system stability and performance. Specific buffer size parameters and thresholds for different environments are detailed to avoid potential runtime errors and performance issues.

Key words :
rsdb/ntab/entrycount               13000ftab buffer  rsdb/ntab/ftabsize                  7000irbd buffer   rsdb/ntab/irbdsize                  4000, < 16773120  zcsa/db_max_buftab               10000single record table buffer  rtbb/buffer_length              15000 - 30000                                  as400, early versus late swapspace allocation78498 high paging rate, select transaction st02 -> detail analysis menu -> storageon, generic key table buffer   zcsa/table_buffer_ area      20000000 - 60000000, diaaix              approximately 220 mb          180 mbsni               384 mb                        350 mbhp                maxdsize, sntab buffer  rsdb/ntab/sntabsize                2500, < 16773120  sap/bufdir_entries                  10000calendar buffer  zcsa/calendar_area             500000, sql servervirtual memory required  = total memory size, cua buffer  rsdb/cua/buffersize                5000

Related Notes :

575667FAQ: Runtime error in delivery processing
565428VL10: TSV_TNEW_PAGE_ALLOC_FAILED
350167Process killed by Signal 11 or Signal 10
147568PXA_NO_FREE_SPACE
146528Configuration of R/3 on hosts with much RAM
130140ORA-4030 on NT, out of process memory
103747Performance: Parameter recommendations as of Release 4.0
97179Digital Unix, swap allocation with huge systems
78498High paging rate on AIX servers, in particular DB servers
68544Nt: R/3 Memory Management for Release 3.1X
47502CC-REMOTE: Messages of the Remote Clientcopy
41360Database configuration using onconfig parameter
38307Reducing shared memory consumption
30606Entries in /etc/sysconfigtab under Digital UNIX
27269Error message: TSV_TNEW_INDEX_NO_ROLL_MEMORY
20527Runtime error TSV_TNEW_PAGE_ALLOC_FAILED