memory DUMPS

The memory for the user context is used up?:
STORAGE_PARAMETERS_WRONG_SET
SYSTEM_ROLL_IN_ERROR
TSV_TNEW_BLOCKS_NO_ROLL_MEMORY
TSV_TNEW_PAGE_ALLOC_FAILED
TSV_TNEW_NO_ROLL_MEMORY

The allocated areas in the shared memory (EM and PXA) violate the OS specific restrictions
PXA_NO_SHARED_MEMORY

Memory boottleneck durring an operation in the database interface
DBIF_RTAB_NO_MEMORY
DBIF_RSQL_NO_MEMORY

SAP paging memory is used up
SYSTEM_NO_MORE_PAGING
TSB_TNEW_PAGE_ALLOC_FAILED

If ztta/max_memreq_MB is set too low
SYSTEM_NO_ROLL

Performance indicator for ABAP (ST03)

Below you do find the thresholds for each item from ST03

- Wait time < 10% of the rsponse time
- Average roll-in time < 20ms
- Average roll-wait time < 200ms
- Average load (and generation) time < 10% of response time (<50ms)
- Average database request time < 40% of (respose time - wait time)
- Average CPU time < 40% of (resposne time - wait time)
- Average CPU time not much less than processing time
- Average response time depends of requirements. There is no general rule

sapcpe

The sapcpe is a tool responsible to copy the kernel folder from

/usr/sap//SYS/exe/run

to

/usr/sap///exe

Important profile paramters for the sapcpe

DIR_CT_RUN = $(DIR_EXE_ROOT)/run

DIR_EXECUTABLE = $(DIR_INSTANCE)/exe