SAP PO – The predefined size of the shared memory monitoring slots for the thread system is reached

10 December 2023
admin
PO
#Basis, #PO

Last time I found in Default Trace log file information like: “The predefined size of the shared memory monitoring slots for the thread system is reached: size[600], used[600], type[thread table]. Every thread started from now on will be fully functional but will not be visible in the MMC thread monitoring. You need to reconfigure the shared memory monitoring slots for threads“

Solution

To resolve this warning issue, You should increase the number of “Thread” slots and Cache parameter. SAP recommends a value between 5000-10000 for Thread and 400 for Cache.

These parameters You can change via Config Tool.

## In Linux environment run:
/usr/sap/<SID>/<instance>/j2ee/configtool/configtool.sh

Then go to menu "View" -> enable "Expert Mode"

At the end save the configuration and restart SAP instance to initiate these changes.