Hi Vusal,
The Out-of_memory from accumulator_rollup process is most likely happening by run out of JVM memory which is all used by process. So in this case, you may need to tune on your JVM size.
JVM tune is most likely trial and error process. and try to increase 1.5 times first, then check it.
You are able to check your current JVM size for accumulator_rollup process by below output.
# cat /opt/qradar/systemd/mem/accumulator_rollup
then you can check any custom tune on below output. This file is the place where you can tune JVM size.
# cat /opt/qradar/systemd/mem/accumulator_rollup.override
For heap customization, uncomment the line below in a accumulator_rollup.override file for the process. (The memory size need to update.)
#export MEM_OPTS="-Xmx768m -Xms768m"
Regards, Brian
#QRadar#Support#SupportMigration