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3206284 - HANA DB failed to start after changing global_allocation_limit

Symptom

HANA database failed to start after changing  global_allocation_limit to a smaller value, nameserver run out of memory during start up.

daemon trace:
====================
[397250]{-1}[-1/-1] <timestamp>  i Daemon           RunningInstance.cpp(00260) : Start 'hdbnameserver' as process <pid>, process group <pid>, instance 0 of <HDB Nameserver>
............
............
[397250]{-1}[-1/-1] <timestamp>  i Daemon           DaemonHandle.cpp(00335) : Process 'hdbnameserver', pid <pid> exited normally with status 5
[397250]{-1}[-1/-1] <timestamp>  i Daemon           DaemonHandle.cpp(00367) : Program 'hdbnameserver' failed during startup. Service is essential, shutting down all instances
=====================

nameserver.rtedump.<timestamp>.oom.trc:
=====================
[MEMORY_OOM]  Information about current out of memory situation:
OUT OF MEMORY occurred.
Host: <hostname>
Executable: hdbnameserver
PID: <pid>
Failed to allocate 1.26gb (1362911232b).

Allocation failure type: GLOBAL_ALLOCATION_LIMIT
=====================

However, even after reverting /usr/sap/<sid>/HDB<instance number>/<host name>/global.ini >global_allocation_limit to 0, HANA still can not start up, failed with same error.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.


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Environment

  • SAP HANA Platform Edition 1.0
  • SAP HANA Platform Edition 2.0

Product

SAP NetWeaver 7.5

Keywords

global_allocation_limit, nameserver, OOM, out of memory, start up, HDB Daemon not running , KBA , HAN-DB-ENG , SAP HANA DB Engines , Problem

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