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The OS is killing the nsrmmdbd process. This results in impacts to the NetWorker server, such as failed backups. The NetWorker server daemon.raw reports the following: Linux: /nsr/logs/daemon.rawWindows (Default): C:\Program Files\EMC NetWorker\nsr\logs\daemon.rawNetWorker: How to use nsr_render_log to render .raw log files 71193 12/13/25 15:46:34 0 0 0 841355584 29252 0 myserver nsrd NSR info NetWorker Daemons Warning: nsrmmdbd received signal 9 (SIGKILL) On Linux servers, the /var/log/messages file reports "Out of Memory" messages. This results in oom-kill to stop nsrmmbdb Dec 13 15:46:33 myserver kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=nsrmmdbd,pid=2079,uid=0 Dec 13 15:46:33 myserver kernel: Out of memory: Killed process 2079 (nsrmmdbd) total-vm:25889764kB, anon-rss:24201136kB, file-rss:0kB, shmem-rss:0kB Dec 13 15:46:34 myserver kernel: oom_reaper: reaped process 2079 (nsrmmdbd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB On Windows servers, the System and Application Event logs may report similar error messaging. NOTE: The exact error messaging can differ depending on OS platform and versioning. The common observation is that "out of memory" errors are observed, and the system is stopping nsrmmdbd due to this reason.
The nsrmmdbd process reports a high memory usage that increases over the time. When the system is running low on memory, OOM kills the process.
The NetWorker Performance Optimization Planning Guide details requirements for nsrmmdbd sizes of 1GB and more. See chapter: Optimizing nsrmmdbd memory usage. NetWorker documentation is available through: Support for NetWorker | Manuals & Documents Also, ensure that the server has adequate compute resources for the environment size. See chapter: Memory requirements for the NetWorker server and NetWorker Management Console The MMDB_SQLITE parameter and other system kernel parameter best practices are documented in the following article: NetWorker: Best practices for networking configuration
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