Re: PostgreSQL Out of Memory

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От
Mladen Gogala
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Re: PostgreSQL Out of Memory
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eab6a451-f181-c179-b423-6e63753aeddb@gmail.com
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PostgreSQL Out of Memory (liam saffioti)
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PostgreSQL Out of Memory liam saffioti <liam.saffiotti@gmail.com>
Re: PostgreSQL Out of Memory Jeff Janes <jeff.janes@gmail.com>
Re: PostgreSQL Out of Memory Mladen Gogala <gogala.mladen@gmail.com>
On 9/5/22 07:54, liam saffioti wrote:
Hi Teams,

FATAL:  terminating background worker "parallel worker" due to administrator command
FATAL:  terminating background worker "parallel worker" due to administrator command
FATAL:  terminating background worker "parallel worker" due to administrator command
FATAL:  out of memory
FATAL:  out of memory
...

You are allowing over-committing memory, which in turn activates OOMK (Out of Memory Killer) when the memory runs out. You have to restrict the number of connections or parameters like work_mem and hash_mem_multiplier. There is also a good article on Squishy Data:

https://www.crunchydata.com/blog/deep-postgresql-thoughts-the-linux-assassin

Basically, you should start with vm.overcommit_memory = 2

-- 
Mladen Gogala
Database Consultant
Tel: (347) 321-1217
https://dbwhisperer.wordpress.com
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