[Description]
could not map anonymous shared memory and the reason for failure will be printed along with error.If errno is ENOMEM means This error usually means that PostgreSQL's request for a shared memory segment exceeded available memory, swap space, or huge pages. To reduce the request size (currently size bytes), reduce PostgreSQL's shared memory usage, perhaps by reducing shared_buffers or max_connections.
[System Processing]
Processing will be aborted.
[Action]
To investigate the cause of the occurrence from the message, and remove cause.