Supported Versions: Current (16) / 15 / 14
Development Versions: 17 / devel

54.4. pg_backend_memory_contexts

The view pg_backend_memory_contexts displays all the memory contexts of the server process attached to the current session.

pg_backend_memory_contexts contains one row for each memory context.

Table 54.4. pg_backend_memory_contexts Columns

Column Type


name text

Name of the memory context

ident text

Identification information of the memory context. This field is truncated at 1024 bytes

parent text

Name of the parent of this memory context

level int4

Distance from TopMemoryContext in context tree

total_bytes int8

Total bytes allocated for this memory context

total_nblocks int8

Total number of blocks allocated for this memory context

free_bytes int8

Free space in bytes

free_chunks int8

Total number of free chunks

used_bytes int8

Used space in bytes

By default, the pg_backend_memory_contexts view can be read only by superusers or roles with the privileges of the pg_read_all_stats role.

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