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FUNCTIONS / SYSTEM INFORMATION FUNCTIONS AND OPERATORS

pg_get_multixact_stats

Read PG 20 devel manual ↗

Returns statistics about current multixact usage: num_mxids is the total number of multixact IDs currently present in the system, num_members is the total number of multixact member entries currently present in the system, members_size is the storage occupied by num_members in the pg_multixact/members directory, oldest_multixact is the oldest multixact ID still in use.

Development snapshot. These definitions may change before release.

Signatures & examples

pg_get_multixact_stats () → record ( num_mxids integer, num_members bigint, members_size bigint, oldest_multixact xid )
Returns statistics about current multixact usage: num_mxids is the total number of multixact IDs currently present in the system, num_members is the total number of multixact member entries currently present in the system, members_size is the storage occupied by num_members in the pg_multixact/members directory, oldest_multixact is the oldest multixact ID still in use.
Version history 1
  1. PG 18 → 19added

Definition snapshot: 2026-09-14T13:14:25.684213+00:00@99e6866c · English manual source