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pg_advisory_unlock_shared

Releases a previously-acquired shared session-level advisory lock. Returns true if the lock is successfully released. If the lock was not held, false is returned, and in addition, an SQL warning will be reported by the server.

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

Reading PG 18·Select a recorded version

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Definition PG 18

Releases a previously-acquired shared session-level advisory lock. Returns true if the lock is successfully released. If the lock was not held, false is returned, and in addition, an SQL warning will be reported by the server.

Signatures and overloads

pg_advisory_unlock_shared ( key bigint ) → boolean → boolean
Releases a previously-acquired shared session-level advisory lock. Returns true if the lock is successfully released. If the lock was not held, false is returned, and in addition, an SQL warning will be reported by the server.
pg_advisory_unlock_shared ( key1 integer, key2 integer ) → boolean → boolean
Releases a previously-acquired shared session-level advisory lock. Returns true if the lock is successfully released. If the lock was not held, false is returned, and in addition, an SQL warning will be reported by the server.

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Complete source facts

documentation revision

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Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:0ee0901256db8fd78cda1795ee5ff3f1eabd03ce3fc2425e3db40976fd333a7c

Text language: en · wiki-repair-20261023:0ee0901256db8fd78cda1795ee5ff3f1eabd03ce3fc2425e3db40976fd333a7c