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When all shared buffers examined are pinned, a query can fail with "no unpinned buffers available". This can happen when shared_buffers is too small for the workload, but the error was reported as an internal error, making a resource shortage look like a server bug. Replace elog() with ereport() to report this condition with SQLSTATE 53000 (insufficient_resources) instead of XX000 (internal_error), matching the corresponding local-buffer error. Reword both messages to clarify whether shared or local buffers are involved. Author: Ma Xueting <ma@sraoss.co.jp> Reviewed-by: Pierre Forstmann <pierre.forstmann@gmail.com> Reviewed-by: Matthias van de Meent <boekewurm+postgres@gmail.com> Reviewed-by: solai v <solai.cdac@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Discussion: https://postgr.es/m/TYWP286MB2571C92032EE9D1B8F2BFACFEF812@TYWP286MB2571.JPNP286.PROD.OUTLOOK.COM
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.