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When restoring slot information from disk at startup and filling in shared memory information, the startup process would issue a PANIC message if more slots are found than what max_replication_slots allows, and then Postgres generates a core dump, recommending to increase max_replication_slots. This gives users a switch to crash Postgres at will by creating slots, lower the configuration to not support it, and then restart it. Making Postgres crash hard in this case is overdoing it just to give a recommendation to users. So instead use a FATAL, which makes Postgres fail to start without crashing, still giving the recommendation. This is more consistent with what happens for prepared transactions for example. Author: Michael Paquier Reviewed-by: Andres Freund Discussion: https://postgr.es/m/20181030025109.GD1644@paquier.xyz |
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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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.