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13a1901bad
When executing a CALL or DO in a non-atomic context (i.e., not inside a function or query), plpgsql creates a new plan each time through, as a rather hacky solution to some resource management issues. But it failed to free this plan until exit of the current procedure or DO block, resulting in serious memory bloat in procedures that called other procedures many times. Fix by remembering to free the plan, and by being more honest about restoring the previous state (otherwise, recursive procedure calls have a problem). There was also a smaller leak associated with recalculation of the "target" list of output variables. Fix that by using the statement- lifespan context to hold non-permanent values. Back-patch to v11 where procedures were introduced. Pavel Stehule and Tom Lane Discussion: https://postgr.es/m/CAFj8pRDiiU1dqym+_P4_GuTWm76knJu7z9opWayBJTC0nQGUUA@mail.gmail.com |
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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/.