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In this case, the transfer uses a libpq connection, which is subject to the timeout parameters set at system level, and this can make the rewind operation suddenly canceled which is not good for automation. One workaround to such issues would be to use PGOPTIONS to enforce the wanted timeout parameters, but that's annoying, and for example pg_dump, which can run potentially long-running queries disables all types of timeouts. lock_timeout and statement_timeout are the ones which can cause problems now. Note that pg_rewind does not use transactions, so disabling idle_in_transaction_session_timeout is optional, but it feels safer to do so for the future. This is back-patched down to 9.5. idle_in_transaction_session_timeout is only present since 9.6. Author: Alexander Kukushkin Discussion: https://postgr.es/m/CAFh8B=krcVXksxiwVQh1SoY+ziJ-JC=6FcuoBL3yce_40Es5_g@mail.gmail.com Backpatch-through: 9.5
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/.