{"id":31172,"date":"2024-02-22T09:21:28","date_gmt":"2024-02-22T08:21:28","guid":{"rendered":"https:\/\/www.dbi-services.com\/blog\/?p=31172"},"modified":"2024-02-22T09:51:53","modified_gmt":"2024-02-22T08:51:53","slug":"postgresql-17-transaction_timeout","status":"publish","type":"post","link":"https:\/\/www.dbi-services.com\/blog\/postgresql-17-transaction_timeout\/","title":{"rendered":"PostgreSQL 17: transaction_timeout"},"content":{"rendered":"\n<p>PostgreSQL already comes with various time out parameters when it comes to sessions and statements. There is <a href=\"https:\/\/www.postgresql.org\/docs\/current\/runtime-config-client.html#GUC-IDLE-IN-TRANSACTION-SESSION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">idle_in_transaction_session_timeout<\/a>, <a href=\"https:\/\/www.postgresql.org\/docs\/current\/runtime-config-client.html#GUC-IDLE-SESSION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">idle_session_timeout<\/a>, and there is <a href=\"https:\/\/www.postgresql.org\/docs\/current\/runtime-config-client.html#GUC-STATEMENT-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">statement_timeout<\/a>. All of them are disabled by default but can be turned on to prevent either long running sessions or statements. Starting with PostgreSQL 17 there will be another time out related parameter: <a href=\"https:\/\/www.postgresql.org\/docs\/devel\/runtime-config-client.html#GUC-TRANSACTION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">transaction_timeout<\/a>. As the name implies, this one applies on the transaction level.<\/p>\n\n\n\n<p>An easy test to see how this works is this:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; highlight: [1,3,5]; title: ; notranslate\" title=\"\">\npostgres=# set transaction_timeout = &#039;5s&#039;;\nSET\npostgres=# begin;\nBEGIN\npostgres=*# select pg_sleep(6);\nFATAL:  terminating connection due to transaction timeout\nserver closed the connection unexpectedly\n        This probably means the server terminated abnormally\n        before or while processing the request.\nThe connection to the server was lost. Attempting reset: Succeeded.\npostgres=# \n<\/pre><\/div>\n\n\n<p>If <a href=\"https:\/\/www.postgresql.org\/docs\/current\/runtime-config-client.html#GUC-IDLE-IN-TRANSACTION-SESSION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">idle_in_transaction_session_timeout<\/a> and <a href=\"https:\/\/www.postgresql.org\/docs\/current\/runtime-config-client.html#GUC-STATEMENT-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">statement_timeout<\/a> are set as well but <a href=\"https:\/\/www.postgresql.org\/docs\/devel\/runtime-config-client.html#GUC-TRANSACTION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">transaction_timeout<\/a> is set to a shorter time, then <a href=\"https:\/\/www.postgresql.org\/docs\/devel\/runtime-config-client.html#GUC-TRANSACTION-TIMEOUT\" target=\"_blank\" rel=\"noreferrer noopener\">transaction_timeout<\/a> will be the one which counts:<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; highlight: [1,3,5,7,9]; title: ; notranslate\" title=\"\">\npostgres=# set idle_in_transaction_session_timeout = &#039;10s&#039;;\nSET\npostgres=# set statement_timeout = &#039;10s&#039;;\nSET\npostgres=# set transaction_timeout = &#039;5s&#039;;\nSET\npostgres=# begin;\nBEGIN\npostgres=*# select pg_sleep(6);\nFATAL:  terminating connection due to transaction timeout\nserver closed the connection unexpectedly\n        This probably means the server terminated abnormally\n        before or while processing the request.\nThe connection to the server was lost. Attempting reset: Succeeded.\npostgres=# \n<\/pre><\/div>\n\n\n<p>Be aware that setting this on the instance level (postgresql.conf or postgresql.auto.conf) will make this active for all transactions and this is probably not what you want. Use it with care where you really need.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL already comes with various time out parameters when it comes to sessions and statements. There is idle_in_transaction_session_timeout, idle_session_timeout, and there is statement_timeout. All of them are disabled by default but can be turned on to prevent either long running sessions or statements. Starting with PostgreSQL 17 there will be another time out related parameter: [&hellip;]<\/p>\n","protected":false},"author":29,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[229,198],"tags":[77],"type_dbi":[2749],"class_list":["post-31172","post","type-post","status-publish","format-standard","hentry","category-database-administration-monitoring","category-database-management","tag-postgresql","type-postgresql"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.2 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>PostgreSQL 17: transaction_timeout - dbi Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dbi-services.com\/blog\/postgresql-17-transaction_timeout\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PostgreSQL 17: transaction_timeout\" \/>\n<meta property=\"og:description\" content=\"PostgreSQL already comes with various time out parameters when it comes to sessions and statements. 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He has more than 15 years of experience in management, engineering and optimization of databases and infrastructures, especially on Oracle and PostgreSQL. Since the beginning of his career, he has specialized in Oracle Technologies and is Oracle Certified Professional 12c and Oracle Certified Expert RAC\/GridInfra. Over time, Daniel has become increasingly interested in open source technologies, becoming \u201cTechnology Leader Open Infrastructure\u201d and PostgreSQL expert. \u00a0Based on community or EnterpriseDB tools, he develops and installs complex high available solutions with PostgreSQL. He is also a certified PostgreSQL Plus 9.0 Professional and a Postgres Advanced Server 9.4 Professional. He is a regular speaker at PostgreSQL conferences in Switzerland and Europe. Today Daniel is also supporting our customers on AWS services such as AWS RDS, database migrations into the cloud, EC2 and automated infrastructure management with AWS SSM (System Manager). 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