Postgresql slot name. To use it in a playbook, specify: community.
Postgresql slot name A logical slot will emit each change just once in normal operation. Oct 9, 2025 · Replication slots are a critical feature for ensuring reliable and efficient replication in PostgreSQL. primary_slot_name (string) 上流ノードのリソース削除を制御するためにストリーミングレプリケーション経由でプライマリに接続した場合、既存のレプリケーションスロットを使うように、必要に応じて指定します（26. To make this work, create the replication slot separately (using the function pg_create_logical_replication_slot with the plugin name pgoutput) and create the subscription using the parameter create_slot = false. This document describes how to setup the Postgres CDC connector to run SQL queries against PostgreSQL databases. Subscriptions are dumped by pg_dump if the current user is a superuser. Oct 12, 2022 · Streaming replication is a core utility of PostgreSQL introduced in version 9. +1, I was considering Whenever I restart the debezium kafka-connect container, or deploy another instance, I get the following error: io. Nov 19, 2022 · I am using PostgreSQL 11. Jun 8, 2018 · Since you failed to drop the replication slot, it comes as no surprise that creating a new subscription with the same name (and hence replication slot) fails. This can be achieved by configuring synchronized_standby_slots. pg_replication_slot_advance() is a system function for advancing the current confirmed position of a replication slot (either physical or logical). I am wondering if it possible to start replication from given LSN? The desired Nov 13, 2025 · primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 26. conf` file on the standby server to configure it to connect and replicate from the primary Sep 26, 2025 · Replication / Standby Servers server parameters for Azure Database for PostgreSQL flexible server. Nov 13, 2025 · When altering the slot_name, the failover and two_phase property values of the named slot may differ from the counterpart failover and two_phase parameters specified in the subscription. This is the earliest location from which streaming can start on this replication slot. Indeed I had set up a replication slot (via the Decodable CDC source connector for Postgres, which is based on Debezium). The publication name must be distinct from the name of any existing publication in the current database. snapshot_name (text) The identifier of the snapshot exported by the command. The source database server is usually called the Master server, whereas the database server receiving the copied data is called the Replica server. For more on replication slots, see Section 26. If the server side change stream ends with a server shutdown or disconnect, retry in a loop unless --no-loop is specified. This process allows for efficient replication of changes without Jun 29, 2022 · Background: We are running Postgres v13. Qu Feb 2, 2020 · While reading about postgres logical replication, I found a number of examples on the internet using pg_logical_slot_get_changes with the “test_decoding” plugin, but I didn’t find any May 23, 2017 · In response to Create subscription with `create_slot=false` and incorrect slot name at 2017-05-22 20:52:29 from Dmitry Dolgov Responses Re: Create subscription with `create_slot=false` and incorrect slot name at 2017-05-23 06:33:15 from Kuntal Ghosh Browse pgsql-hackers by date Nov 13, 2025 · primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 27. pg_replication_slots The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. The default authentication assumes that you are either logging in as or sudo’ing to the postgres account on the host. Note: When running PostgreSQL v11 or newer Patroni maintains physical replication slots on all nodes that could potentially become a leader, so that replica nodes keep WAL segments reserved if they are potentially required by other nodes. 40 to pg_dump a data snapshot for table1 and restore it on the target logical replication node On replica2: May 8, 2023 · slot_name=my_pub_slot: This option specifies the name of the logical replication slot that we created on the primary server. Slots can be created and dropped either via the streaming replication protocol (see Section 52. 39. Nov 13, 2025 · A replication slot has an identifier that is unique across all databases in a PostgreSQL cluster. Dec 5, 2024 · Learn how to safely drop PostgreSQL replication slots using step-by-step procedures and best practices. 1. name is debezium it doesn't give logs for other insert operations. It is not possible to forcibly drop an active replication slot. We cover only “physical” replication slots in this article. prefix. Without this safeguard, two anomalies are possible where a commit can be received by a subscriber and then vanish from the provider on failover because the failover candidate hadn't Nov 13, 2025 · Because the slot synchronization logic copies asynchronously, it is necessary to confirm that replication slots have been synced to the standby server before the failover happens. The logical streaming replication protocol builds on the primitives of the physical streaming replication protocol. They prevent data loss by ensuring that WAL files are retained for standby nodes, even if those nodes are temporarily disconnected. 6). Jul 13, 2020 · What do you use the slot for? If it's used for logical replication, you need to disable the subscription. The connector generates data change event records and streams them to Kafka topics. com This parameter can only be set in the postgresql. Also it includes primary_conninfo with application_name=replica1. Aug 19, 2022 · Since postgreSQL only one connection can be created from single slot when the slot. Configure Standby Server: Edit the `recovery. So I assume the standard Linux signals meanings apply. standby_slot_names; both logical and physical slots work, but it's generally used for physical slots. Aug 23, 2022 · I have 2 logical replication slots in Postgres 12. You heard that right, you can now do logical replication from a non-primary database! Roberto takes us through an example setup for this. This option cannot be used together with --all. Oct 17, 2022 · Can someone suggest the steps to check pgsql replication status and how to identify if the replication is not happening properly? We use streaming replication with pgsql9. PostgreSQL logical decoding supports output plugins. Feb 10, 2025 · In this blog post, we’ll walk you through the process of setting up physical replication slots in PostgreSQL, from creation on the primary server to configuring the replica to use the slot. Logical Decoding Examples # The following example demonstrates controlling logical decoding using the SQL interface. Nov 13, 2025 · slot_name (text) The name of the newly-created replication slot. Jun 16, 2015 · I have replication slot which I want to delete but when I do delete I got an error that I can't delete from view. See Section 29. 4 Feb 3, 2022 · In this blog post I will explain the new system view pg_stat_replication_slots introduced in PostgreSQL, and how you can use it to obtain information on logical replication in your system. synchronize_slot_names filter. Nov 13, 2025 · primary_slot_name (string) # Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 27. 27. The primary server then streams the WAL (Write-Ahead Logging) data to the slot which the standby server reads and applies. I have replication slots setup. 2 days ago · The default value for pg_failover_slots. Postgres CDC Connector # The Postgres CDC connector allows for reading snapshot data and incremental data from PostgreSQL database. Jun 25, 2024 · >> standby to be ready for failover in terms of logical replication? For >> example, failover_standby_slot_names? > > I feel synchronized better indicates the purpose because we ensure > such slots are synchronized before we process changes for logical Nov 13, 2025 · This section describes the logical replication protocol, which is the message flow started by the START_REPLICATION SLOT slot_name LOGICAL replication command. Restart PostgreSQL service To enable native CDC start points with PostgreSQL as a source, set the slotName extra connection attribute to the name of an existing logical replication slot when you create the endpoint. May 8, 2023 · slot_name=my_pub_slot: This option specifies the name of the logical replication slot that we created on the primary server. > > Is standby_slot_names an accurate name for this GUC? It seems too > generic. Sets the name of the replication slot to use on the sending server. Obviously, the replication slot is inactive. May 14, 2020 · Streaming Replication (SR) is a way of achieving High Availability with PostgreSQL. Usage pg_drop_replication_slot ( slot_name name ) → void The slot to be dropped must be inactive before it can be removed. For Nov 14, 2024 · PostgreSQL 17 introduces failover slots that enhance high-availability setups. 48. It is hard to say how you got into trouble, but probably like this: whenever you say CREATE SUBSCRIPTION, the standby connects to the primary and creates a logical replication slot (unless you explicitly tell it not to). Documentation: primary_slot_name. JdbcConnectionException: ERROR: replication slot "debezium" alr Nov 30, 2018 · The introduction of PostgreSQL streaming physical replication with slots simplified set up of postgres replication. To ensure a successful failover, the standby server must be ahead of the subscriber. Nov 13, 2025 · Notes When dropping a subscription that is associated with a replication slot on the remote host (the normal state), DROP SUBSCRIPTION will connect to the remote host and try to drop the replication slot (and any remaining table synchronization slots) as part of its operation. 4, while logical replication slots were added beginning with version 10. Nickolay Ihalainen looks in detail. conf，默认情况下primary_conninfo中是不包含application_name的 可以通过再primary_conninfo连接串中增加一个application_name=ubuntu02来标识（当前）从节点的standby_name，比如如下 Nov 5, 2021 · The PostgreSQL way is to run pg_basebackup which syncs it over the replication slot. 2. For more on replication slots, see Section 27. To find a replication slot, run the following on the primary: May 19, 2025 · Discover how PostgreSQL 17 enhances high availability in logical replication with failover logical slots, reducing downtime and ensuring seamless data continuity. 3 days ago · Re: How can end users know the cause of LR slot sync delays? at 2025-11-24 05:49:23 from Amit Kapila Re: How can end users know the cause of LR slot sync delays? at 2025-11-24 05:53:56 from shveta malik To make this work, create the replication slot separately (using the function pg_create_logical_replication_slot with the plugin name pgoutput) and create the subscription using the parameter create_slot = false. Sep 30, 2024 · primary_slot_name = 'pgstandby_slave01' 以上是postgresql 16版本的pg_basebackup生成的备份文件中的postgresql. 4 and have enabled logical replication for reading CDC data for a select few tables. Step 4: Pause replication on replica2::10. 6. 1 for details about how publications fit into the logical replication community. pg_replication_slot_advance() was added in PostgreSQL 11. Streaming replication allows a standby server to stay more up-to-date than is possible with file-based log shipping. After that snapshot is complete, the connector continuously captures row-level changes that insert, update, and delete database content and that were committed to a PostgreSQL database. For the publication name, before I was indeed working with 1 publication but I will adjust this according to your feedback. I then had stopped that connector, causing the slot Feb 7, 2019 · Data replication has stopped from one of my three nodes. Slots can be created and dropped either via the streaming replication protocol (see Section 55. Otherwise, if restart_lsn of a replication slot falls behind the current LSN by more than the given size, the standby using the slot may no longer be able to continue replication due to removal of required WAL files. --drop-slot Drop the replication slot with the name specified by --slot, then exit. See full list on hevodata. Jun 21, 2024 · On Fri, Jun 21, 2024 at 11:37:54AM -0400, Bruce Momjian wrote: > The release notes have this item: > > Allow specification of physical standbys that must be synchronized > before they are visible to subscribers (Hou Zhijie, Shveta Malik) > > The new server variable is standby_slot_names. Unlike streaming replication connections, replication slots have to be created and deleted explicitly. --start Begin streaming changes from the logical replication slot specified by --slot, continuing until terminated by a signal. The first time it connects to a PostgreSQL server or cluster, the connector takes a consistent snapshot of all schemas. As intended, there is nothing for physical replication slots here. Includes step-by-step instructions and screenshots. 4, it is also necessary and useful to check for leftover replication slots. Dec 27, 2024 · Summary: In this article, we will learn how to troubleshooting replication in PostgreSQL. Dependencies # In order to setup the Postgres CDC connector, the following table provides dependency information for both projects using a build Jun 29, 2022 · Background: We are running Postgres v13. If this option is not specified, the subscription name is assigned to the replication slot name. Nov 30, 2022 · Now a common cause for this kind of issue are replication slots which are not advanced: in that case, Postgres will hold on to all WAL segments after the latest log sequence number (LSN) which was confirmed for that slot. Table of Contents Introduction Monitoring Postgres Logical Replication Status Analyzing Postgres Replication Lag Monitoring Replication Slot Usage Dropping Unused Replication Slots Creating Replication Slots Optimizing Logical Replication with pglogical Introduction Postgres replication is a powerful tool Nov 13, 2025 · Use of functions for replication slots is restricted to superusers and users having REPLICATION privilege. 28. name instead of the default slot. Perhaps this view could be called differently, but now it's too late to rename. Nov 13, 2025 · 47. I am using docker container for Postgres & kafka. To use it in a playbook, specify: community. Nov 13, 2025 · Additionally, the replication management functions pg_replication_slot_advance, pg_logical_slot_get_changes, and pg_logical_slot_peek_changes, when used with logical failover slots, will block until all physical slots specified in synchronized_standby_slots have confirmed WAL receipt. primary_slot_name 是一个 配置参数，用于确定流复制备用服务器使用的复制槽的名称。 primary_slot_name 添加于 PostgreSQL 9. You can see the WAL availability of replication slots in pg_replication_slots. Learn how to use replication slots with PostgreSQL's streaming physical replication. If this slot should be active, because you have a secondary site configured using that slot: Look for the PostgreSQL logs for the secondary site, to view why the replication is not running. 6 and Chapter 46. Slots can be created and dropped either via the streaming replication protocol (see Section 54. Jan 24, 2023 · PostgreSQL Replication is when data is copied from one database server to another. Nov 13, 2025 · The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. consistent_point (text) The WAL location at which the slot became consistent. I am able to commit to a table and see it on the standby. This article reflects on recent in-depth experience with PostgreSQL, focusing on logical replication. synchronize_failover_slot_names can be modified to specify which slots should be synchronized (default is all pglogical/bdr slots Replication Slots The Logical Replication capture method uses PostgreSQL replication slots. When there is an associated client connection, slots are considered active. Physical replication slots were introduced to PostgreSQL with version 9. Mar 16, 2023 · Vigneshwaran C explained the internals of PostgreSQL Logical Replication during PGConf India - if you were not able to attend, you can read all here. Mar 6, 2019 · The available options depend on the logical decoding plugin of the replication slot, which is specified when the replication slot is created. Any ideas? postgres=# SELECT * FROM pg_replication_slots ; slot_name | plug Nov 25, 2024 · 5. To avoid “Peer authentication failed for user postgres” error, use postgres user as a become_user 指定 replication slots 所允许的在检查点时保留在 pg_wal 目录中的 WAL 文件的最大尺寸。 如果 max_slot_wal_keep_size 为 -1（默认值），复制槽可能会保留无限数量的 WAL 文件。 Nov 13, 2025 · The --enable-two-phase and --enable-failover options can be specified with --create-slot. I have a postgres RDS database on AWS. The slot name must contain only a combination of lower case letters, numbers, and the underscore character, and can be a maximum of 63 characters long (NAMEDATALEN). Change history PostgreSQL 17 option failover added (commit c393308b) PostgreSQL 16 can be executed on a standby (commit 0fdab27a) PostgreSQL 14 option two_phase added (commit 19890a06) PostgreSQL 10 The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. So can I know a way for siddhi CDC app to take custom slot. This involves creating a publication on the source database, which defines the set of data to replicate. It explains how PostgreSQL logical replication works, outlines best practices Mar 16, 2020 · The replication slot created by a kafka-connector connector is filling up. This should allow multi capture in most situations. Therefore, SIGINT or SIGQUIT should be acceptable Nov 13, 2025 · The order of the multiple replication slot name switches must match the order of database switches. How PostgreSQL Slots Work When a standby server is configured to replicate changes from a primary server using PostgreSQL slots, the primary server allocates a slot with a specific name to the standby server. Jan 22, 2020 · Learn how PostgreSQL replication slots can help with WAL build-ups on the primary and how to monitor them to avoid unbounded disk growth. 0 and pgsql9. Existing replication slots and their state can be seen in the pg_replication_slots view. jdbc. primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the primary via streaming replication to control resource removal on the upstream node (see Section 26. For example: hvr_myhub_mychn_myloc. To install it use: ansible-galaxy collection install community. On the destination database, you create a subscription that connects to the publication and applies the replicated changes. A publication is essentially a group of tables whose data changes are intended to be replicated through logical replication. Qu Nov 13, 2025 · primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 26. Throughout the process Dec 9, 2020 · Problem statement As some of you may know, a number of external tools have come to rely on some hacks that manipulate internal replication slot data in order to support failover of a logical replication upstream to physical replicas of that upstream. I put the following parameter group option on it (only showing the diff from defau To make this work, create the replication slot separately (using the function pg_create_logical_replication_slot with the plugin name pgoutput) and create the subscription using the parameter create_slot = false. Nov 13, 2025 · Each replication slot has a name, which can contain lower-case letters, numbers, and the underscore character. Supports check_mode. This Jul 7, 2021 · Hi, hackers The documentation [1] says: When dropping a subscription that is associated with a replication slot on the remote … Nov 13, 2025 · Each replication slot has a name, which can contain lower-case letters, numbers, and the underscore character. Default Replication Slot Naming HVR uses the following naming convention for these replication slots: hvr_hub_channel_location. name? Apr 17, 2024 · engineName=core We use Debezium as Java lib and host it in kube cluster. In this blog, we will be discussing the essential parameters and configuration for streaming replication in PostgreSQL. Apr 6, 2025 · Why do I use PostgreSQL in this AI age? because PG comes with the best vector search extension — PGVector, and as a Database itself, it is the best relational database ever among the databases I have used before. Does anyone have insight as to what happened or how to fix it? DETAILS: Nodes SS1, Dec 9, 2024 · This article explains how PostgreSQL 17's failover slots feature simplifies logical replication to ensure seamless replication even during failover scenarios. Is the pgoutput plugin responsible for all the magic? Nov 13, 2025 · To make this work, create the replication slot separately (using the function pg_create_logical_replication_slot with the plugin name pgoutput) and create the subscription using the parameter create_slot = false. ) Replication slots are uniquely identified by names. host replication repluser [standby-ip]/32 md5 This line allows standby server access from repluser from specified IP address using password. However publications have the same name in every DB (not sure if that matters). The core issue is that if somebody forgets to drop a replication slot, XLOG can accumulate, just as it does in the case of broken archive commands. A guide for database engineers covering active slot handling, troubleshooting, etc. Learn how to set up, configure, and manage GitLab Geo database replication to keep primary and secondary sites synchronized, including requirements, replication methods, and troubleshooting guidance. auto. Here is a basic command to run on each standby server, modify for your system. . 4 added (commit 858ec118) The Postgres CDC connector allows for reading snapshot data and incremental data from PostgreSQL database. conf，默认情况下primary_conninfo中是不包含application_name的 可以通过再primary_conninfo连接串中增加一个application_name=ubuntu02来标识（当前）从节点的standby_name，比如如下 Sep 30, 2024 · primary_slot_name = 'pgstandby_slave01' 以上是postgresql 16版本的pg_basebackup生成的备份文件中的postgresql. We are using the pgoutput plugin and the basic setup is working fine. For more on replication slots, see Section 25. 4) or via SQL functions (see Section 9. 40 to pg_dump a data snapshot for table1 and restore it on the target logical replication node On replica2: Aug 27, 2019 · But I am Unable to create multiple replication slot for postgres debezium connector. The names for these slots have to be unique for an entire PostgreSQL cluster. Change history PostgreSQL 17 option failover added (commit c393308b) PostgreSQL 16 can be executed on a standby (commit 0fdab27a) PostgreSQL 14 option two_phase added (commit 19890a06) PostgreSQL 10 Monitoring Physical Replication Slots The view pg_replication_slots gives one row for each replication slot in the primary. Nov 13, 2025 · Because the slot synchronization logic copies asynchronously, it is necessary to confirm that replication slots have been synced to the standby server before the failover happens. Nov 21, 2017 · The PostgreSQL documentation says, --start Begin streaming changes from the logical replication slot specified by --slot, continuing until terminated by a signal. Append the following to the end of pg_hba. 0. conf file or on the server command line. If the secondary site is no longer able to reconnect: Remove the slot using the PostgreSQL console session: Learn how to drop a replication slot in PostgreSQL with this easy-to-follow guide. Nov 13, 2025 · primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 27. The snapshot is valid until a new command is executed on this connection or the The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. 4。 Starting from PostgreSQL 9. primary_slot_name (string) Optionally specifies an existing replication slot to be used when connecting to the sending server via streaming replication to control resource removal on the upstream node (see Section 26. Feb 10, 2022 · As you can see, primary_slot_name has exactly the same value as we specified when executing pg_basebackup with -S flag. postgresql_slot – Add or remove replication slots from a PostgreSQL database ¶ Note This plugin is part of the community. Jun 1, 2023 · Postgres 16 is in beta and we are all excited about the updated logical decoding features. You turn on PostgreSQL logical replication and logical decoding for Amazon RDS with a parameter, a replication connection type, and a security role. postgresql_slot. We also discuss their benefits and disadvantages. Each slot is associated with: the oldest WAL required by the consumer of the slot - WAL files later than this are not deleted during checkpoints the oldest transaction ID required to be An alternative name can be specified as application_name in the connection information of the subscription. If then Dec 3, 2024 · Explore failover logical replication slots in Postgres v17, allowing you to keep track of how far a specific subscriber has consumed a database’s change event stream. Any replication slot may be listed in pg_failover_slots. --subscription=name The subscription name to set up the logical replication. In case the node is absent and its member key in DCS gets expired, the corresponding replication slot is dropped after member_slots_ttl (default value is Configuration Reference for Debezium PostgreSQL Source Connector for Confluent Platform You can configure the Postgres Source connector using a variety of configuration properties. Allow replication connections in pg_hba. This patch provides a way to ensure that physical standbys that are potential failover candidates … Nov 13, 2025 · Avoid duplicative log messages about invalid primary_slot_name settings (Fujii Masao) § Avoid failures when synchronized_standby_slots references nonexistent replication slots (Shlok Kyal) § Remove the unfinished slot state file after failing to write a replication slot's state to disk (Michael Paquier) § Starting in community PostgreSQL 17, a new feature to automatically synchronize logical replication slots from primary to standby servers has been introduced through the parameter sync_replication_slots or the related function pg_sync_replication_slots(), which manually synchronizes slots on execution. This Feb 27, 2022 · You are indeed correct that I was using unique slot names and database server name. → record ( slot_name name, lsn pg_lsn ) Before PostgreSQL 16, pg_create_logical_replication_slot() could not be executed on a standby. Suddenly one of them (100 fields, 16K records) failed couple of days ago. drop_extra_slots Controls what happens to extra slots on the standby that aren't found on the primary using the pg_failover_slots. The example must be using the test_decoding plugin, which is included with PostgreSQL as a contrib module for testing and playing. If this parameter is changed while the WAL receiver process is running, that process is signaled to shut down and expected to restart with the new setting. As an offset storage we use Postgresql table NotePhysical replication slots were introduced to PostgreSQL with version 9. The pg_replication_slots view provides a listing of all replication slots that currently exist on the database cluster, along with their current state. Change history PostgreSQL 9. conf: pglogical in its shared_preload_libraries hot_standby = on hot_standby_feedback = on pglogical. 6 and Chapter 49. debezium. A replication slot ensures that data remains reliable and consistent between nodes during replication, whereas a failover slot ensures consistency between nodes, specifically during and after a failover. pgoutput is the standard one used for the built-in logical replication. We also have several databases inside RDS instance so for every DB we have separate Debezium instance with unique slot. If you set up a logical replication slot and don't read from the slot, data can be written and quickly fill up your DB instance's storage. name, name and topic. Nov 13, 2025 · Avoid duplicative log messages about invalid primary_slot_name settings (Fujii Masao) § Avoid failures when synchronized_standby_slots references nonexistent replication slots (Shlok Kyal) § Remove the unfinished slot state file after failing to write a replication slot's state to disk (Michael Paquier) § Nov 13, 2025 · A replication slot has an identifier that is unique across all databases in a PostgreSQL cluster. Nov 30, 2021 · Postgres logical replication initial synchronization is very slow process, especially if original database is quite big. pg_replication_slots is a system catalogue view listing all replication slots. Mar 17, 2022 · An important word in the documentation: The pg_stat_replication_slots view will contain one row per logical replication slot, showing statistics about its usage. 4. Nov 12, 2025 · primary_slot_name naming a physical replication slot on Provider1 to be used only by Provider2 postgresql. Retrieve Replication Slot Details: After successfully creating the replication slot, PostgreSQL will return a result set containing the slot’s details, including its `slot_name` and `consistent_point`. Before you can use logical … → record ( slot_name name, lsn pg_lsn ) Before PostgreSQL 16, pg_create_logical_replication_slot() could not be executed on a standby. pg_replication_slot_advance ( slot_name name, upto_lsn pg_lsn ) → record ( slot_name name, end_lsn pg_lsn ) Advances the current confirmed position of a replication slot named slot_name. Nov 13, 2025 · An alternative name can be specified as application_name in the connection information of the subscription. conf file & also different slot. May 2, 2023 · SELECT pg_drop_replication_slot('name of the slot'); If you need more than 10 replication slots, increase max_replication_slots on the primary and restart it. The replication slot on the errant node has disappeared. Many of these functions have equivalent commands in the replication protocol; see Section 54. Slots persist independently of the connection using them and are crash-safe. synchronize_slot_names is name_like:%, which matches all logical replication slots and synchronizes all slots. Jan 10, 2024 · Beginning with ensuring that your PostgreSQL version supports logical replication, you then proceed to configure the databases for replication. Aug 4, 2021 · primary_slot_name - replication slot name to be used. postgresql collection (version 1. but still it did not create 2 replication slot for me. name. Then I check a couple of th primary_slot_name: Context: postmaster, Needs restart: true • Sets the name of the replication slot to use on the sending server. Nov 13, 2025 · Description CREATE PUBLICATION adds a new publication into the current database. I have few more standbys. The --slot is required for this action. Slots where active is f are inactive. conf. 0). Replication Slots (Note: there are “physical” and “logical” replication slots. postgresql. 6 and Chapter 47. pg_replication_slots was added in PostgreSQL 9. Mar 16, 2018 · Here the docs say: To make this work, create the replication slot separately (using the function pg_create_logical_replication_slot with the plugin name pgoutput) According to the docs, this is possible, but pg_create_logical_replication_slot only creates a regular replication slot. How can I see from the master what other standbys I h May 31, 2023 · 0 information provided about the function in PostgreSQL documentation. I tried setting up max_replication_slots = 2 in postgressql. 6 を参照）。 Mar 8, 2024 · Introduce a new GUC 'standby_slot_names'. fbm wkcnn owewce ztjsb yomdvb anbmzn mwfnzk gcphau qky dnrgbc twgm ogqcrx ytu uikb rojmojk