Merge pull request #4649 from hariramt/task/MigrationUpdate-1stApril2026

Online migration update for pgoutput

Author: prmerger-automator[bot]

articles/postgresql/migrate/migration-service/includes/alloy-db/prerequisites-migration-service-postgresql-online-alloy-db.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before starting the migration with the Azure Database for PostgreSQL migration service, it's important to fulfill the following prerequisites, specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding - Source Setup](#install-test_decoding---source-setup)
 - [Configure target setup](#configure-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure network setup](#configure-network-setup)
@@ -29,11 +28,11 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 > [!NOTE]  
 > The migration service in Azure Database for PostgreSQL supports connections using the IP address for source Google AlloyDB for PostgreSQL. The format `myproject:myregion:myinstance` isn't supported.
 
-### Install test_decoding - source setup
-
-- **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
-- In Google AlloyDB for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
-- For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used.
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> - In Google AlloyDB for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
+> - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
 
 ### Configure target setup
 
@@ -43,7 +42,7 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 
 ### Enable CDC as a source
 
-- `test_decoding` logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - To ensure the migration user has the necessary replication privileges, execute the following SQL command:
 
 ```sql

articles/postgresql/migrate/migration-service/includes/aurora/prerequisites-migration-service-postgresql-online-aurora.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before you start a migration by using the migration service in Azure Database for PostgreSQL, it's important to complete the following prerequisites. These prerequisites are specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding for source setup](#install-test_decoding-for-source-setup)
 - [Configure the target setup](#configure-the-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure the network setup](#configure-the-network-setup)
@@ -24,10 +23,11 @@ Before you start a migration by using the migration service in Azure Database fo
 
 The source PostgreSQL server version must be 9.5 or later. If the source PostgreSQL version is earlier than 9.5, upgrade the version to 9.5 or later before you start the migration.
 
-### Install test_decoding for source setup
-
-- The test_decoding plugin receives Write-Ahead Logging (WAL) through the logical decoding mechanism. The plugin decodes WAL into text representations of the operations that are performed.
-- In Amazon RDS for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. You can easily set up logical replication slots and stream WAL changes, for example, for change data capture (CDC) or for replication to external systems.
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used. 
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> - In Amazon RDS for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. You can easily set up logical replication slots and stream WAL changes, for example, for change data capture (CDC) or for replication to external systems.
+> - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
 
 For more information about the test_decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html).
 
@@ -39,7 +39,7 @@ For more information, see [Create an Azure Database for PostgreSQL flexible serv
 
 ### Enable CDC as a source
 
-- The test_decoding logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - To allow the migration user to access replication permissions, execute the following command:
 
   ```bash

articles/postgresql/migrate/migration-service/includes/cloud-sql/prerequisites-migration-service-postgresql-online-cloud-sql.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before starting the migration with the Azure Database for PostgreSQL migration service, it's important to fulfill the following prerequisites, specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding - Source Setup](#install-test_decoding---source-setup)
 - [Configure target setup](#configure-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure network setup](#configure-network-setup)
@@ -29,11 +28,11 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 > [!NOTE]  
 > The migration service in Azure Database for PostgreSQL supports connections using the IP address for source Google Cloud SQL for PostgreSQL. The format `myproject:myregion:myinstance` isn't supported.
 
-### Install test_decoding - source setup
-
-- **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
-- In Google Cloud SQL for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
-- For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used. 
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> - In Google Cloud SQL for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
+> - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
 
 ### Configure target setup
 
@@ -43,7 +42,7 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 
 ### Enable CDC as a source
 
-- `test_decoding` logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - To ensure the migration user has the necessary replication privileges, execute the following SQL command:
 
 ```sql

articles/postgresql/migrate/migration-service/includes/enterprise-db/prerequisites-migration-service-postgresql-online-enterprise-db-extended-server.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before starting the migration with the Azure Database for PostgreSQL migration service, it's important to fulfill the following prerequisites, specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding - Source Setup](#install-test_decoding---source-setup)
 - [Configure target setup](#configure-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure network setup](#configure-network-setup)
@@ -26,11 +25,11 @@ The source PostgreSQL server version must be 9.5 or later.
 
 If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher before you start the migration.
 
-### Install test_decoding - source setup
-
-- **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
-- In EDB Extended server, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
-- For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used.
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> - In EDB Extended server, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
+> - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
 
 ### Configure target setup
 
@@ -40,7 +39,7 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 
 ### Enable CDC as a source
 
-- `test_decoding` logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - To ensure the migration user has the necessary replication privileges, execute the following SQL command:
 
 ```sql

articles/postgresql/migrate/migration-service/includes/iaas/prerequisites-migration-service-postgresql-online-iaas.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before starting the migration with the Azure Database for PostgreSQL migration service, it's important to fulfill the following prerequisites, specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding - Source Setup](#install-test_decoding---source-setup)
 - [Configure target setup](#configure-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure network setup](#configure-network-setup)
@@ -27,9 +26,9 @@ The source PostgreSQL server version must be 9.5 or later.
 
 If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher before you start the migration.
 
-### Install test_decoding - Source Setup
-
-- **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used.
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
 
 - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html).
 
@@ -43,7 +42,7 @@ When migrating across PostgreSQL versions (major or minor), ensure compatibility
 
 ### Enable CDC as a source
 
-- `test_decoding` logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - In the source PostgreSQL instance, set the following parameters and values in the postgresql.conf configuration file:
     - Set `wal_level` to `logical`.
     - Set `max_replication_slots` to a value greater than 1. Should be greater than the number of databases selected for migration.

articles/postgresql/migrate/migration-service/includes/rds/prerequisites-migration-service-postgresql-online-rds.md

@@ -12,7 +12,6 @@ ms.topic: include
 Before starting the migration with the Azure Database for PostgreSQL migration service, it is important to fulfill the following prerequisites, specifically designed for online migration scenarios.
 
 - [Verify the source version](#verify-the-source-version)
-- [Install test_decoding - Source Setup](#install-test_decoding---source-setup)
 - [Configure target setup](#configure-target-setup)
 - [Enable CDC as a source](#enable-cdc-as-a-source)
 - [Configure network setup](#configure-network-setup)
@@ -26,11 +25,11 @@ The source PostgreSQL server version must be 9.5 or later.
 
 If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher before you start the migration.
 
-### Install test_decoding - Source Setup
-
-- **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
-- In Amazon RDS for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
-- For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
+> [!NOTE]  
+> - [PgOutput](../../concepts-required-user-permissions.md#online-migration-using-pgoutput---required-publication-permissions) is the default logical decoding plugin used for Online migration. If source PostgreSQL version <10, **test_decoding** plugin is used.
+> - **test_decoding** receives WAL through the logical decoding mechanism and decodes it into text representations of the operations performed.
+> - In Amazon RDS for PostgreSQL, the test_decoding plugin is preinstalled and ready for logical replication. This allows you to easily set up logical replication slots and stream WAL changes, facilitating use cases such as change data capture (CDC) or replication to external systems.
+> - For more information about the test-decoding plugin, see the [PostgreSQL documentation](https://www.postgresql.org/docs/16/test-decoding.html)
 
 ### Configure target setup
 
@@ -40,7 +39,7 @@ If the source PostgreSQL version is less than 9.5, upgrade it to 9.5 or higher b
 
 ### Enable CDC as a source
 
-- `test_decoding` logical decoding plugin captures the changed records from the source.
+- Logical decoding plugin captures the changed records from the source.
 - To allow the migration user to access replication privileges, execute the following command:
 
 ```bash