Amazon Aurora PostgreSQL

Last updated on Mar 18, 2024

Starting Release 2.19, Hevo has stopped supporting XMIN as a query mode for all variants of the PostgreSQL Source. As a result, you will not be able to create new Pipelines using this query mode. This change does not affect existing Pipelines. However, you will not be able to change the query mode to XMIN for any objects currently ingesting data using other query modes.

Amazon Aurora PostgreSQL is a fully managed, PostgreSQL-compatible relational database engine that combines the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open-source databases. Its enterprise database capabilities combined with compatibility with PostgreSQL helps deliver throughput that is much higher compared to the standard PostgreSQL running on the same hardware.

You can ingest data from your Amazon Aurora PostgreSQL database using Hevo Pipelines and replicate it to a Destination of your choice.


Source Considerations

  • Amazon Aurora PostgreSQL does not support Logical Replication on read replicas. To enable log-based replication, select a master database instance.

  • If you add a column with a default value to a table in PostgreSQL, entries with it are created in the WAL only for the rows that are added or updated after the column is added. As a result, in the case of log-based Pipelines, Hevo cannot capture the column value for the unchanged rows. To capture those values, you need to:

    • Restart the historical load for the respective object.

    • Run a query in the Destination to add the column and its value to all rows.

  • When you delete a row in the Source table, its XMIN value is deleted as well. As a result, for Pipelines created with the XMIN ingestion mode, Hevo cannot track deletes in the Source object(s). To capture deletes, you need to restart the historical load for the respective object.

  • XMIN is a system-generated column in PostgreSQL, and it cannot be indexed. Hence, to identify the updated rows in Pipelines created with the XMIN ingestion mode, Hevo scans the entire table. This action may lead to slower data ingestion and increased processing overheads on your PostgreSQL database host. Due to this, Hevo recommends that you create the Pipeline in the Logical Replication mode.

Note: The XMIN limitations specified above are applicable only to Pipelines created using the XMIN ingestion mode, which is currently available for Early Access.


Limitations

  • The data type Array in the Source is automatically mapped to Varchar at the Destination. No other mapping is currently supported.

  • Hevo does not support data replication from foreign tables, temporary tables, and views.


See Also


Revision History

Refer to the following table for the list of key updates made to this page:

Date Release Description of Change
Mar-18-2024 2.21.2 Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to add information about the Load all CA certificates option.
Mar-05-2024 2.21 Added the Data Replication section.
Feb-05-2024 NA Updated sections, Specify Amazon Aurora PostgreSQL Connection Settings and Object and Query Mode Settings to add information about the XMIN ingestion mode.
Jan-22-2024 2.19.2 Updated section, Object and Query Mode Settings to add a note about the enhanced object selection flow available for log-based Pipelines.
Jan-10-2024 NA - Updated section, Source Considerations to add information about limitations of XMIN query mode.
- Removed mentions of XMIN as a query mode.
Nov-03-2023 NA Renamed section, Object Settings to Object and Query Mode Settings.
Oct-27-2023 NA Added subsection, Create a database user.
Oct-18-2023 NA Updated section, Apply the parameter group to your PostgreSQL database to add information about rebooting an AWS instance.
Sep-19-2023 NA Updated section, Limitations to add information about Hevo not supporting data replication from certain tables.
Sep-11-2023 NA Updated the page as per the latest AWS UI.
Jun-26-2023 NA Udpated section, Source Considerations to add information about capturing data for columns with default values.
Apr-21-2023 NA Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to add a note to inform users that all loaded Events are billable for Custom SQL mode-based Pipelines.
Mar-09-2023 2.09 Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to mention about SEE MORE in the Select an Ingestion Mode section.
Dec-19-2022 2.04 Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to add information that you must specify all fields to create a Pipeline.
Dec-07-2022 2.03 Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to mention about including skipped objects post-Pipeline creation.
Dec-07-2022 2.03 Updated section, Specify Amazon Aurora PostgreSQL Connection Settings to mention about the connectivity checker.
Jul-04-2022 NA - Added sections, Specify Amazon Aurora PostgreSQL Connection Settings and Object Settings.
Apr-25-2022 NA - Added section, Source Considerations.
- Added a prerequisite for connecting to a master database if logical replication is required.
Feb-07-2022 1.81 Updated section, Whitelist Hevo’s IP Address to remove details about Outbound rules as they are not required.
Jan-24-2022 1.80 Removed from Limitations that Hevo does not support UUID datatype as primary key.
Dec-20-2021 1.78 Updated section, Configure the parameters.
Sep-09-2021 1.71 Updated the section, Limitations to include information about columns with the UUID data type not being supported as a primary key.
Jun-14-2021 1.65 Updated the Grant Privileges to the User section to include latest commands.

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