Ingres as Target

Fivetran HVR supports integrating changes into Ingres database. This section describes the configuration requirements for integrating changes using Integrate and Refresh into Ingres location. For the list of supported Ingres versions, into which HVR can integrate changes, see Integrate changes into location in Capabilities.

• HVR uses Ingres OpenAPI interface to write data into Ingres during Integrate and Refresh.
• HVR uses Ingres SQL command 'copy table ... () from program' during Burst Integrate and Bulk Refresh.

For HVR to integrate changes into an Ingres installation on a remote machine, special database roles (hvr_integrate and hvr_refresh) must be created in that Ingres installation. Execute the following script to create these roles:

• In UNIX & Linux,

  $ sql iidbdb < $HVR_HOME/dbms/ingres/hvrrolecreate.sql
  

• In Windows,

  C:\>sql iidbdb < %HVR_HOME%\sql\ingres\hvrrolecreate.sql
  

Intermediate Directory

This option in the HVR UI allows you to specify a directory path for storing intermediate (temporary) files generated during Compare. These files are created during both "direct file compare" and "online compare" operations.

This option is displayed in the location creation dialog when creating a new location, and in the Source and Target Properties pane on the Location Details page when editing an existing location.

Using an intermediate directory can enhance performance by ensuring that temporary files are stored in a location optimized for the system's data processing needs.

This setting is particularly relevant for target file locations, as it determines where the intermediate files are placed during the Compare operation. If this option is not enabled, the intermediate files are stored by default in the integratedir/_hvr_intermediate directory, where integratedir is the replication DIRECTORY (File_Path) defined for the target file location.

Intermediate Directory is Local

This option indicates that the Intermediate Directory will be created on the local drive of the location's server. This option is displayed when you select the Intermediate Directory option in the HVR UI. It is selected by default and cannot be modified.

Storing intermediate files locally is crucial for optimizing performance by reducing network latency and avoiding potential permission issues associated with remote storage. It enables HVR to process data more efficiently by leveraging the speed and reliability of local storage. This is particularly beneficial when the HVR Agent has access to ample local storage, allowing it to handle large data volumes without relying on networked storage solutions.