Partition points mark the boundaries between threads in a pipeline. The Integration Service redistributes rows of data at partition points. You can add partition points to increase the number of transformation threads and increase session performance.
When you configure a session to read a source database, the Integration Service creates a separate connection and SQL query to the source database for each partition. You can customize or override the SQL query.
When you configure a session to load data to a relational target, the Integration Service creates a separate connection to the target database for each partition at the target instance. You configure the reject file names and directories for the target. The Integration Service creates one reject file for each target partition.
You can configure a session to read a source file with one thread or with multiple threads. You must choose the same connection type for all partitions that read the file.
When you configure a session to write to a file target, you can write the target output to a separate file for each partition or to a merge file that contains the target output for all partitions. You can configure connection settings and file properties for each target partition.
When you create a partition point at transformations, the Workflow Manager sets the default partition type. You can change the partition type depending on the transformation type.