To push Sequence Generator transformation logic to a database, you must configure the session for pushdown optimization with sequences.
If you configure a session to push Sequence Generator transformation logic to a database, the Integration Service completes the following tasks:
Creates a sequence object in the database
. The Integration Service creates the sequence object in the database based on the Sequence Generator transformation logic. The Integration Service creates a unique name for each sequence object. To create a unique sequence object name, it adds the prefix PM_S to a value generated by a hash function.
Generates the SQL query and executes it against the database
. The Integration Service generates and executes the SQL query to push the Sequence Generator transformation logic to the database.
Drops the sequence object from the database.
When the transaction completes, the Integration Service drops the sequence object that it created in the database.
