fme_db_transaction
As each feature is processed by the writer, it is checked for an attribute called fme_db_transaction.
The value of this attribute specifies whether the writer should commit or rollback the current transaction. The value of the attribute can be one of:
COMMIT_BEFORECOMMIT_AFTERROLLBACK_AFTERIGNORE
If the fme_db_transaction attribute is not set in any features, the entire write operation occurs in a single transaction.
Note: To use this capability, the Transaction Interval (for ArcSDE, this is called Features Per Transaction) must be set to VARIABLE.