To configure the connector to read rows in an Oracle table or view, you must specify the source table or view or define a complete SELECT statement or PL/SQL block.
If you specify a SELECT statement, the connector runs the statement only once and sends all of the rows that are returned for that statement to the output link.
If you specify a PL/SQL block, the connector runs the PL/SQL block only once and returns the output bind variables that are specified in the block. A single record is sent to the output link. A PL/SQL block is useful for running a stored procedure that takes no input parameters but that returns values through one or more output parameters.