DB Adapter polling does not work in BPEL (10.1.3.4)

Question

I've created a DB Adapter to poll a single database table, using the Sequencing polling strategy. I've set up a last_updated_date in my root table, and last_read_date in the sequencing table. The adapter wizard generates this sql:
SELECT BVUNAME, FNAME, LNAME, JTITLE, PROCESS_ID, LAST_UPDATED_DATE FROM XXONT_WS_CONTACTS WHERE ((LAST_UPDATED_DATE > #LAST_READ_ID) AND (LAST_UPDATED_DATE < SYSDATE)) ORDER BY LAST_UPDATED_DATE ASC
Why is this generating "#LAST_READ_ID" and not "#LAST_READ_DATE"? Is this why the BPEL receive activity does not ever return anything?

Answer 1

Hi there,
#LAST_READ_ID is an internal parameter marker name. For simplicity its name is always LAST_READ_ID so that is not the problem. Its value is obtained by doing a select from the sequencing helper table, from the column indicated by SequencingValueColumn (in 10.1.3 SequencingValueFieldName).
Make sure your sequencing table is setup correctly and look at the logs to see if there are any exceptions.
Thanks
Steve