Instances created before db adapter poll completes.

Hi,
We have been seeing a couple of instances where these instances seem to have been created before the database adapter could finish off it's polling cycle.
The DB Adapter in our case does a logical delete and updates a column with 'Y', the timestamp of which is updated in another column of the same table.The instance when it gets created goes and updates another timestamp in the same table.
The problem is that in some cases the timestamp of instance is greater than the timestamp of database adapter leading to other issues.
Can anyone explain what is happening here and any possible resolution for the same.
Thanks,
Shishir

Hi Shishir,
If I understand your scenario correctly then below happens:
DB Adapter polls a table and picks up the records for processing. After picking up it internally updates a particular column (logical delete) as configured in Adapter configuration. Then in BPEL Adapter process there is a step where you update another column in same table (timestamp). And when you see Adapter process instance in BPEL console, you observed that BPEL process instance creation timestamp > update database column timestamp for the processed record.
Is this your problem? If yes then its a normal behavior.
When the BPEL Adapter process is instantiated then its in memory and is only dehydrated when transaction is committed, in other words the in memory BPEL instance will be persisted to BPEL internal database when the process is finished or if it encounters explicit checkpoint or wait kind of activities. And when this BPEL process is dehydrated that is the process instance creation time which you see on BPEL Console.
Please let me know if this clarifies your problem or otherwise explain me further if I understood it wrong.
Thanks.
Regards,
Ankit A.
http://fusionmusings.blogspot.com
Edited by: AnkitAggarwal on Apr 14, 2010 2:00 AM

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