FTP adapter failing sometimes, msg:Error connecting to the OAI Repository

Question

Hi,
I have imported a dump due to curropt metadata definition. The import was successful without any warning/error.
I have recreated the event , but when I am testing the same, getting following error in the FTP adapter, though the adadpter is started successfully, connecting to hub /repository, still trowing below errror when it translates a file:
Sometimes it works when the adadpter is killed & restarted.
Ususally happening when a new event is created & run for the first time...
++++++++++++++++++++++++++++++++++++++++++++++++++++
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<A N = "do_no">428997</A>
<A N = "mdo_no">
</A>
</AO>
</AO>
</AO>
</B>
</MSG>.
Mon Oct 03 17:18:45 SGT 2005: Transport logs:
Message linked list has 0 elements.
Mon Oct 03 17:18:45 SGT 2005: Transport logs:
FileReceiver.sendResponse() completed.
Mon Oct 03 17:18:45 SGT 2005: Transport logs:
FileReceiver.receive() is invoked.
Mon Oct 03 17:18:45 SGT 2005: Transport logs:
The message queue is empty.
Mon Oct 03 17:18:45 SGT 2005: Initializing connection to the Repository...
Mon Oct 03 17:18:46 SGT 2005: Connected to the Repository.
Mon Oct 03 17:18:46 SGT 2005: Error connecting to the OAI Repository. Please make sure that the hub database and the OAI Repository are started properly. Once everything is started properly, the connection will be automatically re-established. However, if you have provided incorrect parameters concerning your hub database or the OAI Repository during installation of this Adapter, please stop the Adapter, fix the information and restart.
oracle.aob.repository.aobRepositoryCartridge.RepositoryException
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Any pointers on this will be a great help for me.
Regards,
MOhit

Answer 1

In same context, what I observed is that the FTP adapter throws above error if a file is send again for translation...ie; when i try to use the same file for testing putingit in FTO dir , FTP adapter hangs throwing above error.
Even after few runs of other files.
Is it something related to the security feature of the product which prohibits sending the contents of message if the same contents are send previously?
Actullay I had never faced such issue before & use to do the testing with same file itself.
oai_agent_error has following entry in internalid column:
MetadataManager_RepositoryConnectionErrorWithoutOID
When I kill the adapter, the same msg is picked up by the subcribing adadpeter(dbadapter) & puts the data into the table.
Tough I m fixing the above issue as below:
1- kill the FTP adapter
2- remove its entries in componentinfo table.
3-deleting all rows in oai_hub_queue.
4- stop other adapters.
5- Stopping & restarting the repository again.
Still not sure whether error throwing by adapter is expected functionality in iStudio, or something is missing in the setting done in my setup?
Regards.
Mohit