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Struts & Hibernate
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| | | - OracleThinPersistenceManager instabili | - OracleThinPersistenceManager instabili 2007-08-10 - By barnaby33
Back
When testing a normal failure mode using oracle thin persistence manager I get
an exception when trying to add new messages. The sequence goes like this
1) Add 2 messages to the queue. ( On checking the jms_messages table there
appears to be 4 messages being written. I assume it has something to with the
blob workaround but not sure.)
2) Make sure MDB cannot deliver messages.
3) Turn off server without exiting JBoss. (This seems to be a very normal
failure condition to me)
4)Turn on Jboss server. (During startup JMS system barfs on the two records
with null blobs. I worked around this by modifying the select query to only
return messages with non-null blobs.)
5)Add more messages. This causes a SQL exception because each time you restart
the server, the messageid is reset to zero. (I looked through the code to find
that little nugget.)
So I'd like to sub-class the oraclethinpersistence manager and goto the jms
_messages table to find out what its highest messageId is, then increment it by
one and use this as the messageid for the new message. I wrote a class that
does just that but when I startup jboss I get an exception along the lines of
major and minor version are incorrect. Is there something preventing me
administratively, say an xml config option, that I need to change? Whats are
some other alternatives to my situation?
Josh
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