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POIs it a correct behaviour of transactions?
 

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    <p>I have three transaction services that are executed within a transaction boundary (stratTransaction or begin transaction). All three services uses different connection (No_Transaction, Local_Transaction and XA_Transaction) for their processing respectively. Now I want to know, when I start a transaction (using javax.transaction.TransactionManager) and run these three services within the transaction boundary, I can see that the service that used NO and LOCAL transactions are able to insert data into the tables. Now I am inserting data more than the table constraints in a column using the Service XA (and I know it is supposed to fail) and calling the commit (and a rollback procedure if there are any failures). Now I have data in tables of NO and Local connection tables while XA connection table don't have any data. Now:</p> <p><strong>I want to know that when the transaction has failed at one point it is suppossed to rollback all the data from all the tables or it is just supposed to rollback data of XA Service only?</strong></p> <p><strong>I also wanted to know: 'Transaction' as I know is a procedure of transferring data atomicly. So why connection creation includes defining the type of transaction that can be performed by connection isn't it a property of transactions?</strong></p> <p><strong>I also want to know that why we have to define transaction type in connection properties instead we must define the type of transaction when we start a transacion and that transaction manager must perform the given type of transactions.</strong></p> <p>Thanks in advance.</p>
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    1. COConnection may be optimized if you limit the best possible transaction isolation level. E.g. "no transaction" => updates are independent => updates can be batched or reordered on driver level. XA transactions require the connection object (in the app server) to interact with XA machinery, which is necessarily slower than a local transaction.
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