Thank you, Dag. So, what may be my best strategy in the described situation? Let me recap a case like such:
Say Derby is running in in-memory subprotocol. There are two tables and three threads. Two threads perform inserts/deletes/updates and merges (implemented as update+insert) on each corresponding table. And the third thread runs an SQL on those two tables. I forgot to mention a few details: - the threads perform table updates in a batched way: Prepared statements are created and then they are batched. At a certain the batches are executed - the SQL is very slow running - for argument sake, it may take 3-4 mins to run it - much longer than a lock timeout. What would be the best way to assure proper functioning of the app and avoid timeouts? It has been suggested to repeat a transaction if a lock time out exception is caught, but that would mean to execute the whole batch again... Thank you for your help, Pavel. -----Original Message----- From: Dag H. Wanvik [mailto:[email protected]] Sent: Friday, June 01, 2012 7:30 PM To: Derby Discussion Subject: Re: Derby Locks - best practices Pavel Bortnovskiy <[email protected]> writes: > 1) What's the default length of lock timeouts? 60 seconds. cf. http://db.apache.org/derby/docs/10.8/ref/rrefproper46141.html Jefferies archives and monitors outgoing and incoming e-mail. The contents of this email, including any attachments, are confidential to the ordinary user of the email address to which it was addressed. If you are not the addressee of this email you may not copy, forward, disclose or otherwise use it or any part of it in any form whatsoever. This email may be produced at the request of regulators or in connection with civil litigation. Jefferies accepts no liability for any errors or omissions arising as a result of transmission. Use by other than intended recipients is prohibited. In the United Kingdom, Jefferies operates as Jefferies International Limited; registered in England: no. 1978621; registered office: Vintners Place, 68 Upper Thames Street, London EC4V 3BJ. Jefferies International Limited is authorised and regulated by the Financial Services Authority.
