2016. 04. 28. 21:22 keltezéssel, Ann Harrison aharri...@ibphoenix.com [firebird-support] írta: > Okay... What's the requirement that keeps you from using generators?
I need number generators which give back sequence numbers without skipping and repeating. But don't know how many needed. The number of needed generators depend on the customers(X Ltd., Y Ltd, ...). This is why I want to store the generators in a table. > Do you intend to grab the number in a transaction that does other work? The transaction do other work before grab the number and after grab the number. The whole thing is in a (one) stored procedure. (Works like a charm except deadlocks.) > What is the concurrency requirement? If I understand your question correctly... I don't think will be high load but I test is because not want to see deadlock in production. > What you're thinking about doing > will serialize the generation of identifiers and all other actions of > those transactions. I'm not totally convinced that using > ReadCommitted/wait will create an auditable series of numbers in the > case where a transaction fails. For testing purposes the test app insert the generated numbers into a one field table which have a unique constraint. I not see any error except the deadlocks. Gabor ------------------------------------ ------------------------------------ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Visit http://www.firebirdsql.org and click the Documentation item on the main (top) menu. Try FAQ and other links from the left-side menu there. Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/firebird-support/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/firebird-support/join (Yahoo! ID required) <*> To change settings via email: firebird-support-dig...@yahoogroups.com firebird-support-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: firebird-support-unsubscr...@yahoogroups.com <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
