Which isloation level do you use in your DB? > -----Message d'origine----- > De : [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]De la part de Jon Swinth > Envoyé : vendredi, 22 novembre 2002 18:56 > À : [EMAIL PROTECTED] > Objet : [JBoss-user] Locking and Readonly Beans > > > We have been having some periodic issues with deadlock using > JBoss 3.0.3 and > CMP beans. In looking at the conflicts, we found that much of > the access to > the beans was just to read so we created readonly versions of the > beans for > those functions. This was done by making duplicate entries in > the XML files > with SomeBeanRO name and specifying the bean as readonly. The same class > files are used for the standard and readonly versions so there > isn't too much > added maintenance. Now that we have done this we are seeing > deadlocks within > the readonly bean access. No relationships are used so there > isn't an issue > there. First of all, wouldn't readonly beans not need an > exclusive lock and > therefore wouldn't be able to deadlock? Is it possible the locking is by > class rather than bean definition so this could be caused by the > regular bean > being locked? > > Between this and the fact that PostgreSQL takes a write lock > instead of a read > lock on foreign key tables, we are having some serious collisions > sometimes. > > > ------------------------------------------------------- > This sf.net email is sponsored by:ThinkGeek > Welcome to geek heaven. > http://thinkgeek.com/sf > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-user >
------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
