Hello, I use Oracle and when I try to set isolation level of data source to TRANSACTION_REPEATABLE_READ I got exception that READ_COMMITTED and SERIALIZABLE are the only allowed isolation levels. When I try to set isolation level of data source to TRANSACTION_SERIALIZABLE it works, but I receive a lot of exceptions from jBPM when using multithreaded JobExecutor that the running transactions are not able to serialize. Is READ_COMMITTED sufficient isolation level for Oracle? Regards Pavel View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4158730#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...