I noticed that with Alfresco 3.1 i can configure the support for Transaction Isolation on MS SQL Server, with the parameter:
db.txn.isolation=4096
It's possible to use Transaction Isolation on Alfresco 2.1? I'm not MS SQL Server savy, just need to improve the stability for the next couple of weeks until the new server arrive and i can migrate to Alfresco 3.4 with MySQL on Linux.
In general you can't fiddle with the isolation levels, the default values will have been set for a good reason. While there may be odd use-cases, such is if you have a read only repo, or a write only repo, don't touch unless you are an expert user, and you are doing something strange.