[jboss-user] [Datasource Configuration] - Re: Data source transaction isolation level descriptions

[Wolf-Dieter Fink]

Wolf-Dieter Fink [https://community.jboss.org/people/wdfink] created the discussion

"Re: Data source transaction isolation level descriptions"

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Depends extreme on your requirements.
A description of the levels can be found at  http://en.wikipedia.org/wiki/Isolation_%28database_systems%29 wikipedia
I think the most common is READ_COMMITED. If you don't want to overwrite changes you should use optimistic locking.

SERIALIZABLE is the highest level and it will be slow down the access because there is no concurrent access.
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