Locking/Commit Option

[guldimann]

when not defining a commit option in jboss.xml I understand that commit option A is used as default.
when I manipulate an entity bean in a session bean(means a record in rdbms) does commit option A mean that only this instance of the session bean can manipulate the state of the entity bean an no one else at the same time?

[davidjencks]

No, that depends on the locking behavior of your database/sql combination. The commit options only tell entity beans how often to read their data from the db (+ some cache timing for B,C)