CMP isolation level  Soft locking

Chapter 5: New Features in EAServer Versions 4.2.3, 4.2.2, 4.2.1, and 4.2

Table-level timestamps

Beginning in version 4.1.3, you can configure table-level timestamp for CMP entity beans that use OCC. EAServer maintains the table-level timestamp as a single integer counter, incrementing the count for every update, insert, or delete in the main table. The conventional model for optimistic concurrency uses row-level timestamps. For more information, see “Concurrency control options” in Chapter 4, “EJB CMP Tuning,” in the EAServer Performance and Tuning Guide.





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