Better concurrency in Oracle than SQL Server?

Question

Is it true that better concurrency can be achieved in Oracle databases than in MS SQL Server databases? In particular in an OLTP scenario, such as an ERP system?

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Answer 1

Sql Server has row locking, several different transaction isolation levels, and a transaction log that can be replayed.

Maybe he's referring to Access, which does not have these.

Or maybe he believes Oracle uses better defaults. He might have a better argument there, but with either DBMS if you're talking ERP you better have a DBA who knows enough about the system to keep it tuned properly.