Kevin Wilson wrote:

Dan,

So in reference to your comment below, just how bad of an impact are we
talking here?

It adds a lot of I/O because every commit writes to disk. And connections are synchronizing on the log writer. Think about a chain gang.


And if it is really bad then why would that be the default
mode? (something to do with the jdbc spec I suppose)

ODBC actually. I blame it on Microsoft, as their desktop databases didn't knew about transactions, so they were autocommit only. But as ODBC was derived from a SQL Access Group specification, maybe the origins of this default are somewhere else.


Daniel Dittmar

--
Daniel Dittmar
SAP DB, SAP Labs Berlin
[EMAIL PROTECTED]
http://www.sapdb.org



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