[RFC] How about changing the default value of defaultRowFetchSize?

Hello,

Let me ask your opinion on whether the default value of defaultRowFetchSize can or should be changed. The current default value is 0, which means the driver fetches all rows at once when the result set is opened. I'd like to propose changing it to some small positive value because:

* It sometimes causes out-of-memory trouble when users' batch apps process many rows on the client side. They are often not aware of the fetch size, because they didn't experience the problem with the same app when using Oracle. Oracle's default fetch size is 10. They complained about the PostgreSQL's behavior. (OTOH, MySQL's JDBC driver fetches all rows by default like PostgreSQL.)

* If the performance is better when the fetch size is 0, then those who are keen to improve performance can find the method for tuning fetch size. I think it would be better to make the default setting more friendly for people who aren't so conscious of tuning.

Regards
Takayuki Tsunakawa