DBCP What does minIdle control?

["Wm.A.Stafford" <st...@marine.rutgers.edu>]

The description of the minIdle param on the DBCP javadoc page is 
confusing me.  The actual text is:

"The minimum number of active connections that can remain idle in the 
pool, without extra ones being created, or 0 to create none."

I'm confused by the reference to "active connections".  I think of 
"active" and "idle" as mutually exclusive states.  But this 
documentation seems to imply that a connection can be both or that there 
is some other class of  idle connection that was not at one time active.

Intuitively I would think minIdle is the cut off point for idle 
connections.  When this value is reached, i.e. numIdle=<minIdle, new 
connections must be obtained to push numIdle > minIdle.  But, in most 
cases, I would think these new connections would immediately be idle, 
not active.  They are just being created to push the number if idle 
connections above the cut off point.

Can anyone clarify this?

Thanks,
-=bill




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