Connection pooling doubts

Question

To run my application, I make the war and deploy it in JBoss.
In Jboss, data source is configured having minimum connection pool size as 5.
I want to know couple of things
1) At what point the database connections are made and then pooled? Will they be made when the jboss starts or when i deploy my application war and start jboss or when first request comes in my application. 2) How can i get to know how many connections are being used at a given point of time?

Community · Accepted Answer · 2017-05-23 12:27:36Z

2

It's described in the documentation (bold mine):

<min-pool-size> - the minimum number of connections maintained in the pool. Unless <prefill> is true then the pool will remain empty until first use at which point the pool will be filled to the <min-pool-size>. When the pool size drops below the <min-pool-size> due to idle timeouts the pool will be refilled to the <min-pool-size>. Default is 0.

and:

<prefill> - whether to attempt to prefill the connection pool to the minimum number of connections.

For connection pool sizing check out: JBoss ManagedConnectionPool attributes.

edited May 23, 2017 at 12:27

CommunityBot

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answered Aug 30, 2012 at 13:20

Tomasz Nurkiewicz

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Pramod Kumar · Accepted Answer · 2012-08-30 13:21:39Z

1

At the time of Jboss start up your connection pool will be created

answered Aug 30, 2012 at 13:21

Pramod Kumar

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