Hi Walter,
I don't think I've ever heard of any connection pooling library able to
limit the total amount
of connections across several pools.
A Google search for "limit number of jdbc connections across multiple
connection pools" also comes out empty as far as I can tell.

If in your use case there is a correspondence between a GeoServer user and
a database user, maybe you can use
a single connection pool, and impersonation to change the current user:
http://docs.geoserver.org/latest/en/user/data/database/sqlsession.html#data-sqlsession

Just thinking out loud here :-)

Cheers
Andrea


On Mon, Jun 13, 2016 at 3:45 PM, Walter Stovall <[email protected]>
wrote:

> Thanks but I don't yet see how this would solve my problem?  When I look
> at the tutorial it shows setting up a tomcat pool that connects to oracle
> under a specific user name and password.
>
> But in my case I want to limit the number of connections to the Oracle
> instance itself independent of the user id and password.  For example let's
> say I have 100 geoserver workspaces, each of which manage a pool of
> connections to a specific Oracle schema (with all such schemas in one
> oracle instance).  Each such pool would login to Oracle under a different
> user and password.  I might want each pool to have as many as 50 active
> connections, and yet I want to see that regardless, no more than 200 total
> connections (in all the pools combined) will be created.
>
> In the above scenario of 100 workspaces with 50 connections each you might
> normally see as many as 5,000 connections.  I'm looking for something that
> will see that regardless, the total connections are kept below a limit of
> say 200.  So three particular pools might create 50 connections and if a
> 4th pool tries to create a new connection (to this specific oracle instance
> regardless of schema) that connection will block waiting for the limit to
> go below 200.
>
> Does JNDI create a way of doing that?
>
> Thanks, Walter
>
> -----Original Message-----
> From: Rob L [mailto:[email protected]]
> Sent: Monday, June 13, 2016 8:45 AM
> To: [email protected]
> Subject: Re: [Geoserver-users] Can geoserver 2.8 manage number of database
> connections to a given Oracle instance?
>
> Walter,
>
> Have a look at using a JNDI connection.
>
>
> http://docs.geoserver.org/maintain/en/user/tutorials/tomcat-jndi/tomcat-jndi.html#tomcat-jndi
> <
> http://docs.geoserver.org/maintain/en/user/tutorials/tomcat-jndi/tomcat-jndi.html#tomcat-jndi
> >
>
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/Can-geoserver-2-8-manage-number-of-database-connections-to-a-given-Oracle-instance-tp5271268p5271381.html
> Sent from the GeoServer - User mailing list archive at Nabble.com.
>
>
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