Sorry I missed that piece of the docs I guess. Thanks again for your input!
Eddie ----- Original Message ----- From: "Jim Urban" <[EMAIL PROTECTED]> To: "Tomcat Users List" <[EMAIL PROTECTED]> Sent: Wednesday, March 06, 2002 9:57 AM Subject: RE: Who uses connection pool? > We have one servlet (our controller servlet) which we have tagged in our > web.xml as load on start up first. This servlet initializes the connection > pool. Our class which wraps the connection pool is a Singleton class which > has a public static member method to access the connection broker. This way > all servlets and classes within the context share a single copy of the > connection broker. > > As documented, the minimum number of connections is established when the > broker is initialized. The number of connections grows as needed. You will > notice a parameter "double maxConnTime". This is a portion of a 24 hour > day. That is 1.0 = 24 hours, 2.0 = 48 hours, .5 = 12 hours, .25 = 6 hours > etc. Every this number hours the connections are closed and the minimum > number of connections are re-established. This helps cut down on unused > open connections and replaces any connections which have been dropped for > whatever reason. This is may not be the most efficient way of managing > connections, but it doesn't use much overhead either. > > Over all we have been quite happy with DDConnectionBroker. It seems quite > reliable (sometimes simple is better) and the price is right! It also works > fine with the Oracle driver, MySQL driver and freetds (for MS SQL). > > Jim > > > -----Original Message----- > > From: Eddie Bush [mailto:[EMAIL PROTECTED]] > > Sent: Wednesday, March 06, 2002 9:25 AM > > To: Tomcat Users List > > Subject: Re: Who uses connection pool? > > > > > > Jim, I couldn't tell from the page - with you having some experience with > > the DDConnectionBroker, I thought I'd shoot you a couple of questions: > > > > Pool Instantiation > > Do I need to create this pool in an initialization servlet and put an > > instance of it in the servlet context? It looks like it's possible that > > using this 'pool' might result in a new pool for each servlet... > > which isn't > > really going to solve any problems for me. In practice, how have you > > noticed it to act? > > > > Connection Maintenance > > The site has this to say: > > > > In the future, the number of connections in the pool will vary from > > minConnections to maxConnections; minConnections will be available during > > slow times; maxConnections will be in the pool when busy. (This is not > > currently implemented.) > > > > What behavior have you observed? Does it just keep the increased > > number of > > connections? That doesn't sound very good either. > > > > Thanks so much! > > > > Eddie > > > > ----- Original Message ----- > > From: "Jim Urban" <[EMAIL PROTECTED]> > > To: "Tomcat Users List" <[EMAIL PROTECTED]> > > Sent: Tuesday, March 05, 2002 3:31 PM > > Subject: RE: Who uses connection pool? > > > > > > > We use DBConnectionBroker regardless of the database. This way the its > > > easier to switch databases depending on which one a client chooses. > > > > > > Jim > > > > > > > -----Original Message----- > > > > From: Rich Sneiderman [mailto:[EMAIL PROTECTED]] > > > > Sent: Tuesday, March 05, 2002 1:27 PM > > > > To: Tomcat Users List > > > > Subject: RE: Who uses connection pool? > > > > > > > > > > > > Hi folks, > > > > > > > > Ok, I know we've beaten this to death today but all this discussion > > > > about DB Pooling got me thinking... > > > > > > > > Currently I'm using the Oracle thin client JDBC driver > > (class12.jar) to > > > > talk to a 9i database. I'm currently using the connection > > > > pooling/caching support Oracle supplies (the OracleConnectionCacheImpl > > > > class). Have any of you used this? How would you contrast it to say > > > > poolman, Bitmechanic's pool code, or DBConnectionBroker (I > > think that's > > > > all the ones that have been thrown around today)? Would one > > of these be > > > > a better choice? Based on today's discussion I won't even consider > > > > Tomcat's native pooling (tyrex). > > > > > > > > I'm still in development with my code and haven't put it under load so > > > > it would be nice to know if this is a good route to take before we get > > > > into production. > > > > > > > > Thanks in advance. > > > > > > > > - Rich > > > > > > > > -- > > > > To unsubscribe: <mailto:[EMAIL PROTECTED]> > > > > For additional commands: <mailto:[EMAIL PROTECTED]> > > > > Troubles with the list: <mailto:[EMAIL PROTECTED]> > > > > > > > > > > > > > > > > > -- > > > To unsubscribe: <mailto:[EMAIL PROTECTED]> > > > For additional commands: <mailto:[EMAIL PROTECTED]> > > > Troubles with the list: <mailto:[EMAIL PROTECTED]> > > > > > > > > > -- > > To unsubscribe: <mailto:[EMAIL PROTECTED]> > > For additional commands: <mailto:[EMAIL PROTECTED]> > > Troubles with the list: <mailto:[EMAIL PROTECTED]> > > > > > > > -- > To unsubscribe: <mailto:[EMAIL PROTECTED]> > For additional commands: <mailto:[EMAIL PROTECTED]> > Troubles with the list: <mailto:[EMAIL PROTECTED]> > -- To unsubscribe: <mailto:[EMAIL PROTECTED]> For additional commands: <mailto:[EMAIL PROTECTED]> Troubles with the list: <mailto:[EMAIL PROTECTED]>
