Обсуждение: pg73jdbc3.jar and Connection Pool properties
Hi all, I 'm working on a server linux with installed postgresql version 7.2.1. For my Java code I used (till now) pgjdbc2.jar: everything was ok. Now I need to use Connection Pool and so I downloaded pg73jdbc3.jar (pgjdbc2.jar doesn't contain Connection Pool classes). Can I use pg73jdbc3.jar for postgresql 7.2.1 without any problem ? (I did a little test and it seems to be ok) ------------------ Another question. Connection Pooling is required by Sun One Application Server (I'm facing with an EJB based application). I didn't find clear examples about Connection Pool's properties that I have to indicate to the Application Server. I tried with: Datasource Classname: org.postgresql.jdbc3.PoolingDataSource serverName: localhost user: <my user> password: <my password> database Name: <my db name> but it doesn't work :-( Can anybody help me ? Many thanks in advance, Moreno
On 06/10/2003 08:51 Moreno Mauri wrote: > Hi all, > I 'm working on a server linux with installed postgresql version 7.2.1. > For my Java code I used (till now) pgjdbc2.jar: everything was ok. > > Now I need to use Connection Pool and so I downloaded > pg73jdbc3.jar (pgjdbc2.jar doesn't contain Connection Pool > classes). The Connection pool should be provided by the application container. > > Can I use pg73jdbc3.jar for postgresql 7.2.1 without any problem ? > (I did a little test and it seems to be ok) It will work fine. > > ------------------ > > Another question. > Connection Pooling is required by Sun One Application Server > (I'm facing with an EJB based application). > I didn't find clear examples about Connection Pool's properties that I > have > to indicate to the Application Server. > I tried with: > > Datasource Classname: org.postgresql.jdbc3.PoolingDataSource > serverName: localhost > user: <my user> > password: <my password> > database Name: <my db name> > > but it doesn't work :-( > > Can anybody help me ? There's no such class or interface as org.postgresql.jdbc3.PoolingDataSource. Have you tried org.postgresql.Driver? -- Paul Thomas +------------------------------+---------------------------------------------+ | Thomas Micro Systems Limited | Software Solutions for the Smaller Business | | Computer Consultants | http://www.thomas-micro-systems-ltd.co.uk | +------------------------------+---------------------------------------------+
Hi Paul, > There's no such class or interface as > org.postgresql.jdbc3.PoolingDataSource. Have you tried > org.postgresql.Driver? The first time I tried with org.postgresql.Driver and it didn't work. Then I used org.postgresql.jdcb2.optional.PoolingDataSource and it was the same. The last attempt was org.postgresql.jdbc3.PoolingDataSource but nothing changed :-( Perhaps I need to create a Persistence Manager in my App.Server's instance if I need to use Entity Beans ? Thanks Moreno
On 06/10/2003 13:21 Moreno Mauri wrote: > Hi Paul, > > > There's no such class or interface as > > org.postgresql.jdbc3.PoolingDataSource. Have you tried > > org.postgresql.Driver? > > The first time I tried with org.postgresql.Driver and it didn't work. > > Then I used org.postgresql.jdcb2.optional.PoolingDataSource and it was > the same. > > The last attempt was org.postgresql.jdbc3.PoolingDataSource but nothing > changed > :-( Without knowing what your app server needs, have you tried either org.postgresql.jdcb2.optional.ConnectionPool or org.postgresql.jdcb3.Jdbc3ConnectionPool? > > Perhaps I need to create a Persistence Manager in my App.Server's > instance if I > need > to use Entity Beans ? I've never used your particular app server so I've no idea. I found this in the archives: http://archives.postgresql.org/pgsql-jdbc/2003-03/msg00031.php HTH -- Paul Thomas +------------------------------+---------------------------------------------+ | Thomas Micro Systems Limited | Software Solutions for the Smaller Business | | Computer Consultants | http://www.thomas-micro-systems-ltd.co.uk | +------------------------------+---------------------------------------------+
>Without knowing what your app server needs, have you tried either org.postgresql.jdcb2.optional.ConnectionPool or org.postgresql.jdcb3.Jdbc3ConnectionPool? I read (I don't remember in which of the various forum I found the suggest) that in Connection Pool's properties for Sun One Application Server I have to indicate not org.postgresql.Driver but directly the class org.postgresql.jdcb3.Jdbc3ConnectionPool (or the jdbc2.optional class ... I think it depends from which version of jdbc, 2 or 3, you are using). Now everything runs: I was wrong when I set the resource references for my entity beans (I had to indicate the JNDI name for the persistence manager). >I've never used your particular app server so I've no idea. I found this in the archives: http://archives.postgresql.org/pgsql-jdbc/2003-03/msg00031.php Thanks Paul, I'll have it a look ! Moreno