Re: Right version of jdbc

Sorry. I accidentally usin postgres 16, which was empty
Many thanks for advise !!!

Raivo

On Sat, Sep 30, 2023 at 8:18 AM Raivo Rebane <raivore55(at)gmail(dot)com> wrote:

> May be I have to copy PostGis draiver also to tomcat/lib ?
>
> Raivo
>
> On Sat, Sep 30, 2023 at 8:01 AM Raivo Rebane <raivore55(at)gmail(dot)com> wrote:
>
>> Hi,
>> I copied the postgres driver to Tomcat/lib.
>> PS C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib> dir post*
>> Directory: C:\Program Files\Apache Software Foundation\Tomcat 9.0\lib
>> Mode LastWriteTime Length Name
>> ---- ------------- ------ ----
>> -a---- 28.09.2023 14:40 1081604 postgresql-42.6.0.jar
>> but Tomcat remains to give error -
>> java.sql.SQLException: No suitable driver found for
>> jdbc:postgresql://localhost:5432/mushroom_database
>> I am using Postgres 15. May be I have to use more older one ?
>>
>>
>> Raivo
>>
>> On Sat, Sep 30, 2023 at 6:32 AM Craig McIlwee <craigm(at)vt(dot)edu> wrote:
>>
>>> > for some reason the postgresql jar is not in the classpath.
>>>
>>> This is due to the way that Tomcat loads drivers, which is documented at
>>> [1]. In short, the JDBC driver should be placed in the tomcat/lib
>>> directory and removed from the application's WEB-INF/lib directory. After
>>> doing that, I was able to get past the "No suitable driver" exception.
>>>
>>> OP, you should read that entire page, and in particular the portion at
>>> [2]. By registering a "Resource" with Tomcat, you can let it manage a
>>> connection pool for you (if you aren't already using something like
>>> PgBouncer or pgpool) and, if registered at the container level, in the
>>> future you can share that pool across all of your web applications in the
>>> container.
>>>
>>> [1]
>>> https://tomcat.apache.org/tomcat-9.0-doc/jndi-datasource-examples-howto.html#DriverManager,_the_service_provider_mechanism_and_memory_leaks
>>> [2]
>>> https://tomcat.apache.org/tomcat-9.0-doc/jndi-datasource-examples-howto.html#PostgreSQL
>>>
>>> Craig
>>>
>>>>