Hi Faisal, 

Your application(s) run as expected for a while, then you get the SQL 
Connection error? Then the only way to “fix it” is to restart Tomcat? At the 
same time are you also restarting MySQL? 

Thanks,
Ted

> On Feb 18, 2019, at 02:17, Luis Rodríguez Fernández <uo67...@gmail.com> wrote:
> 
> Hello Faisal,
> 
> It looks like your problem is more related with your hikari connection pool
> than with tomcat itself. I would recommend you to double check your hikari
> configuration properties. Pay specially attention on how you are
> configuring your connection pool (minimum and maximum size, timeout,
> etc...) It looks like there is "something" in your application that
> prevents to get connections from your pool.
> 
> Hope it helps,
> 
> Luis
> 
> 
> 
> 
> 
> 
>> El lun., 18 feb. 2019 a las 6:33, <fai...@bestercapitalmedia.com> escribió:
>> 
>> Dear all,
>> 
>> 
>> 
>> I am working on a project and I am facing following issue on almost every
>> second day. I need to restart tomcat to get it running again.
>> 
>> Can someone guide me on it. Ask if you need some other insight to look into
>> it.
>> 
>> 
>> 
>> 2019-02-18 04:49:35.572  WARN 20698 --- [io-4200-exec-15]
>> o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 0, SQLState: null
>> 
>> 2019-02-18 04:49:35.572 ERROR 20698 --- [io-4200-exec-15]
>> o.h.engine.jdbc.spi.SqlExceptionHelper   : HikariPool-1 - Connection is not
>> available, request timed out after 30000ms.
>> 
>> 2019-02-18 04:49:35.573  WARN 20698 --- [io-4200-exec-15]
>> o.s.s.o.provider.endpoint.TokenEndpoint  : Handling error:
>> InternalAuthenticationServiceException, Unable to acquire JDBC Connection;
>> nested exception is org.hibernate.exception.JDBCConnectionException: Unable
>> to acquire JDBC Connection
>> 
>> 
>> 
>> Server is Ubuntu (aws)
>> 
>> Database is mySql
>> 
>> java version "1.8.0_181"
>> 
>> Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
>> 
>> Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
>> 
>> 
>> 
>> Best Regards | Bien Cordialement | تحياتي
>> 
>> Faisal Zaidi
>> Application Architect
>> 
>> 
>> 
>> 
> 
> -- 
> 
> "Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better."
> 
> - Samuel Beckett

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org

Reply via email to