• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Liutauras Vilda
  • Tim Cooke
  • Jeanne Boyarsky
  • Paul Clapham
Sheriffs:
  • Devaka Cooray
  • Ron McLeod
  • paul wheaton
Saloon Keepers:
  • Tim Moores
  • Piet Souris
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
Bartenders:
  • Al Hobbs
  • Frits Walraven
  • Scott Selikoff

JDBCConnectionException: Cannot open connection

 
Ranch Hand
Posts: 247
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi

Sometimes my application is throwing JDBCConnectionException: Cannot open connection
I can't for the life of me work out why.

It is a web app running on tomcat and using hibernate.
I'm using a session filter that starts the transaction then processes the users action then closes the transaction.
So I don't think that connections are getting left open.

Do I have C3P0 configured properly?
<property name="hibernate.c3p0.acquire_increment">3</property>
<property name="hibernate.c3p0.idle_test_period">14400</property> <!-- seconds -->
<property name="hibernate.c3p0.timeout">25200</property> <!-- seconds -->
<property name="hibernate.c3p0.max_size">100</property>
<property name="hibernate.c3p0.min_size">10</property>
<property name="hibernate.c3p0.max_statements">0</property>


This is the game Mob Warrior if you're interested
 
I'm gonna teach you a lesson! Start by looking at this tiny ad:
the value of filler advertising in 2021
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic