could not instantiate CacheProvider

hauboon · **Posted:** Thu Dec 25, 2003 11:31 pm

Hi,

I am using Tomcat 4.12, hibernate 2.1 and mysql database

During startup the tomcat server. Found the error as below:

could not instantiate CacheProvider: net.sf.ehcache.hibernate.Provider

Do u have any idea?

regards,
hauboon

timvogel · **Posted:** Fri Dec 26, 2003 12:52 pm

hauboon,
Not sure if this will help but ...
It appears that if no cache property is defined Hibernate uses ehcache. My problem was I had defined a cache and it kept looking for ehcache. The real problem was a space inside the double quotes (see below).

Code:

<!-- Wrong -->
      <property name="hibernate.cache.provider_class ">net.sf.hibernate.cache.HashtableCacheProvider</property>
<!-- Right -->
      <property name="hibernate.cache.provider_class">net.sf.hibernate.cache.HashtableCacheProvider</property>

The other option is to download ehcache at http://ehcache.sourceforge.net/
Timothy Vogel

michael · **Posted:** Fri Dec 26, 2003 2:07 pm

Either put ehcache.jar in your classpath or specify another cache provider

michael · **Posted:** Fri Dec 26, 2003 2:11 pm

This comes up really often lately - I took the freedom to add this to the FAQ

emmanuel · **Posted:** Mon Dec 29, 2003 6:41 am

gloeglm wrote:

This comes up really often lately - I took the freedom to add this to the FAQ

That's the purpose of the FAQ from the forum, feel free.