Hi I've run into some problems with hibernate 2nd level cache. As cache provider I use ehcache.
Part of config from persistence.xml
<property name="hibernate.cache.use_second_level_cache" value="true"/>
<property name="hibernate.cache.provider_class" value="net.sf.ehcache.hibernate.EhCacheProvider" />
<property name="hibernate.cache.provider_configuration_file_resource_path" value="/ehcache.xml" />
I configure my entities using annotations so:
@Cache(region = "Kierunek", usage = CacheConcurrencyStrategy.READ_WRITE) public class Kierunek implements Serializable {
imports for those annotations are:
import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy;
my ehcache.xml
<diskStore path="java.io.tmpdir" />
<defaultCache maxElementsInMemory="10000" eternal="false"
timeToIdleSeconds="120" timeToLiveSeconds="120" overflowToDisk="true"
diskSpoolBufferSizeMB="30" maxElementsOnDisk="10000000"
diskPersistent="false" diskExpiryThreadIntervalSeconds="120"
memoryStoreEvictionPolicy="LRU" />
<cache name="Kierunek" maxElementsInMemory="1000"
eternal="true" overflowToDisk="false" memoryStoreEvictionPolicy="LRU" />
And anyone idea why i get following error ?
WARNING: Could not find a specific ehcache configuration for cache named [persistence.unit:unitName=pz2EAR.ear/pz2EJB.jar#pz2EJB.Kierunek]; using defaults. 19:52:57,313 ERROR [AbstractKernelController] Error installing to Start: name=persistence.unit:unitName=pz2EAR.ear/pz2EJB.jar#pz2EJB state=Create java.lang.IllegalArgumentException: Cache name cannot contain '/' characters.
solution is to add another property to persistence.xml <property name="hibernate.cache.region_prefix" value=""/> and that removes that faulty prefix big thx ruslan!