Outofmemory error in hibernate persisten set -------------------------------------------- Key: HHH-4031 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4031 Project: Hibernate Core Issue Type: Bug Environment: Oracle 10. Reporter: Shripad Priority: Blocker I am getting outofmemory error in my java application. On analyzing heapdump of the application , I find that presistent set object of hibernate is consuming nearly 1 GB heapspace. Following are the mapping files I am using. EMSDataRecord class holds above mentioned set containing objects of EventRecords( Mapping file for this is pasted below EMSDataRecord). Primary key for EMSDataRecord is RECORD_ID. There is one to many relation in EMSDataRecord and EventRecord. I checked in the database. For one entry of EMSDataRecord , there are not more than 2 entries of EventRecords. So there is no reason why the set should be so huge. Is this a bug in hibernate? <?xml version="1.0"?<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" <hibernate-mapping <class name="EMSDataRecord" table="EM1_RECORD" dynamic-update="true" <id name="RecordId" type="java.lang.Long" column="RECORD_ID" <generator class="assigned" / </id <!-- Please do not change the order of the fields CR005-- <property name="StreamName" type="java.lang.String" column="STREAM_NAME" update="false" / <property name="OriginatingSystem" type="java.lang.String" column="ORIGINATING_SYSTEM" update="false" / <property name="DestinationSystem" type="java.lang.String" column="DESTINATION_SYSTEM" update="false" / <property name="LayoutName" type="java.lang.String" column="LAYOUT_NAME" update="false" / <property name="ErrorCode" type="java.lang.String" column="ERROR_CODE" update="false" / <property name="ErrorDesc" type="java.lang.String" column="ERROR_DESC" update="false" / <property name="ErrorTimestamp" type="java.util.Date" column="ERROR_TIMESTAMP" update="false" / <property name="EventTimestamp" type="java.util.Date" column="EVENT_TIMESTAMP" update="false" / <property name="ResolutionStatus" type="java.lang.Integer" column="RESOLUTION_STATUS" / <property name="ResolutionReason" type="java.lang.Integer" column="RESOLUTION_REASON" / <property name="RecordStatus" type="java.lang.Integer" column="RECORD_STATUS" / <property name="LockStatus" type="java.lang.Integer" column="LOCK_STATUS" / <property name="RejectionRemark" type="java.lang.String" column="REJECTION_REMARK" / <property name="AssignmentRuleId" column="ASSIGNMENT_RULE_ID" type="java.lang.Long" / <property name="CorrectionRuleId" column="CORRECTION_RULE_ID" type="java.lang.Long" / <property name="GroupId" type="java.lang.Long" column="GROUP_ID" / <property name="UserId" type="java.lang.Long" column="USER_ID" / <property name="TeamId" type="java.lang.Long" column="TEAM_ID" / <property name="RecordType" type="java.lang.Integer" column="RECORD_TYPE" / <!-- Performance Improvement - Save Without BLOB Change - Added additional attribute to make the attribute read only-- <property name="FieldsMap" type="binary" column="FIELD_MAP" update="false" / <property name="LastUpdTimeStamp" type="java.util.Date" column="LAST_UPD_TIMESTAMP" insert="false" / <set name="EventRecords" lazy="false" cascade="none" inverse = "true" where = "event_type=504" <key <column name="RECORD_ID" / </key <one-to-many class="EventRecord"/ </set</class</hibernate-mapping <?xml version="1.0"?<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" <hibernate-mapping <class name="EventRecord" table="EM1_EVENT" <id name="EventId" type="java.lang.Long" column="EVENT_ID" unsaved-value="any" <generator class="sequence" <param name="sequence">SEQ_EVENT_ID</param </generator </id <property name="RecordId" type="java.lang.Long" column="RECORD_ID" update="false" /> <property name="EventType" type="java.lang.Integer" column="EVENT_TYPE" update="false" / <property name="ChangedField" type="java.lang.String" column="CHANGED_FIELD" update="false" / <property name="OldValue" type="java.lang.String" column="OLD_VALUE" update="false" / <property name="NewValue" type="java.lang.String" column="NEW_VALUE" update="false" / <property name="ChangeTimestamp" type="java.util.Date" column="CHANGE_TIMESTAMP" update="false" insert="false" / <property name="UserId" type="java.lang.Long" column="USER_ID" update="false" /> <property name="ChangeReason" type="java.lang.Integer" column="CHANGE_REASON" update="false" /> </class</hibernate-mapping -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira