[jbpm-users] [jBPM Users] - Row locks in Oracle after trying to delete a process instanc

Hi, We have row locks in our Oracle 11g jBPM database. I am still trying to figure out what action causes these locks. What I have seen so far is that there is a blocking session in our database which performs this SQL: DELETE FROM jbpm4_execution WHERE dbid_ = :1 AND dbversion_ = :2 It seems that this SQL statement hangs (no commit or rollback is ever done) causing other SQL statements (an update in this case) to block. I found the locked sessions using: | select INST_ID, SID, TYPE, ID1, ID2, LMODE, REQUEST, CTIME, BLOCK from gv$lock where (ID1,ID2,TYPE) in (select ID1,ID2,TYPE from gv$lock where request>0); | | INST_ID SID TYPE ID1 ID2 LMODE REQUEST CTIME BLOCK | 1 139 TX 65548 37132 6 0 8804 1 | 1 104 TX 65548 37132 0 6 7450 0 | When I look in our code I think the blocking database session must be our call to org.jbpm.api.ExecutionService#endProcessInstance. Does anyone have an idea why this could cause a lock? We use the default Oracle JDBC driver and our Hibernate settings are: | <hibernate-configuration> | <session-factory> | | <property name="hibernate.cache.provider_class">org.hibernate.cache.NoCacheProvider</property> | <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property> | <property name="hibernate.connection.datasource">java:/JbpmDS</property> | <property name="hibernate.format_sql">true</property> | | <mapping resource="jbpm.repository.hbm.xml" /> | <mapping resource="jbpm.execution.hbm.xml" /> | <mapping resource="jbpm.history.hbm.xml" /> | <mapping resource="jbpm.task.hbm.xml" /> | <mapping resource="jbpm.identity.hbm.xml" /> | | </session-factory> | </hibernate-configuration> | cheers, Edgar View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4260764#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...