Hi, I found some weird repeating errors in my server.log including some SQL Exceptions. here are some excerpts: 2014-03-28 17:12:56,755 ERROR [org.jboss.as.ejb3.tx.CMTTxInterceptor] (pool-6-thread-48) javax.ejb.EJBTransactionRolledbackException: Could not get JDBC Connection; nested exception is java.sql.SQLException: jav ax.resource.ResourceException: IJ000460: Error checking for a transaction 2014-03-28 17:12:56,757 ERROR [org.jboss.ejb3.invocation] (pool-6-thread-48) JBAS014134: EJB Invocation failed on component Backend for method public abstract org.ovirt.engine.core.common.action.VdcReturnValueBa se org.ovirt.engine.core.bll.interfaces.BackendInternal.runInternalAction(org.ovirt.engine.core.common.action.VdcActionType,org.ovirt.engine.core.common.action.VdcActionParametersBase,org.ovirt.engine.core.bll.c ontext.CommandContext): javax.ejb.EJBTransactionRolledbackException: Could not get JDBC Connection; nested exception is java.sql.SQLException: javax.resource.ResourceException: IJ000460: Error checking for a tra nsaction at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleInCallerTx(CMTTxInterceptor.java:139) [jboss-as-ejb3-7.1.1.Final.jar:7.1.1.Final] 2014-03-27 13:55:29,022 WARN [org.jboss.resteasy.core.SynchronousDispatcher] (ajp--127.0.0.1-8702-4) Unknown exception while executing GET : java.lang.IllegalStateException: setAttribute: Session already invali dated at org.apache.catalina.session.StandardSession.setAttribute(StandardSession.java:1289) [jbossweb-7.0.13.Final.jar:] I got ldap/kerberos locally setup on the engine host. this is centos 6.5 the total numbers are way to high I guess: grep "ERROR" /var/log/ovirt-engine/server.log | wc -l 65734 I can provide complete logs if someone can debug this with me. -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen