[ https://issues.jboss.org/browse/WFLY-6412?page=com.atlassian.jira.plugin.... ] Wolf-Dieter Fink commented on WFLY-6412: ---------------------------------------- The same happen for any other database Here Postgres Stacktrace: Caused by: org.postgresql.util.PSQLException: ERROR: could not serialize access due to concurrent update at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2455) at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2155) at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:288) at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:430) at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:356) at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:168) at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:135) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.postgresql.ds.PGPooledConnection$StatementHandler.invoke(PGPooledConnection.java:423) at com.sun.proxy.$Proxy10.executeUpdate(Unknown Source) at org.jboss.jca.adapters.jdbc.WrappedPreparedStatement.executeUpdate(WrappedPreparedStatement.java:537) at org.jboss.as.ejb3.timerservice.persistence.database.DatabaseTimerPersistence.shouldRun(DatabaseTimerPersistence.java:410) -- This message was sent by Atlassian JIRA (v7.2.3#72005)