LDAP connector disconnects intermittently with error "TEIID12002"

We are using LDAP connector for virtualizing the ldap employee directory data. For some reason every 3 to 4 hours we get a connection error between JDV and LDAP.
The exception says it could not find the context name, but after restarting it it works again.

Here is the exception:

11:21:12,868 WARN [org.teiid.CONNECTOR] (Worker62_QueryProcessorQueue108177) Connector worker process failed for atomic-request=6S71mw5pkfvo.106.3.19906: org.teiid.translator.TranslatorException: TEIID12002 Failed to create LDAP search context from the specified context name ou=users,dc=redhat,dc=com. Check the table/group name in source to ensure the context exists.
at org.teiid.translator.ldap.LDAPSyncQueryExecution.createSearchContext(LDAPSyncQueryExecution.java:148) [translator-ldap-8.12.5.redhat-8.jar:8.12.5.redhat-8]
at org.teiid.translator.ldap.LDAPSyncQueryExecution.execute(LDAPSyncQueryExecution.java:130) [translator-ldap-8.12.5.redhat-8.jar:8.12.5.redhat-8]
at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.execute(ConnectorWorkItem.java:364)
at sun.reflect.GeneratedMethodAccessor184.invoke(Unknown Source) [:1.8.0-internal]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55) [rt.jar:1.8.0-internal]
at java.lang.reflect.Method.invoke(Method.java:508) [rt.jar:2.6 (07-19-2016)]
at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211)
at com.sun.proxy.$Proxy80.execute(Unknown Source)
at org.teiid.dqp.internal.process.DataTierTupleSource.getResults(DataTierTupleSource.java:306)
at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:112)
at org.teiid.dqp.internal.process.DataTierTupleSource$1.call(DataTierTupleSource.java:108)
at java.util.concurrent.FutureTask.run(FutureTask.java:277) [rt.jar:1.8.0-internal]
at org.teiid.dqp.internal.process.FutureWork.run(FutureWork.java:65)
at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:276)
at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1153) [rt.jar:1.8.0-internal]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [rt.jar:1.8.0-internal]
at java.lang.Thread.run(Thread.java:785) [vm.jar:1.8.0-internal]
Caused by: javax.naming.CommunicationException: connection closed [Root exception is java.io.IOException: connection closed]; remaining name 'ou=users,dc=redhat,dc=com'
at com.sun.jndi.ldap.LdapCtx.doSearch(LdapCtx.java:2014) [rt.jar:1.8.0-internal]
at com.sun.jndi.ldap.LdapCtx.doSearchOnce(LdapCtx.java:1945) [rt.jar:1.8.0-internal]
at com.sun.jndi.ldap.LdapCtx.c_lookup(LdapCtx.java:1039) [rt.jar:1.8.0-internal]
at com.sun.jndi.toolkit.ctx.ComponentContext.p_lookup(ComponentContext.java:554) [rt.jar:1.8.0-internal]
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.lookup(PartialCompositeContext.java:189) [rt.jar:1.8.0-internal]
at com.sun.jndi.toolkit.ctx.PartialCompositeContext.lookup(PartialCompositeContext.java:178) [rt.jar:1.8.0-internal]
at javax.naming.InitialContext.lookup(InitialContext.java:428) [rt.jar:1.8.0-internal]
at javax.naming.InitialContext.lookup(InitialContext.java:428) [rt.jar:1.8.0-internal]
at org.teiid.resource.adapter.ldap.LDAPConnectionImpl.lookup(LDAPConnectionImpl.java:193)
at org.teiid.translator.ldap.LDAPSyncQueryExecution.createSearchContext(LDAPSyncQueryExecution.java:146) [translator-ldap-8.12.5.redhat-8.jar:8.12.5.redhat-8]
... 18 more
Caused by: java.io.IOException: connection closed
at com.sun.jndi.ldap.LdapClient.ensureOpen(LdapClient.java:1604) [rt.jar:1.8.0-internal]
at com.sun.jndi.ldap.LdapClient.search(LdapClient.java:542) [rt.jar:1.8.0-internal]
at com.sun.jndi.ldap.LdapCtx.doSearch(LdapCtx.java:1997) [rt.jar:1.8.0-internal]
... 27 more

11:21:12,871 ERROR [org.teiid.CONNECTOR] (Worker63_QueryProcessorQueue108178) null: java.lang.NullPointerException
at org.teiid.translator.ldap.LDAPSyncQueryExecution.close(LDAPSyncQueryExecution.java:186) [translator-ldap-8.12.5.redhat-8.jar:8.12.5.redhat-8]
at org.teiid.dqp.internal.datamgr.ConnectorWorkItem.close(ConnectorWorkItem.java:255)
at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source) [:1.8.0-internal]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55) [rt.jar:1.8.0-internal]
at java.lang.reflect.Method.invoke(Method.java:508) [rt.jar:2.6 (07-19-2016)]
at org.teiid.dqp.internal.datamgr.ConnectorManager$1.invoke(ConnectorManager.java:211)
at com.sun.proxy.$Proxy80.close(Unknown Source)
at org.teiid.dqp.internal.process.DataTierTupleSource.fullyCloseSource(DataTierTupleSource.java:338)
at org.teiid.dqp.internal.process.DataTierTupleSource.exceptionOccurred(DataTierTupleSource.java:394)
at org.teiid.dqp.internal.process.DataTierTupleSource.nextTuple(DataTierTupleSource.java:161)
at org.teiid.query.processor.relational.AccessNode.nextBatchDirect(AccessNode.java:391)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:282)
at org.teiid.query.processor.relational.SelectNode.nextBatchDirect(SelectNode.java:104)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:282)
at org.teiid.query.processor.relational.ProjectNode.nextBatchDirect(ProjectNode.java:150)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:282)
at org.teiid.query.processor.relational.DupRemoveNode.nextBatchDirect(DupRemoveNode.java:62)
at org.teiid.query.processor.relational.RelationalNode.nextBatch(RelationalNode.java:282)
at org.teiid.query.processor.relational.RelationalPlan.nextBatch(RelationalPlan.java:145)
at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:151)
at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:114)
at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:164)
at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:146)
at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:472)
at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:348)
at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51)
at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:274)
at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:276)
at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1153) [rt.jar:1.8.0-internal]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [rt.jar:1.8.0-internal]
at java.lang.Thread.run(Thread.java:785) [vm.jar:1.8.0-internal]

11:21:12,874 DEBUG [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (Worker63_QueryProcessorQueue108178) LDAPSource: returnConnection(6306ef86, false) [1/20]
11:21:12,874 WARN [org.teiid.PROCESSOR] (Worker63_QueryProcessorQueue108178) TEIID30020 Processing exception for request 6S71mw5pkfvo.106 'TEIID30504 local: TEIID12002 Failed to create LDAP search context from the specified context name ou=users,dc=redhat,dc=com. Check the table/group name in source to ensure the context exists.'. Originally TeiidProcessingException 'connection closed' LdapClient.java:1604. Enable more detailed logging to see the entire stacktrace.
11:21:16,120 DEBUG [org.apache.catalina.session] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Start expire sessions StandardManager at 1474903276120 sessioncount 0