When trying to access non existing vdb via ODBC driver, two exception stack traces are written into server console. One complains about non-existing vdb. The second is NullPointerException.
The first part of this problem is connected to TEIID-3574 . The other part - NullPointerException - is unique to this issue.

1. LogonException
   Unable to find source-code formatter for language: plain. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml

   11:01:14,919 ERROR [org.teiid.ODBC] (New I/O worker #7) TEIID40015 Unexpected error occurred: org.teiid.client.security.LogonException: TEIID40046 VDB "TextEmployeeCombined" version "latest" does not exist.
   	at org.teiid.services.SessionServiceImpl.getAuthenticationType(SessionServiceImpl.java:479) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.odbc.ODBCServerRemoteImpl.getAuthenticationType(ODBCServerRemoteImpl.java:219) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.odbc.ODBCServerRemoteImpl.initialize(ODBCServerRemoteImpl.java:197) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at sun.reflect.GeneratedMethodAccessor190.invoke(Unknown Source) [:1.7.0_75]
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_75]
   	at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_75]
   	at org.teiid.transport.ODBCClientInstance.processMessage(ODBCClientInstance.java:127) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.transport.ODBCClientInstance.receivedMessage(ODBCClientInstance.java:116) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.transport.SSLAwareChannelHandler.messageReceived(SSLAwareChannelHandler.java:211) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.jboss.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:88) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:328) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_75]
   	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_75]
   	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]
   Caused by: org.teiid.dqp.service.SessionServiceException: TEIID40046 VDB "TextEmployeeCombined" version "latest" does not exist.
   	at org.teiid.services.SessionServiceImpl.getActiveVDB(SessionServiceImpl.java:269) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.services.SessionServiceImpl.getAuthenticationType(SessionServiceImpl.java:477) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	... 30 more
   

2. NullPointerException
   Unable to find source-code formatter for language: plain. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml

   11:01:14,928 ERROR [org.teiid.ODBC] (New I/O worker #7) TEIID40015 Unexpected error occurred: java.lang.NullPointerException
   	at org.teiid.odbc.ODBCServerRemoteImpl.initialize(ODBCServerRemoteImpl.java:203) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at sun.reflect.GeneratedMethodAccessor190.invoke(Unknown Source) [:1.7.0_75]
   	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_75]
   	at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_75]
   	at org.teiid.transport.ODBCClientInstance.processMessage(ODBCClientInstance.java:127) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.transport.ODBCClientInstance.receivedMessage(ODBCClientInstance.java:116) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.teiid.transport.SSLAwareChannelHandler.messageReceived(SSLAwareChannelHandler.java:211) [teiid-runtime-8.7.1.6_2-redhat-3.jar:8.7.1.6_2-redhat-3]
   	at org.jboss.netty.channel.SimpleChannelHandler.handleUpstream(SimpleChannelHandler.java:88) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:328) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) [netty-3.6.10.Final-redhat-1.jar:3.6.10.Final-redhat-1]
   	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_75]
   	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_75]
   	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_75]