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CWNEN0030E error on DataSource JNDI lookup in Websphere Liberty

I am try to convert a WAS traditional 8.5 websphere configuration to a websphere liberty 20.x configuration and getting an error. I believe the connection settings are right, the names are correct, the jar file for the driver exists but getting the error below.
Here is essentially the configuration.
<dataSource jndiName="jdbc/db2a" type="javax.sql.DataSource">
<jdbcDriver javax.sql.DataSource="com.ibm.db2.jcc.DB2Driver" libraryRef="DB2JCCLib"/>
<properties.db2.jcc driverType="4" databaseName="DB1" serverName="host.name" portNumber="446"/>
</dataSource>
<web-bnd
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://websphere.ibm.com/xml/ns/javaee"
xsi:schemaLocation="http://websphere.ibm.com/xml/ns/javaee http://websphere.ibm.com/xml/ns/javaee/ibm-web-bnd_1_0.xsd" version="1.0">
<virtual-host name="default_host"/>
<resource-ref name="jdbc/db2a" binding-name="jdbc/db2a"/>
</web-bnd>
...
Configuration at top of server.xml
<!-- Enable features -->
<featureManager>
<feature>appSecurity-2.0</feature>
<feature>jaxrs-2.0</feature>
<feature>jsp-2.3</feature>
<feature>localConnector-1.0</feature>
<feature>jaxws-2.2</feature>
<feature>ldapRegistry-3.0</feature>
</featureManager>
The jar file is : db2jcc4-4.22.29.jar
And has as reference to that jar / class file.
The java code for the connection is standard jdbc connection:
DriverManager.getConnection (connStr);
And this:
InitialContext initialContext = new InitialContext();
Context context = (Context)initialContext.lookup("java:comp/env");
DataSource dataSource = (DataSource)context.lookup(string5);
logger.info((Object)"CVDBBackendHandler.getConnection() out");
return dataSource.getConnection();
The error is below.
Root exception is com.ibm.wsspi.injectionengine.InjectionException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/jdbc/db2a reference. The exception message was: CWNEN1003E: The server was unable to find the jdbc/db2a binding with the java.lang.Object type for the java:comp/env/jdbc/db2a reference.

You need to add one of the JDBC features to your feature list, e.g.
<featureManager>
<feature>jdbc-4.3</feature>
</featureManager>
(or one of the earlier JDBC features, e.g.jdbc-4.2, etc.).
Though your messages.log should show a feature set like this (including features pulled in from the features you explicitly enabled):
CWWKF0012I: The server installed the following features: [appSecurity-2.0, distributedMap-1.0, el-3.0, federatedRegistry-1.0, jaxb-2.2, jaxrs-2.0, jaxrsClient-2.0, jaxws-2.2, jndi-1.0, json-1.0, jsp-2.3, ldapRegistry-3.0, localConnector-1.0, servlet-3.1, ssl-1.0].
this list doesn't include any activating the JDBC feature, so you must explicitly enable it. (On the other hand, note the jndi-1.0 feature required to do JNDI lookups is included even though it wasn't one you added directly to server.xml, since one of the other features included it).
Some helpful links for reference:
https://openliberty.io/docs/latest/reference/feature/jdbc-4.3.html
https://openliberty.io/docs/latest/relational-database-connections-JDBC.html

There is an error in the configuration. com.ibm.db2.jcc.DB2Driver is not an implementation of javax.sql.DataSource.
You can remove the configuration attribute javax.sql.DataSource="com.ibm.db2.jcc.DB2Driver" and let the built-in knowledge in Liberty infer it from the JDBC driver jar, or you can specify it as,
javax.sql.DataSource="com.ibm.db2.jcc.DB2DataSource"
The above data source class name can be found in DB2 documentation here

Spring Boot JNDI CommonJ resource

Trying to get WorkManagers working with CommonJ in a Spring Boot app, hosted in TomEE.
Currently have the following configuration:
Tomcat context.xml
<Context>
<Resource name="myWorkManager"
auth="Container"
type="commonj.work.WorkManager"
factory="de.myfoo.commonj.work.FooWorkManagerFactory"
maxThreads="5" />
<ResourceLink
name="myWorkManager"
global="myWorkManager"
type="commonj.work.WorkManager" />
</Context>
Spring app web.xml
<resource-ref>
<res-ref-name>myWorkManager</res-ref-name>
<res-type>commonj.work.WorkManager</res-type>
<res-auth>Container</res-auth>
</resource-ref>
This is currently throwing the following exception when the app loads:
Caused by: org.springframework.jndi.TypeMismatchNamingException: Object of type [class de.myfoo.commonj.work.FooWorkManager] available at JNDI location [java:comp/env/myWorkManager] is not assignable to [commonj.work.WorkManager]
at org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:182)
at org.springframework.jndi.JndiLocatorSupport.lookup(JndiLocatorSupport.java:95)
at org.springframework.scheduling.commonj.WorkManagerTaskExecutor.afterPropertiesSet(WorkManagerTaskExecutor.java:110)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
... 53 more
I have the CommonJ jars downloaded from http://commonj.myfoo.de/install.shtml in my Tomcat lib directory.
I feel like I'm getting pretty close but slightly puzzled by this exception.
Any help would be much appreciated.
UPDATE
If I remove the two CommonJ jars from TomEE lib folder, I get this exception
Caused by: java.lang.ClassNotFoundException: commonj.work.WorkManager
Which is what I would expect.
If I remove the factory property from the resource element I get:
Caused by: org.springframework.jndi.TypeMismatchNamingException:
Object of type [class org.apache.openejb.core.ivm.naming.IvmContext]
available at JNDI location [java:comp/env/wm/default] is not
assignable to [commonj.work.WorkManager]

Im encounter with same issue, when try to start my app locally in maven-jetty-plugin. M. Deinum comment was very helpful. This error happens if you have lib jar in shared lib of your Application Server and in your WEB-INF/lib folder of web application, because server use one jar to create resource (parent classloader), but application use self jar(child classloader) and it two different classes hierarchy, so FooWorkManager cant be cast to WorkManager.

JNDI NameNotFoundException after Tomcat 8 upgrade

I upgraded from Tomcat 8.0.18 to 8.0.23 and all of the sudden I have a JNDI issue. I looked at the changelogs, Tomcat 8 Changelogs, and I see three JNDI changes, though none strike me as something that would break a previously working configuration.
JNDI related changes were made for bugs 49785, 57587, and an entry under 8.0.19 under "Other".
I am receiving this exception when I start up Tomcat with 8.0.23:
javax.naming.NameNotFoundException: Name [jdbc/MyCluster] is not bound in this Context. Unable to find [jdbc].
In my web application I have a resource link defined:
<Context>
<ResourceLink name="jdbc/MyCluster" global="jdbc/MyCluster" auth="Container" type="javax.sql.DataSource" />
</Context>
I have Tomcat configured with:
<Resource name="jdbc/MyCluster" global="jdbc/MyCluster" ......./>
I am stumped... I cannot figure out what makes my code break after my upgrade from 18 to 23 :(

Just in case anyone was curious about how upgrading from Tomcat 8.0.18 to 8.0.24 could really cause JNDI to screw up, the answer lies in ANT.
ANT Copy documentation
Myself and some other engineers had no idea that ANT Copy does nothing if the file you are trying to overwrite has a newer timestamp... who knew copy had such a complicated condition!?! I believe this is why me and multiple people never looked at the documentation, it is such an unexpected behavior.
Anyways, by upgrading to the newer version of Tomcat my context.xml that contained the resourcelink jdbc/MyCluster was failing to overwrite the newer and more recent timestamp of Tomcat's default context.xml! Once the overwrite flag is set to true, JNDI works again :)

How to set a java:comp/env/foo JNDI variable in Glassfish 4.1?

I'd like to use a ServletFilter that reads it configuration from the java:comp/env/ JNDI namespace. As the value will be different on devel and production servers, it should not be hardcoded via in web.xml but instead be configured in the application server.
I already tried the following places but none seemed to be right:
System Properties
Web Container / General Properties
JVM Settings / Additional Properties (suggested in How to set an env variable in Glassfish 2.1)
Resource Connectors (didn't work)
asenv.conf (only in Glassfish 2?)
How can I set a custom JNDI variable in Glassfish 4.1?

I installed only the Glassfish 4.1 Web Edition. While it has JNDI support, the web GUI comlpetely lacked the Resources -> JNDI menu to configure own variables!
In the Web Profile Glassfish, custom JNDI variables can be written in the domain.xml, they seem to survive other changes via the Admin GUI:
<resources>
...
<custom-resource res-type="java.lang.String" jndi-name="cas/serverName" factory-class="org.glassfish.resources.custom.factory.PrimitivesAndStringFactory">
<property name="value" value="https://sso.example.com/"></property>
</custom-resource>
</resources>
...
<servers>
<server name="server" config-ref="server-config">
...
<resource-ref ref="cas/serverName"></resource-ref>
</server>
</servers>
After adding a JNDI variable to Glassfish, it's only availble with InitialContext.doLookup("cas/serverName") though, not within the java:comp/env namespace. To get that, I had to add the following to my web.xml (it did not work in glassfish-web.xml!):
<resource-ref>
<res-ref-name>cas/serverName</res-ref-name>
<res-type>java.lang.String</res-type>
<lookup-name>cas/serverName</lookup-name>
</resource-ref>

Dependencies for Firebird, Jaybird and Hibernate

I was interested to see the performance of Firebird with Hibernate, but I can not manage to make it run correctly. I added to my pom.xml:
<dependency>
<groupId>net.sf.squirrel-sql.thirdparty-non-maven</groupId>
<artifactId>jaybird</artifactId>
<version>2.1.6</version>
</dependency>
When running it I keep getting:
java.lang.ClassNotFoundException: javax.resource.ResourceException
I tried adding all kinds of javax, javaee and others dependencies (via Maven), but I can't manage to run it. With PostgreSQL I have no issues and everything works as it is supposed to.
Running on Apache Tomcat 7.0.26.

The 'problem' is that Jaybird internally depends on the JavaEE concept of a resource-adapter and therefor requires some classes from JavaEE (specifically one that includes the javax.resource package (and subpackages). You need to include a JavaEE jar, or use
<groupId>org.firebirdsql.jdbc</groupId>
<artifactId>jaybird-jdk18</artifactId>
<version>3.0.5</version>
This one should automatically download the required dependency.
If all else fails, download the distribution from http://www.firebirdsql.org/en/jdbc-driver/ and use the connector-api-1.5.jar from the lib folder.
BTW: I hope to eliminate this dependency in Jaybird 5.
Disclaimer: I am one of the developers of Jaybird

We'll i was able to figure this out:
you can use hibernate's own connection pool
you can use commons-dbcp connection pool
you can use new tomcat7's jdbc connection pool.
Assuming you want to use 3, there are few steps you must perform, if you use firebird
Download jdk from : http://sourceforge.net/projects/firebird/files/firebird-jca-jdbc-driver/2.2.0-release-jdk16/Jaybird-2.2.0JDK_1.6.zip/download
Extract archive, copy jaybird*.jar and connector-api*.jar to /usr/share/tomcat7/lib.
Inside the connector-api jar, there is the missing class ResourceException.
WARNING: do not copy huge j2eeapi.jar instead, beacuse they contain offending classes to servlet-api.jar from tomcat
If you installed tomcat7 from tar, that's all. If you use ubuntu apt to install tomcat's package, then download original tar from tomcat's download side, extract it and copy tomcat-jdbc to wherever is you tomcat's lib folder (for ubuntu, that is /usr/share/tomcat7/lib)
That's all. Put the configuration into context.xml and that's all
<Resource
name="jdbc/SOME_NAME"
auth="Container"
type="javax.sql.DataSource"
factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
testWhileIdle="true"
testOnBorrow="true"
testOnReturn="false"
validationQuery="SELECT 'NOW' from RDB$DATABASE"
validationInterval="30000"
timeBetweenEvictionRunsMillis="30000"
maxActive="100"
minIdle="10"
maxWait="10000"
initialSize="10"
removeAbandonedTimeout="60"
removeAbandoned="true"
logAbandoned="true"
minEvictableIdleTimeMillis="30000"
jmxEnabled="true"
jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
username="sysdba"
password="masterke"
driverClassName="org.firebirdsql.jdbc.FBDriver"
url="jdbc:firebirdsql:IP:ALIAS?lc_ctype=UTF-8"
/>