Supported Java EE 6 and 7 feature combinations
Some combinations of Java™ EE 7 and Java EE 6 Liberty features in a server configuration are compatible. However, many combinations are not compatible and cause an error when the server starts.
The error message resembles:
CWWKF0033E: The singleton features com.ibm.websphere.appserver.javaeeCompatible-6.0 and com.ibm.websphere.appserver.javaeeCompatible-7.0 cannot be loaded at the same time. The configured features servlet-3.0 and ejbLite-3.2 include one or more features that cause the conflict. Your configuration is not supported.
The following table marks compatible feature combinations with a checkmark (✔). Ensure that your server configuration does not contain incompatible features.
Java EE 6 features | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
beanValida- tion-1.0 | cdi-1.0 | ejbLite-3.1 | jaxb-2.2 | jaxrs-1.1 | jaxws-2.2 | jca-1.6 | jms-1.1 | jpa-2.0 | jsf-2.0 | jsp-2.2 | managed- Beans-1.0 | mdb-3.1 | servlet-3.0 | |
Java EE 7 features | ||||||||||||||
batch-1.0 | ✔ | ✔ | ✔ | ✔ | ||||||||||
beanValidation-1.1 | ✔ | ✔ | ✔ | ✔ | ||||||||||
cdi-1.2 | ✔ | ✔ | ✔ | ✔ | ||||||||||
concurrent-1.0 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
el-3.0 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
ejb-3.2 | ✔ | ✔ | ✔ | ✔ | ||||||||||
ejbLite-3.2 | ✔ | ✔ | ✔ | ✔ | ||||||||||
javaMail-1.5 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
jacc-1.5 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
jaspic1.1 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
jaxrs-2.0 | ✔ | ✔ | ✔ | ✔ | ||||||||||
jca-1.7 | ✔ | ✔ | ✔ | ✔ | ||||||||||
jms-2.0 | ✔ | ✔ | ✔ | ✔ | ||||||||||
jpa-2.1 | ✔ | ✔ | ✔ | |||||||||||
jsf-2.2 | ✔ | ✔ | ✔ | ✔ | ||||||||||
jsonp-1.0 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
jsp-2.3 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ||
mdb-3.2 | ✔ | ✔ | ✔ | ✔ | ||||||||||
servlet-3.1 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
websocket-1.0 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | |
websocket-1.1 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
The table shows that the servlet-3.0
feature of Java EE 6 is incompatible with
the websocket-1.1
feature of Java EE 7. Thus, a server configuration with the
following features causes an error:
<featureManager>
<feature>servlet-3.0</feature>
<feature>websocket-1.1</feature>
</featureManager>
To resolve the error, use servlet-3.1
instead of servlet-3.0
in
the server configuration. The servlet-3.1
feature is compatible with the
websocket-1.1
feature.
For more information on compatibility, or toleration, of features, see Tolerating features.