Multiple ejbSelect methods with signatures like the following does not work.

OtherLocal ejbSelectOther(SomethingLocal ejb, Long id)
OtherLocal ejbSelectOther(SomethingLocal ejb, String name)

This is what happens:

SEVERE: Remote Exception
org.jboss.tm.JBossTransactionRolledbackException: Unexpected Error
java.lang.AbstractMethodError: com.xxx.ejb.ThingEJB.ejbSelectOther(Lcom/xxx/interfaces/ThingLocal;Ljava/lang/String;)Lcom/xxx/interfaces/OtherLocal;
at com.xxx.ejb.ThingEJB.selectOther(ThingEJB.java:500)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.jboss.invocation.Invocation.performCall(Invocation.java:345)
at org.jboss.ejb.EntityContainer$ContainerInterceptor.invoke(EntityContainer.java:1174)
at org.jboss.ejb.plugins.cmp.jdbc.JDBCRelationInterceptor.invoke(JDBCRelationInterceptor.java:72)
at org.jboss.ejb.plugins.EntitySynchronizationInterceptor.invoke(EntitySynchronizationInterceptor.java:273)
at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:185)
at org.jboss.ejb.plugins.EntityReentranceInterceptor.invoke(EntityReentranceInterceptor.java:111)
at org.jboss.ejb.plugins.EntityInstanceInterceptor.invoke(EntityInstanceInterceptor.java:242)
at org.jboss.ejb.plugins.EntityLockInterceptor.invoke(EntityLockInterceptor.java:89)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invoke(EntityCreationInterceptor.java:53)
at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:48)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:105)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:313)
at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:146)
at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:123)
at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)
at org.jboss.ejb.EntityContainer.internalInvoke(EntityContainer.java:514)
at org.jboss.ejb.Container.invoke(Container.java:870)
at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:413)
at org.jboss.ejb.plugins.local.EntityProxy.invoke(EntityProxy.java:44)
at $Proxy121.selectOther(Unknown Source)
[...]

Renaming the methods to something like the following works fine.

OtherLocal ejbSelectOtherById(SomethingLocal ejb, Long id)
OtherLocal ejbSelectOtherByName(SomethingLocal ejb, String name)