Re: jbossts xa recovery
The problem was missing nodeIdentifier and xaRecoveryNode properties in section <properties depends="arjuna" name="jta"> in jbossts-properties.xml:
<property name="com.arjuna.ats.arjuna.xa.nodeIdentifier" value="app"/>
<property name="com.arjuna.ats.jta.xaRecoveryNode" value="app"/>
Now there is no error or exception.