When the JDBC object store is used, if a connection is not available to the DS then the recovery manager thread can abort

This is because when we cannot obtain a connection we are throwing a FatalError that is not normally caught, I suggest we throw an ObjectStoreException that can be handled by the caller and the thread can proceed normally.

When this happens if someone tries to deregister between scans they will not be notified.

12:59:30,584 ERROR [stderr] (Periodic Recovery) Exception in thread "Periodic Recovery" com.arjuna.ats.arjuna.exceptions.FatalError: com.arjuna.ats.internal.arjuna.objectstore.jdbc.accessors.DataSourceJDBCAccess@721d5ac3 : javax.naming.NameNotFoundException: Error looking up datasources/jdbc-store, service service jboss.naming.context.java.jboss.datasources.jdbc-store is not started
12:59:30,585 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.objectstore.jdbc.accessors.DataSourceJDBCAccess.getConnection(DataSourceJDBCAccess.java:55)
12:59:30,586 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.objectstore.jdbc.JDBCImple_driver.allObjUids(JDBCImple_driver.java:316)
12:59:30,587 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.objectstore.jdbc.JDBCStore.allObjUids(JDBCStore.java:179)
12:59:30,587 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.objectstore.jdbc.JDBCStore.allObjUids(JDBCStore.java:119)
12:59:30,588 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.jta.recovery.arjunacore.XARecoveryModule.periodicWorkFirstPass(XARecoveryModule.java:152)
12:59:30,588 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.recovery.PeriodicRecovery.doWorkInternal(PeriodicRecovery.java:743)
12:59:30,589 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.recovery.PeriodicRecovery.run(PeriodicRecovery.java:371)
12:59:30,590 ERROR [stderr] (Periodic Recovery) Caused by: javax.naming.NameNotFoundException: Error looking up datasources/jdbc-store, service service jboss.naming.context.java.jboss.datasources.jdbc-store is not started
12:59:30,591 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.ServiceBasedNamingStore.lookup(ServiceBasedNamingStore.java:132)
12:59:30,591 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.ServiceBasedNamingStore.lookup(ServiceBasedNamingStore.java:80)
12:59:30,592 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:197)
12:59:30,592 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:174)
12:59:30,592 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.InitialContext.lookup(InitialContext.java:122)
12:59:30,593 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:183)
12:59:30,593 ERROR [stderr] (Periodic Recovery) at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:179)
12:59:30,593 ERROR [stderr] (Periodic Recovery) at javax.naming.InitialContext.lookup(InitialContext.java:411)
12:59:30,593 ERROR [stderr] (Periodic Recovery) at com.arjuna.ats.internal.arjuna.objectstore.jdbc.accessors.DataSourceJDBCAccess.getConnection(DataSourceJDBCAccess.java:53)
12:59:30,594 ERROR [stderr] (Periodic Recovery) ... 6 more