If there is already a poaids.db file when orbd is started, it
is not possible to create additional persistentPOAs. It will
cause the following exception:

java.lang.NullPointerException
Unable to write POA Id Database!
org.omg.CORBA.INTERNAL: minor code: 1398082490 completed: No
        at com.sun.corba.ee.internal.Activation.POAIdMapImpl$POAIdDB.flush(POAIdMapImpl.java:215)
        at com.sun.corba.ee.internal.Activation.POAIdMapImpl.getId(POAIdMapImpl.java:127)
        at com.sun.corba.ee.internal.POA.POATable.addPersistentPOA(POATable.java:68)
        at com.sun.corba.ee.internal.POA.POATable.addPOA(POATable.java:36)
        at com.sun.corba.ee.internal.POA.POAImpl.initialize(POAImpl.java:97)
        at com.sun.corba.ee.internal.POA.POAImpl.<init>(POAImpl.java:88)
        at com.sun.corba.ee.internal.POA.POAImpl.create_POA(POAImpl.java:128)
        at com.sun.corba.ee.internal.POA.POAImpl.create_POA(POAImpl.java:376)
        at com.sun.jts.CosTransactions.DefaultTransactionService.createPOAs(DefaultTransactionService.java:350)
        at com.sun.jts.CosTransactions.DefaultTransactionService.identify_ORB(DefaultTransactionService.java:184)
        at com.sun.enterprise.iiop.poa.POAEJBORB.initTransactionService(POAEJBORB.java:306)
        at com.sun.enterprise.iiop.poa.POAProtocolMgr.initTransactionService(POAProtocolMgr.java:193)
        at com.sun.enterprise.iiop.J2EEServer.run(J2EEServer.java:203)
        at com.sun.enterprise.iiop.J2EEServer.main(J2EEServer.java:478)
org.omg.CORBA.INTERNAL: minor code: 265 completed: No
        at com.sun.jts.CosTransactions.DefaultTransactionService.identify_ORB(DefaultTransactionService.java:187)
        at com.sun.enterprise.iiop.poa.POAEJBORB.initTransactionService(POAEJBORB.java:306)
        at com.sun.enterprise.iiop.poa.POAProtocolMgr.initTransactionService(POAProtocolMgr.java:193)
        at com.sun.enterprise.iiop.J2EEServer.run(J2EEServer.java:203)
        at com.sun.enterprise.iiop.J2EEServer.main(J2EEServer.java:478)