javax naming NameNotFoundException Name is not bound in this Context Unable to find

Question

I m trying to find out why my web application throws a   javax naming NameNotFoundException  Name  flexeraDS  is not bound in this Context  Unable to find  flexeraDS     when a sister one from which I m copying the configuration quietly runs   I have    create from netbeans a new persistence by right clicking and selecting  new persistence   I don t care about the actual values I give but I just need for the persistence xml file to be created in the right directory  edited my context xml as below matching the one from working sister project edited my web xml to contain a resource DataSource as shown below edited my persistence xml as below again matching the same values which on the sister project work  added all libraries present in the other project inside the lib folder of mine and adding them also from NetBeans to be correctly put inside war    context xml   lt  xml version  1 0  encoding  UTF-8   gt   lt Context antiJARLocking  true  path   PetLogin  gt     lt ResourceLink global  ds flexeraDS  name  ds flexeraDS  type  javax sql DataSource   gt   lt  Context gt    web xml   lt  xml version  1 0  encoding  UTF-8   gt   lt web-app      gt   lt resource-ref gt           lt description gt DB Connection lt  description gt           lt res-ref-name gt ds flexeraDS lt  res-ref-name gt           lt res-type gt javax sql DataSource lt  res-type gt           lt res-auth gt Container lt  res-auth gt       lt  resource-ref gt   lt  web-app gt    persistence xml   lt  xml version  1 0  encoding  UTF-8   gt   lt persistence version  1 0               xmlns  http   java sun com xml ns persistence  xmlns xsi  http   www w3 org 2001 XMLSchema-instance               xsi schemaLocation  http   java sun com xml ns persistence http   java sun com xml ns persistence persistence 1 0 xsd   gt       lt persistence-unit name  flexerajpa  gt           lt provider gt org eclipse persistence jpa PersistenceProvider lt  provider gt           lt non-jta-data-source gt java  comp env ds flexeraDS lt  non-jta-data-source gt           lt properties gt                lt property name  eclipselink ddl-generation  value  create-tables    gt               lt property name  eclipselink ddl-generation output-mode                        value  database    gt               lt property name  eclipselink weaving  value  static    gt               lt property name  eclipselink logging level  value  WARNING    gt           lt  properties gt       lt  persistence-unit gt   lt  persistence gt    Now my syster project some-how manages to create its database folder inside apache-tomcat-7 0 40 bin exampleDB on startup while mine doesn t create it and throws an error as above   The code where the error is thrown is the first time I connect to the database   EntityManager entityManager   PersistenceProvider createEntityManager      where the PersistenceProvider class is   public final class PersistenceProvider        private static Map lt String  Object gt  lOptions   new HashMap lt String  Object gt          static               lOptions put PersistenceUnitProperties CACHE SHARED DEFAULT   false              private static EntityManagerFactory factory   Persistence              createEntityManagerFactory  flexerajpa   lOptions        private PersistenceProvider                                return             public static EntityManager createEntityManager                 return factory createEntityManager                           return             public static Metamodel getMetamodel                 return factory getMetamodel              I m out of possible reasons for this   if anyone has any suggestion  Thank you

User · Accepted Answer

Ok found out the Tomcat file server xml must be configured as well for the data source to work  So just add    lt Resource  auth  Container   driverClassName  org apache derby jdbc EmbeddedDriver   maxActive  20   maxIdle  10   maxWait  -1   name  ds flexeraDS   type  javax sql DataSource   url  jdbc derby flexeraDB create true       gt

javax.naming.NameNotFoundException: Name is not bound in this Context. Unable to find

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