Question

My web project was working perfectly, it includes: spring3 and hibernate3. After renaming some fields in eclipse by the help of eclipse refactoring, tomcat could’t start anymore. It hangs on these logs below:

    ......
    ......
    ......

2012-03-15 15:55:48,131 INFO [org.hibernate.connection.ConnectionProviderFactory] [newConnectionProvider] - <Initializing connection provider: org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider>
2012-03-15 15:55:53,763 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <RDBMS: MySQL, version: 5.0.77>
2012-03-15 15:55:53,778 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.15 ( Revision: ${bzr.revision-id} )>
2012-03-15 15:55:53,825 INFO [org.hibernate.dialect.Dialect] [<init>] - <Using dialect: org.hibernate.dialect.MySQLDialect>
2012-03-15 15:55:53,825 INFO [org.hibernate.transaction.TransactionFactoryFactory] [buildTransactionFactory] - <Transaction strategy: org.springframework.orm.hibernate3.SpringTransactionFactory>
2012-03-15 15:55:53,841 INFO [org.hibernate.transaction.TransactionManagerLookupFactory] [getTransactionManagerLookup] - <No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)>
2012-03-15 15:55:53,841 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Automatic flush during beforeCompletion(): disabled>
2012-03-15 15:55:53,841 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Automatic session close at end of transaction: disabled>
2012-03-15 15:55:53,841 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <JDBC batch size: 15>
2012-03-15 15:55:53,841 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <JDBC batch updates for versioned data: disabled>
2012-03-15 15:55:53,856 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Scrollable result sets: enabled>
2012-03-15 15:55:53,856 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <JDBC3 getGeneratedKeys(): enabled>
2012-03-15 15:55:53,856 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Connection release mode: auto>
2012-03-15 15:55:53,856 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Maximum outer join fetch depth: 2>
2012-03-15 15:55:53,872 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Default batch fetch size: 1>
2012-03-15 15:55:53,872 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Generate SQL with comments: disabled>
2012-03-15 15:55:53,872 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Order SQL updates by primary key: disabled>
2012-03-15 15:55:53,872 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Order SQL inserts for batching: disabled>
2012-03-15 15:55:53,872 INFO [org.hibernate.cfg.SettingsFactory] [createQueryTranslatorFactory] - <Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory>
2012-03-15 15:55:53,887 INFO [org.hibernate.hql.ast.ASTQueryTranslatorFactory] [<init>] - <Using ASTQueryTranslatorFactory>
2012-03-15 15:55:53,887 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Query language substitutions: {}>
2012-03-15 15:55:53,887 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <JPA-QL strict compliance: disabled>
2012-03-15 15:55:53,887 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Second-level cache: enabled>
2012-03-15 15:55:53,903 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Query cache: disabled>
2012-03-15 15:55:53,903 INFO [org.hibernate.cfg.SettingsFactory] [createRegionFactory] - <Cache region factory : org.hibernate.cache.impl.NoCachingRegionFactory>
2012-03-15 15:55:53,903 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Optimize cache for minimal puts: disabled>
2012-03-15 15:55:53,903 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Structured second-level cache entries: disabled>
2012-03-15 15:55:53,919 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Statistics: disabled>
2012-03-15 15:55:53,919 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Deleted entity synthetic identifier rollback: disabled>
2012-03-15 15:55:53,919 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Default entity-mode: pojo>
2012-03-15 15:55:53,919 INFO [org.hibernate.cfg.SettingsFactory] [buildSettings] - <Named query checking : enabled>
2012-03-15 15:55:54,090 INFO [org.hibernate.impl.SessionFactoryImpl] [<init>] - <building session factory>
2012-03-15 15:55:54,714 INFO [org.hibernate.impl.SessionFactoryObjectFactory] [addInstance] - <Not binding factory to JNDI, no JNDI name configured>
2012-03-15 15:55:54,933 INFO [org.springframework.orm.hibernate3.HibernateTransactionManager] [afterPropertiesSet] - <Using DataSource [org.apache.commons.dbcp.BasicDataSource@d99277] of Hibernate SessionFactory for HibernateTransactionManager>

Before refactoring the log continued like this below:

2012-02-29 07:52:39,822 INFO [org.springframework.ws.soap.saaj.SaajSoapMessageFactory] [afterPropertiesSet] - <Creating SAAJ 1.3 MessageFactory with SOAP 1.1 Protocol>
2012-02-29 07:52:39,853 INFO [org.springframework.oxm.jaxb.Jaxb2Marshaller] [createJaxbContextFromContextPath] - <Creating JAXBContext with context path [aheeva.webService.oxm]>
2012-02-29 07:52:40,571 INFO [org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping] [registerHandler] - <Mapped URL path [
.......
.......
.......

There are no errors anywhere strange!
Does Spring have any bugs? Why doesn’t it tell if the scans or any other processes are faulty, I can’t get it. Everything in Eclipse seems fine, nevertheless Tomcat hangs, this is really absurd!

Answer 1

To solve your problem take the following steps:

1. Take a look onto the script that eclipse generated when refactoring
   and compare the changes in the Fields.
2. Go down to the xml configuration files: spring, hibernate, castor,
   web,…etc and see if the compared fields are unchanged or
   overchanged and replace with the changes

If the above steps don’t help perform these steps:

1. Download a fresh version of your project from your repository and
   make sure to run to see if everything is ok with it
2. Perform again the same changes one at a time from your change
   script, and run your project each time to see if it runs normally
3. At the point where your project stops working, you will know on which
   concrete field-change tomcat started to hang, and get deep into it to
   tackle