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hibernate Exception

  Asked By: Steven    Date: Oct 17    Category: Java    Views: 1182
  

I writing a web project with MySql and Hibernate,

Waht is Exception?


org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:120)
org.hibernate.loader.Loader.getResultSet(Loader.java:1272)
org.hibernate.loader.Loader.doQuery(Loader.java:391)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:2\
18)
org.hibernate.loader.Loader.doList(Loader.java:1593)
org.hibernate.loader.Loader.list(Loader.java:1577)
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:111)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1322)
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:300)


java.sql.SQLException: Communication link failure:
java.io.EOFException, underlying cause: null



java.io.EOFException
com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java(Compiled Code))
com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1539)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1930)
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1168)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1279)
com.mysql.jdbc.Connection.execSQL(Connection.java:2281)
com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1634)
org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:120)
org.hibernate.loader.Loader.getResultSet(Loader.java:1272)
rg.hibernate.loader.Loader.doQuery(Loader.java:391)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:2\
18)
org.hibernate.loader.Loader.doList(Loader.java:1593)
org.hibernate.loader.Loader.list(Loader.java:1577)
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:111)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1322)
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:300)



com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:1714)
com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1930)
com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1168)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1279)
com.mysql.jdbc.Connection.execSQL(Connection.java:2281)
com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1634)
org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:120)
org.hibernate.loader.Loader.getResultSet(Loader.java:1272)
org.hibernate.loader.Loader.doQuery(Loader.java:391)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:2\
18)
org.hibernate.loader.Loader.doList(Loader.java:1593)
org.hibernate.loader.Loader.list(Loader.java:1577)
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:111)
org.hibernate.impl.SessionImpl.list(SessionImpl.java:1322)
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:300)


org.hibernate.exception.GenericJDBCException: could not execute query
org.hibernate.exception.ErrorCodeConverter.handledNonSpecificException(ErrorCode\
Converter.java(Inlined
Compiled Code))
org.hibernate.exception.ErrorCodeConverter.convert(ErrorCodeConverter.java(Compi\
led
Code))
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java(Inl\
ined
Compiled Code))
org.hibernate.loader.Loader.doList(Loader.java(Compiled Code))
org.hibernate.loader.Loader.list(Loader.java(Compiled Code))
org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java(Inlined
Compiled Code))
org.hibernate.impl.SessionImpl.list(SessionImpl.java(Compiled Code))
org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java(Compiled Code))

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2 Answers Found

 
Answer #1    Answered By: Cheryl Murphy     Answered On: Oct 17

there is some problem in your db connectivity.

look at this line :
java.sql.SQLExcepti on: Communication link  failure:

give me more detail about your problem.

 
Answer #2    Answered By: Adalricus Fischer     Answered On: Oct 17

I suggest you to create an account in http://forum.hibernate.org, surf the forum and in case you couldn't find the solution for your bug, ask your problem out there. I am sure you will find a more precise answer from hibernate  team.
Meanwhile please consider that there are useful considerations that you shall follow to ask a question in hibernate forum, if you expose your hibernate jar version, jdbc-driver-version.jar, application server name and version, hbm files, cfg.xml (or in case of a mixture with spring ,hibernate.properties & related beans) along with conditions that made you to face the problem, they will answer you.
It's a better approach as it's faster and you face other people's problems, styles and technics.

 
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