alguém sabe porque ta dando esse erro?
<blockquote>Out 22, 2012 12:21:04 AM org.hibernate.cfg.Environment
Informações: Hibernate 3.2.5
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Environment
Informações: hibernate.properties not found
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Environment buildBytecodeProvider
Informações: Bytecode provider name : cglib
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Environment
Informações: using JDK 1.4 java.sql.Timestamp handling
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Configuration configure
Informações: configuring from resource: /hibernate.cfg.xml
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Configuration getConfigurationInputStream
Informações: Configuration resource: /hibernate.cfg.xml
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Configuration addResource
Informações: Reading mappings from resource : Cliente.hbm.xml
Out 22, 2012 12:21:04 AM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
Informações: Mapping class: supermercado.uteis.classesPersistentes.Cliente -> Cliente
Out 22, 2012 12:21:04 AM org.hibernate.cfg.Configuration doConfigure
Informações: Configured SessionFactory: null
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Informações: Using Hibernate built-in connection pool (not for production use!)
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Informações: Hibernate connection pool size: 20
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Informações: autocommit mode: false
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Advertência: no JDBC Driver class was specified by property hibernate.connection.driver_class
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Informações: using driver: null at URL: jdbc:sqlserver://CESAR-4E3FFDD6F\SQLEXPRESS:1433;databaseName=supermercado
Out 22, 2012 12:21:04 AM org.hibernate.connection.DriverManagerConnectionProvider configure
Informações: connection properties: {class=com.microsoft.sqlserver.jdbc.SQLServerDriver}
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Advertência: Could not obtain connection metadata
com.microsoft.sqlserver.jdbc.SQLServerException: Falha de logon do usuário ‘’. O usuário não está associado a uma conexão confiável com o SQL Server.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(SQLServerException.java:197)
at com.microsoft.sqlserver.jdbc.TDSTokenHandler.onEOF(tdsparser.java:246)
at com.microsoft.sqlserver.jdbc.TDSParser.parse(tdsparser.java:83)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.sendLogon(SQLServerConnection.java:2529)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.logon(SQLServerConnection.java:1905)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.access$000(SQLServerConnection.java:41)
at com.microsoft.sqlserver.jdbc.SQLServerConnection$LogonCommand.doExecute(SQLServerConnection.java:1893)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:4575)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1400)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1045)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:817)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:700)
at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:842)
at java.sql.DriverManager.getConnection(DriverManager.java:579)
at java.sql.DriverManager.getConnection(DriverManager.java:190)
at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:110)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:84)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292)
at supermercado.uteis.TesteCliente.main(TesteCliente.java:14)
Out 22, 2012 12:21:18 AM org.hibernate.dialect.Dialect
Informações: Using dialect: org.hibernate.dialect.SQLServerDialect
Out 22, 2012 12:21:18 AM org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
Informações: Using default transaction strategy (direct JDBC transactions)
Out 22, 2012 12:21:18 AM org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
Informações: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Automatic flush during beforeCompletion(): disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Automatic session close at end of transaction: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Scrollable result sets: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: JDBC3 getGeneratedKeys(): disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Connection release mode: auto
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Default batch fetch size: 1
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Generate SQL with comments: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Order SQL updates by primary key: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Order SQL inserts for batching: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
Informações: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
Out 22, 2012 12:21:18 AM org.hibernate.hql.ast.ASTQueryTranslatorFactory
Informações: Using ASTQueryTranslatorFactory
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Query language substitutions: {}
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: JPA-QL strict compliance: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Second-level cache: enabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Query cache: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory createCacheProvider
Informações: Cache provider: org.hibernate.cache.NoCacheProvider
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Optimize cache for minimal puts: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Structured second-level cache entries: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Statistics: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Deleted entity synthetic identifier rollback: disabled
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Default entity-mode: pojo
Out 22, 2012 12:21:18 AM org.hibernate.cfg.SettingsFactory buildSettings
Informações: Named query checking : enabled
Out 22, 2012 12:21:18 AM org.hibernate.impl.SessionFactoryImpl
Informações: building session factory
Out 22, 2012 12:21:18 AM org.hibernate.impl.SessionFactoryObjectFactory addInstance
Informações: Not binding factory to JNDI, no JNDI name configured
Out 22, 2012 12:21:33 AM org.hibernate.util.JDBCExceptionReporter logExceptions
Advertência: SQL Error: 18452, SQLState: S0001
Out 22, 2012 12:21:33 AM org.hibernate.util.JDBCExceptionReporter logExceptions
Grave: Falha de logon do usuário ‘’. O usuário não está associado a uma conexão confiável com o SQL Server.
</blockquote>