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Hi Friends

Help me in solving this error

Hibernate version: 3.0.3

Full stack trace of any exception that occurs:

SEVERE: An I/O error occured while sending to the backend.
org.hibernate.exception.JDBCConnectionException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.j
ava:66)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelp
er.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:1502)
at org.hibernate.loader.Loader.list(Loader.java:1482)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java
:111)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1246)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:299)
at com.vertical.accelere.VerticalWM.findInfo(VerticalWM.java:300)
at com.vertical.accelere.custsupp.CustSuppWM.find(CustSuppWM.java:149)
at org.apache.jsp.Inventory.CustSearchItem_jsp._jspService(CustSearchIte
m_jsp.java:73)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper
.java:324)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:2
92)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(Standard
ContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValv
eContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)

at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:16
0)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:683)
at java.lang.Thread.run(Thread.java:534)
Caused by: org.postgresql.util.PSQLException: An I/O error occured while sending
to the backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.ja
va:201)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Stat
ement.java:389)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(Abstract
Jdbc2Statement.java:330)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc
2Statement.java:240)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(Dele
gatingPreparedStatement.java:92)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:
107)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1183)
at org.hibernate.loader.Loader.doQuery(Loader.java:363)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Lo
ader.java:203)
at org.hibernate.loader.Loader.doList(Loader.java:1499)
... 37 more
Caused by: java.io.IOException: Stream closed
at sun.nio.cs.StreamEncoder.ensureOpen(StreamEncoder.java:38)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:151)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:213)
at org.postgresql.core.PGStream.flush(PGStream.java:493)
at org.postgresql.core.v3.QueryExecutorImpl.sendSync(QueryExecutorImpl.j
ava:631)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.ja
va:174)
... 46 more
Name and version of the database you are using:

PostgreSQL 8.0

The generated SQL (show_sql=true):
Hibernate: select this_.cs_code as cs1_0_, this_.eff_date as eff2_6_0_, this_.ty
pe as type6_0_, this_.name as name6_0_, this_.line_status as line5_6_0_, this_.r
ec_status as rec6_6_0_ from cust_supp_master this_ where (1=1)
08-May-2005 18:12:46 org.hibernate.util.JDBCExceptionReporter logExceptions
WARNING: SQL Error: 0, SQLState: 08006
08-May-2005 18:12:46 org.hibernate.util.JDBCExceptionReporter logExceptions
SEVERE: An I/O error occured while sending to the backend.



Regards
RamnathN

Not a Hibernate issue, check the connection.