Re: Intermitant DB Problem in tomcat:java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv in socket input stream read

[David Smith]

I've partially given it to you already.  I'm assuming for the purposes 
of this thread you have tomcat 5.5.x or tomcat 6.0.x and are using the 
tomcat provided database pooling.  Find the <Resource ... /> element in 
your webapp's context xml file where you defined your database pool and 
add an attribute named validationQuery with a value of "select 1".  Then 
restart your webapp.

--David
Thangavel Sankaranarayanan wrote:
Please help me in setting up a Validation Querry!!!
I am not aware of it!!

Regards,
Thangavel Sankaranarayanan



                                                                           
             David Smith                                                   
             <[EMAIL PROTECTED]                                             
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Two questions:

1. Is the db server on the same box as the tomcat server?  If not, have
you ruled out network hardware issues between the db server and tomcat?

2. Does your db pool definition have the attribute
validationQuery="select 1"?  That would pre-test your connections before
returning one on ds.getConnection(), regenerating them if they fail.

--David

Thangavel Sankaranarayanan wrote:
  
Hi ,

I am getting the following error when connecting to oracle database,

Has any one seen this kind of errors before? is this the problem with
tomcat in loosing the connections??
I am getting  this error once in 5 hrs and i get a HTTPStatus500 error
    
and
  
when a user tries again it gets okay and it is working
How can i resolve this Intermitant DB Problem in tomcat!!!

java.sql.SQLException: Io exception: Connection reset by peer: JVM_recv
    
in
  
socket input stream read

This is the Exception details in my application logs:
  DEBUG  au.com.vodafone.mpp.bos.MPPFactory  - Calling getConnection
    
method
  
of Datasrc Class:600991
  DEBUG  au.com.vodafone.mpp.da.DataSrc  - Inside getConnection() method
    
of
  
DataScr
 DEBUG  au.com.vodafone.mpp.da.DataSrc  - About to get a Connection from
SharedPoolDatasrc and return it back...
  ERROR  au.com.vodafone.mpp.da.DataSrc  - Exception while get a
    
Datasource
  
connection
 ERROR  au.com.vodafone.mpp.da.DataSrc  - java.sql.SQLException: Io
exception: Connection reset by peer: JVM_recv in socket input stream read
 DEBUG  au.com.vodafone.mpp.bos.MPPFactory  -
Exception:java.sql.SQLException: Io exception: Connection reset by peer:
JVM_recv in socket input stream read
 WARN   org.apache.struts.action.RequestProcessor  - Unhandled Exception
thrown: class java.sql.SQLException


This is my code:

static public Connection getConnection() throws Exception {
            theLog.debug("Inside getConnection() method of DataScr");
            try
            {

                  if (ds == null)
                  {
                        theLog.debug("SharedPoolDatasrc is NULL: Serious
Error ");
                        System.out.println("SERIOUS ERROR 99");
                  }
                  theLog.debug("About to get a Connection from
SharedPoolDatasrc and return it back...");
                  return ds.getConnection();
            }
            catch(Exception exp)
            {
                  theLog.error("Exception while get a Datasource
connection");
                  theLog.error(exp);
                  throw exp;
            }
      }



Regards,
Thangavel Sankaranarayanan



    

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