Ok. Do you hold on to your connections across requests or close them at
the end? If they are held, then it'd be a good idea to fire off a cheap
and easy "select 1" query before doing any work. If it throws an
exception, close it up and get another. If on the other hand these
connections are closed down at the end of each request, you should
probably look at your network hardware between tomcat and the db
server. Connection reset by peer can be caused by firewall hardware or
failing switches in addition to the db server.
--David
Thangavel Sankaranarayanan wrote:
David,Actually Resource element is used when we want to map a datascr to a
JNDI Resource and call from aoos.But in my case there is no JNDI naming of
datasource or database!!
all parameters are hard coded .
In that case wat can i do!!!
I have modified my code slightly to look like ths!!! will this be
helpfull???
catch(Exception exp)
{
theLog.error("Exception while getting a Datasource
connection..Trying again...");
theLog.error(exp);
int i=1;
do{
try{
return ds.getConnection();
}
catch(Exception e){
theLog.error("Try:"+i+"Exception while
getting a Datasource connection...");
theLog.error(e);
if(i==3)
throw e;
}
i++
}while(i<=3)
}
Regards,
Thangavel Sankaranarayanan
David Smith
<[EMAIL PROTECTED]
> To
Tomcat Users List
09/08/2008 11:51 <users@tomcat.apache.org>
PM cc
Subject
Please respond to Re: Intermitant DB Problem in
"Tomcat Users tomcat:java.sql.SQLException: Io
List" exception: Connection reset by
<[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org> stream read
Actually I believe tomcat 4.1 still predominantly used server.xml for
context definitions. Take a look in there for a <ResourceParams ...>
... </ResourceParams> element under your webapp's <Context ...> ...
</Context> element. I could be wrong about that -- it's been a *very*
long time since I've done anything with that version.
--David
Thangavel Sankaranarayanan wrote:
Hi David,
In my webapps directory ,i can find Conext.xml (nameof context.xml).in my
context.xml the following is defined..
where do i need to configure it ,David??
<Context path="/mpp" docBase="D:/projects/mpp/dealer/release071010"
debug="0" privileged="true">
<Realm className="au.com.workconsult.catalina.realm.NdsJNDIRealm"
debug="99"
connectionName="cn=Directory Manager"
connectionPassword="hadepyhkl"
connectionURL="ldap://vanja1234:389";
digest="SHA"
roleBase="ou=mpp,ou=Groups,dc=vodafone,dc=com,dc=au"
roleName="cn"
roleSearch="(uniquemember={0})"
roleSubtree="true"
userPassword="userPassword"
userPattern="uid={0},dc=abc,dc=com,dc=in"
/>
</Context>
Regards,
Thangavel Sankaranarayanan
David Smith
<[EMAIL PROTECTED]
>
To
Tomcat Users List
09/08/2008 10:44 <users@tomcat.apache.org>
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
"Tomcat Users tomcat:java.sql.SQLException: Io
List" exception: Connection reset by
<[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org> stream read
I think so. Tomcat 4.1.x relies on DBCP 1.0 whose docs aren't readily
available anymore. If you can find the source for DBCP 1.0, you could
take a look in the source code and get that answer. Or you could just
try it on your test system and see if it works. :-)
The manner the validation query is added to tomat's config is different
though. You add it in the ResourceParams element the same way other
properties are defined in your version.
--David
Thangavel Sankaranarayanan wrote:
Hi David,
Thanks !!!
Is the validationQuery applicable to tomacat 4.x.
I am using tomcat 4.x in windows2000
Regards,
Thangavel Sankaranarayanan
David Smith
<[EMAIL PROTECTED]
>
To
Tomcat Users List
09/08/2008 09:19 <users@tomcat.apache.org>
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
"Tomcat Users tomcat:java.sql.SQLException: Io
List" exception: Connection reset by
<[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org> stream read
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]
>
To
Tomcat Users List
09/08/2008 06:24 <users@tomcat.apache.org>
PM
cc
Subject
Please respond to Re: Intermitant DB Problem in
"Tomcat Users tomcat:java.sql.SQLException: Io
List" exception: Connection reset by
<[EMAIL PROTECTED] peer: JVM_recv in socket input
che.org> stream read
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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