OCI-01555 exception on calling OracleXmlType .Value method

Hi,
I'm using Oracle 10g EX, and ODAC 1020221. I created an ODP.net based C# webservice that reads/writes xml data using stored procedures.
I implemented the read as illustrated below:
OracleConnection connection = new OracleConnection(...);
OracleCommand command = connection.CreateCommand();
OracleParameter param = command.CreateParameter();
param.ParameterName = "XML_COL";
param.OracleDbType = OracleDbType.XmlType;
param.Direction = ParameterDirection.Output;
command.ExecuteNonQuery();
OracleParameter param = command.Parameters["XML_COL"];
OracleXmlType xmlType = (OracleXmlType)param.Value;
string value = xmlType.Value;
This works fine as long I call it in a single-threaded test.
However, when I run a multi-threaded test with more than 2 threads I'm getting the occasional exception on calling xmlType.Value:
OCI-01555: Message 1555 not found; product=RDBMS; facility=OCI
at Oracle.DataAccess.Client.OracleException.HandleErrorHelper(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, OpoSqlValCtx* pOpoSqlValCtx,
Object src, String procedure)
at Oracle.DataAccess.Client.OracleException.HandleError(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, Object src)
at Oracle.DataAccess.Types.OracleXmlType.HandleError(Int32 errCode, OracleConnection conn, IntPtr opsErrCtx, Object src)
at Oracle.DataAccess.Types.OracleXmlType.get_Value()
Surprisingly, I have not been able to find any documentation regarding this error, though there is a ORA error with the same number indicating some rollback size issues.
The problem seem to occur when another thread in my webservice updates the same record. The stored procedure is "safe-guarded" by a lock, however, I didn't implement additional locking in my webservice, because a) I thought odp.net can cope, and b) ado.net/sql has no problem with this approach, but perhaps I assumed wrongly?
Has anybody seen this exception before and can explain what this is all about?
Many thanks,
Frank
Edited by: 803211 on 19-Oct-2010 01:46

we meet exactly the same problem.
Did you fix it?

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</body>
</html>

It's actually quite simple:
Beans run server-side
Javascript runs client-side
So you will never be able to run server-side-code thru the client...

How to call a bean method through javascript?

Hi,
i want to call a bean method using the javascript.
thansk in advance.

hi
i want to call a backing bean method thought javscript on the button click.
i am inplementing addition of textbox at runtime.i wrote method and i am calling that on the button click.but the textbox is not created.
the code is bleow
public String doAction() {
     tryStuff1();
return "samplejsf";
public void tryStuff1()
System.out.println("Enter the trystuff method");
     FacesContext facesContext = FacesContext.getCurrentInstance();
UIViewRoot uIViewRoot = facesContext.getViewRoot();
Application application = facesContext.getApplication();
UIComponent formComp=uIViewRoot.findComponent("subbody:form1");
HtmlPanelGrid grid= new HtmlPanelGrid();
grid.setId("panelgrid2");
grid.setColumns(2);
grid.setBorder(2);
//UIComponent panelGridComp=formComp.findComponent("subbody:panelgrid1");
//UIComponent panelGroupComp=panelGridComp.findComponent("panelgroup2");
     HtmlOutputText output = new HtmlOutputText();
output.setValue("dynamic jsf text2");
System.out.println("hello output text2");
output.setRendered(true);
grid.getChildren().add(output);
HtmlInputText input = new HtmlInputText();
input.setSize(40);
input.setValueBinding("value", (ValueBinding) application.createValueBinding("#{sample.text2}"));
input.setRendered(true);
grid.getChildren().add(input);
System.out.println("hello output text1");
grid.setRendered(true);
formComp.getChildren().add(grid);
System.out.println("hello output text3:");
formComp.getRendersChildren();
formComp.setRendered(true);
public boolean getRendersChildren() {
     return true;
jsp code is
<h:form id="form1">
<h:panelGrid columns="2" binding="#{sample.formElements}">
</h:panelGrid>
<h:panelGrid id="panelgrid1" columns="1">
<h:panelGroup id="panelgroup1">
<h:outputText value="hardcoded jsf text1"/>
<h:inputText value="#{sample.text1}"/>
</h:panelGroup>
</h:panelGrid>
<h:commandButton id="add" action="#{sample.doAction}" value="add" type="SUBMIT"/>
</h:form>
when i click on the button its going into the method and diaplying s.o.p but the text box is not updated to the page.
why is it so.
i thought there may be a problem in calling the method directly thru button. i want to try thru javascript calling the bean method.
why is the page not updated.
can u help me out
thanks in advance
sree

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